first commit

2025-12-21 21:50:37 +08:00
commit 352698044b
30 changed files with 9893 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,31 @@
+# Node.js
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.env
+
+# Python
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+env/
+venv/
+pip-log.txt
+pip-delete-this-directory.txt
+.venv/
+.env/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# IDE
+.vscode/
+.idea/
+
+# Build
+dist/
+build/
--- a/README.md
+++ b/README.md
@@ -0,0 +1,15 @@
+# WebWork
+
+这是一个基于 Node.js 后端和原生 HTML/CSS/JS 前端的 Web 项目。
+
+## 项目结构
+
+- `backend/`: Node.js 服务端代码
+- `frontend/`: 前端静态资源
+- `database/`: 数据库初始化脚本
+
+## 快速开始
+
+1. 进入 `backend` 目录，运行 `npm install` 安装依赖。
+2. 配置 `.env` 文件（参考 `.env.example` 或根据需要创建）。
+3. 启动服务器：`npm start`。
--- a/backend/config/database.js
+++ b/backend/config/database.js
@@ -0,0 +1,64 @@
+const mysql = require('mysql2/promise');
+require('dotenv').config();
+
+const pool = mysql.createPool({
+  host: process.env.DB_HOST || 'localhost',
+  user: process.env.DB_USER || 'root',
+  password: process.env.DB_PASSWORD || '123456',
+  database: process.env.DB_NAME || 'score_management',
+  waitForConnections: true,
+  connectionLimit: 10,
+  queueLimit: 0
+});
+
+// 测试数据库连接
+async function testConnection() {
+  try {
+    const connection = await pool.getConnection();
+    console.log('数据库连接成功');
+    connection.release();
+    return true;
+  } catch (error) {
+    console.error('数据库连接失败:', error.message);
+    return false;
+  }
+}
+
+// 执行查询
+async function query(sql, params) {
+  try {
+    const [rows] = await pool.execute(sql, params);
+    return rows;
+  } catch (error) {
+    console.error('数据库查询错误:', error.message);
+    throw error;
+  }
+}
+
+// 执行事务
+async function executeTransaction(operations) {
+  const connection = await pool.getConnection();
+  try {
+    await connection.beginTransaction();
+    
+    for (const operation of operations) {
+      await connection.execute(operation.sql, operation.params);
+    }
+    
+    await connection.commit();
+    console.log('事务执行成功');
+  } catch (error) {
+    await connection.rollback();
+    console.error('事务执行失败:', error.message);
+    throw error;
+  } finally {
+    connection.release();
+  }
+}
+
+module.exports = {
+  pool,
+  query,
+  executeTransaction,
+  testConnection
+};
--- a/backend/middleware/auth.js
+++ b/backend/middleware/auth.js
@@ -0,0 +1,170 @@
+const db = require('../config/database');
+
+/**
+ * 认证中间件 - 检查用户是否已登录
+ */
+const requireAuth = (req, res, next) => {
+    if (!req.session.user) {
+        return res.status(401).json({ 
+            success: false, 
+            message: '请先登录' 
+        });
+    }
+    next();
+};
+
+/**
+ * 角色权限中间件 - 检查用户是否具有指定角色
+ * @param {Array} allowedRoles - 允许的角色数组
+ */
+const requireRole = (allowedRoles) => {
+    return (req, res, next) => {
+        if (!req.session.user) {
+            return res.status(401).json({ 
+                success: false, 
+                message: '请先登录' 
+            });
+        }
+        
+        const userRole = req.session.user.role;
+        
+        if (!allowedRoles.includes(userRole)) {
+            return res.status(403).json({ 
+                success: false, 
+                message: '权限不足' 
+            });
+        }
+        
+        next();
+    };
+};
+
+/**
+ * 获取当前用户ID
+ */
+const getCurrentUserId = (req) => {
+    return req.session.user ? req.session.user.id : null;
+};
+
+/**
+ * 获取当前用户角色
+ */
+const getCurrentUserRole = (req) => {
+    return req.session.user ? req.session.user.role : null;
+};
+
+/**
+ * 检查是否是自己的数据（学生只能访问自己的数据）
+ */
+const checkOwnership = async (req, res, next) => {
+    try {
+        const userId = getCurrentUserId(req);
+        const userRole = getCurrentUserRole(req);
+        
+        // 管理员和教师可以访问所有数据
+        if (userRole === 'admin' || userRole === 'teacher') {
+            return next();
+        }
+        
+        // 学生只能访问自己的数据
+        if (userRole === 'student') {
+            const studentId = req.params.studentId || req.body.studentId;
+            
+            // 检查学生ID是否属于当前用户
+            const [students] = await db.execute(
+                'SELECT id FROM students WHERE user_id = ?',
+                [userId]
+            );
+            
+            if (students.length === 0) {
+                return res.status(403).json({ 
+                    success: false, 
+                    message: '未找到学生信息' 
+                });
+            }
+            
+            const userStudentId = students[0].id;
+            
+            // 如果请求中没有指定学生ID，默认使用当前用户的学生ID
+            if (!studentId) {
+                req.studentId = userStudentId;
+                return next();
+            }
+            
+            // 检查请求的学生ID是否与当前用户的学生ID匹配
+            if (parseInt(studentId) !== userStudentId) {
+                return res.status(403).json({ 
+                    success: false, 
+                    message: '无权访问其他学生的数据' 
+                });
+            }
+            
+            req.studentId = userStudentId;
+            return next();
+        }
+        
+        // 其他角色无权访问
+        return res.status(403).json({ 
+            success: false, 
+            message: '权限不足' 
+        });
+        
+    } catch (error) {
+        console.error('所有权检查错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+};
+
+/**
+ * 输入验证中间件
+ */
+const validateInput = (schema) => {
+    return (req, res, next) => {
+        const { error } = schema.validate(req.body);
+        if (error) {
+            return res.status(400).json({ 
+                success: false, 
+                message: error.details[0].message 
+            });
+        }
+        next();
+    };
+};
+
+/**
+ * 日志记录中间件
+ */
+const logOperation = (operation) => {
+    return async (req, res, next) => {
+        try {
+            const userId = getCurrentUserId(req);
+            const userRole = getCurrentUserRole(req);
+            const ip = req.ip || req.connection.remoteAddress;
+            
+            // 记录操作日志
+            await db.execute(
+                'INSERT INTO operation_logs (user_id, operation, ip_address, user_role) VALUES (?, ?, ?, ?)',
+                [userId, operation, ip, userRole]
+            );
+            
+            next();
+        } catch (error) {
+            console.error('日志记录错误:', error);
+            // 日志记录失败不影响主要操作
+            next();
+        }
+    };
+};
+
+module.exports = {
+    requireAuth,
+    requireRole,
+    getCurrentUserId,
+    getCurrentUserRole,
+    checkOwnership,
+    validateInput,
+    logOperation
+};
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
--- a/backend/package.json
+++ b/backend/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "grade-management-system",
+  "version": "1.0.0",
+  "description": "学生成绩管理系统后端",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "nodemon server.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "cors": "^2.8.5",
+    "express-session": "^1.17.3",
+    "express-mysql-session": "^3.0.0",
+    "mysql2": "^3.6.0",
+    "bcryptjs": "^2.4.3",
+    "dotenv": "^16.3.1",
+    "body-parser": "^1.20.2"
+  },
+  "devDependencies": {
+    "nodemon": "^3.0.1"
+  },
+  "engines": {
+    "node": ">=14.0.0"
+  }
+}
--- a/backend/routes/admin.js
+++ b/backend/routes/admin.js
@@ -0,0 +1,311 @@
+const express = require('express');
+const router = express.Router();
+const db = require('../config/database');
+const { requireAuth, requireRole } = require('../middleware/auth');
+
+/**
+ * 获取所有用户
+ */
+router.get('/users', requireAuth, requireRole(['admin']), async (req, res) => {
+    try {
+        const { page = 1, limit = 10, search = '', role = '' } = req.query;
+        const offset = (page - 1) * limit;
+        
+        let query = 'SELECT id, name, role, class, created_at FROM users WHERE 1=1';
+        let params = [];
+        
+        if (search) {
+            query += ' AND (id LIKE ? OR name LIKE ? OR class LIKE ?)';
+            const searchTerm = `%${search}%`;
+            params.push(searchTerm, searchTerm, searchTerm);
+        }
+        
+        if (role) {
+            query += ' AND role = ?';
+            params.push(role);
+        }
+        
+        // 获取总数
+        const countQuery = query.replace('SELECT id, name, role, class, created_at', 'SELECT COUNT(*) as total');
+        const countResult = await db.pool.execute(countQuery, params);
+        const total = countResult[0][0].total;
+        
+        // 获取分页数据
+        query += ' ORDER BY created_at DESC LIMIT ? OFFSET ?';
+        params.push(parseInt(limit), parseInt(offset));
+        
+        const users = await db.pool.execute(query, params);
+        
+        res.json({
+            success: true,
+            data: users,
+            pagination: {
+                page: parseInt(page),
+                limit: parseInt(limit),
+                total,
+                pages: Math.ceil(total / limit)
+            }
+        });
+        
+    } catch (error) {
+        console.error('获取用户列表错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+/**
+ * 创建用户
+ */
+router.post('/users', requireAuth, requireRole(['admin']), async (req, res) => {
+    try {
+        const { id, name, password, role, className } = req.body;
+        
+        // 输入验证
+        if (!id || !name || !password || !role) {
+            return res.status(400).json({ 
+                success: false, 
+                message: '请填写所有必填字段' 
+            });
+        }
+        
+        // 检查用户ID是否存在
+        const existingUsers = await db.pool.execute(
+            'SELECT id FROM users WHERE id = ?',
+            [id]
+        );
+        
+        if (existingUsers[0].length > 0) {
+            return res.status(400).json({ 
+                success: false, 
+                message: '用户ID已存在' 
+            });
+        }
+        
+        // 哈希密码
+        const bcrypt = require('bcrypt');
+        const salt = await bcrypt.genSalt(10);
+        const passwordHash = await bcrypt.hash(password, salt);
+        
+        // 创建用户
+        const result = await db.pool.execute(
+            'INSERT INTO users (id, name, password, role, class) VALUES (?, ?, ?, ?, ?)',
+            [id, name, passwordHash, role, className || null]
+        );
+        
+        const userId = result[0].insertId;
+        
+        // 根据角色创建相关记录
+        if (role === 'student') {
+            const studentId = 'STU' + Date.now().toString().slice(-6);
+            await db.pool.execute(
+                'INSERT INTO students (user_id, student_id, full_name, class_name) VALUES (?, ?, ?, ?)',
+                [userId, studentId, fullName, className || '未分配班级']
+            );
+        } else if (role === 'teacher') {
+            await db.pool.execute(
+                'INSERT INTO teachers (user_id, full_name) VALUES (?, ?)',
+                [userId, fullName]
+            );
+        }
+        
+        res.json({
+            success: true,
+            message: '用户创建成功',
+            userId
+        });
+        
+    } catch (error) {
+        console.error('创建用户错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+/**
+ * 更新用户
+ */
+router.put('/users/:id', requireAuth, requireRole(['admin']), async (req, res) => {
+    try {
+        const userId = req.params.id;
+        const { name, role, className } = req.body;
+        
+        // 检查用户是否存在
+        const users = await db.pool.execute(
+            'SELECT * FROM users WHERE id = ?',
+            [userId]
+        );
+        
+        if (users[0].length === 0) {
+            return res.status(404).json({ 
+                success: false, 
+                message: '用户不存在' 
+            });
+        }
+        
+        const oldRole = users[0][0].role;
+        
+        // 更新用户信息
+        await db.pool.execute(
+            'UPDATE users SET name = ?, role = ?, class = ? WHERE id = ?',
+            [name, role, className || null, userId]
+        );
+        
+        // 如果角色改变，更新相关记录
+        if (oldRole !== role) {
+            // 删除旧角色的记录
+            if (oldRole === 'student') {
+                await db.pool.execute('DELETE FROM students WHERE user_id = ?', [userId]);
+            } else if (oldRole === 'teacher') {
+                await db.pool.execute('DELETE FROM teachers WHERE user_id = ?', [userId]);
+            }
+            
+            // 创建新角色的记录
+            if (role === 'student') {
+                await db.pool.execute(
+                    'INSERT INTO students (user_id, class) VALUES (?, ?)',
+                    [userId, className || null]
+                );
+            } else if (role === 'teacher') {
+                // 教师不需要额外表
+            }
+        } else if (role === 'student' && className) {
+            // 如果是学生且班级有变化，更新班级
+            await db.pool.execute(
+                'UPDATE students SET class = ? WHERE user_id = ?',
+                [className, userId]
+            );
+        }
+        
+        res.json({
+            success: true,
+            message: '用户更新成功'
+        });
+        
+    } catch (error) {
+        console.error('更新用户错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+/**
+ * 删除用户
+ */
+router.delete('/users/:id', requireAuth, requireRole(['admin']), async (req, res) => {
+    try {
+        const userId = req.params.id;
+        
+        // 检查用户是否存在
+        const users = await db.pool.execute(
+            'SELECT role FROM users WHERE id = ?',
+            [userId]
+        );
+        
+        if (users[0].length === 0) {
+            return res.status(404).json({ 
+                success: false, 
+                message: '用户不存在' 
+            });
+        }
+        
+        const userRole = users[0][0].role;
+        
+        // 删除相关记录
+        if (userRole === 'student') {
+            await db.pool.execute('DELETE FROM students WHERE user_id = ?', [userId]);
+        } else if (userRole === 'teacher') {
+            await db.pool.execute('DELETE FROM teachers WHERE user_id = ?', [userId]);
+        }
+        
+        // 删除用户
+        await db.pool.execute('DELETE FROM users WHERE id = ?', [userId]);
+        
+        res.json({
+            success: true,
+            message: '用户删除成功'
+        });
+        
+    } catch (error) {
+        console.error('删除用户错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+/**
+ * 获取所有班级
+ */
+router.get('/classes', requireAuth, requireRole(['admin']), async (req, res) => {
+    try {
+        const classes = await db.pool.execute(
+            'SELECT DISTINCT class_name FROM students ORDER BY class_name'
+        );
+        
+        res.json({
+            success: true,
+            data: classes
+        });
+        
+    } catch (error) {
+        console.error('获取班级列表错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+/**
+ * 获取统计数据
+ */
+router.get('/stats', requireAuth, requireRole(['admin']), async (req, res) => {
+    try {
+        // 用户统计
+        const userStats = await db.pool.execute(
+            'SELECT role, COUNT(*) as count FROM users GROUP BY role'
+        );
+        
+        // 班级统计
+        const classStats = await db.pool.execute(
+            'SELECT class_name, COUNT(*) as count FROM students GROUP BY class_name'
+        );
+        
+        // 课程统计
+        const courseStats = await db.pool.execute(
+            'SELECT COUNT(*) as total_courses FROM courses'
+        );
+        
+        // 成绩统计
+        const gradeStats = await db.pool.execute(
+            'SELECT COUNT(*) as total_grades FROM scores'
+        );
+        
+        res.json({
+            success: true,
+            data: {
+                users: userStats[0],
+                classes: classStats[0],
+                total_courses: courseStats[0][0].total_courses,
+                total_grades: gradeStats[0][0].total_grades
+            }
+        });
+        
+    } catch (error) {
+        console.error('获取统计数据错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+module.exports = router;
--- a/backend/routes/auth.js
+++ b/backend/routes/auth.js
@@ -0,0 +1,175 @@
+const express = require('express');
+const bcrypt = require('bcryptjs');
+const router = express.Router();
+const db = require('../config/database');
+
+// 登录
+router.post('/login', async (req, res) => {
+    try {
+        const { id, password, role } = req.body;
+        
+        // 输入验证
+        if (!id || !password || !role) {
+            return res.status(400).json({ 
+                success: false, 
+                message: '请输入完整的登录信息' 
+            });
+        }
+        
+        // 查询用户
+        const users = await db.query(
+            'SELECT * FROM users WHERE id = ? AND role = ?',
+            [id, role]
+        );
+        
+        if (users.length === 0) {
+            return res.status(401).json({ 
+                success: false, 
+                message: '用户名或密码错误' 
+            });
+        }
+        
+        const user = users[0];
+        
+        // 验证密码
+        const isValidPassword = await bcrypt.compare(password, user.password);
+        if (!isValidPassword) {
+            return res.status(401).json({ 
+                success: false, 
+                message: '用户名或密码错误' 
+            });
+        }
+        
+        // 设置会话
+        req.session.user = {
+            id: user.id,
+            name: user.name,
+            role: user.role,
+            class: user.class
+        };
+        
+        // 如果是学生，获取学生信息
+        if (user.role === 'student') {
+            const [students] = await db.pool.execute(
+                'SELECT * FROM students WHERE id = ?',
+                [user.id]
+            );
+            if (students[0].length > 0) {
+                req.session.user.studentInfo = students[0][0];
+            }
+        }
+        
+        res.json({
+            success: true,
+            message: '登录成功',
+            user: req.session.user
+        });
+        
+    } catch (error) {
+        console.error('登录错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+// 注册
+router.post('/register', async (req, res) => {
+    try {
+        const { id, name, password, role, class: userClass } = req.body;
+        
+        // 输入验证
+        if (!id || !name || !password || !role) {
+            return res.status(400).json({ 
+                success: false, 
+                message: '请填写所有必填字段（ID、姓名、密码、角色）' 
+            });
+        }
+        
+        // 学生和教师需要班级字段，管理员不需要
+        if ((role === 'student' || role === 'teacher') && !userClass) {
+            return res.status(400).json({ 
+                success: false, 
+                message: '学生和教师需要填写班级' 
+            });
+        }
+        
+        // 检查用户ID是否存在
+        const existingUsers = await db.query(
+            'SELECT id FROM users WHERE id = ?',
+            [id]
+        );
+        
+        if (existingUsers.length > 0) {
+            return res.status(400).json({ 
+                success: false, 
+                message: '用户ID已存在' 
+            });
+        }
+        
+        // 哈希密码
+        const salt = await bcrypt.genSalt(10);
+        const passwordHash = await bcrypt.hash(password, salt);
+        
+        // 创建用户
+        await db.pool.execute(
+            'INSERT INTO users (id, name, password, role, class) VALUES (?, ?, ?, ?, ?)',
+            [id, name, passwordHash, role, userClass || null]
+        );
+        
+        // 如果是学生，创建学生记录
+        if (role === 'student') {
+            await db.pool.execute(
+                'INSERT INTO students (id, name, class) VALUES (?, ?, ?)',
+                [id, name, userClass]
+            );
+        }
+        
+        res.json({
+            success: true,
+            message: '注册成功'
+        });
+        
+    } catch (error) {
+        console.error('注册错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+// 注销
+router.post('/logout', (req, res) => {
+    req.session.destroy(err => {
+        if (err) {
+            return res.status(500).json({ 
+                success: false, 
+                message: '注销失败' 
+            });
+        }
+        res.clearCookie('session_cookie');
+        res.json({ 
+            success: true, 
+            message: '注销成功' 
+        });
+    });
+});
+
+// 获取当前用户信息
+router.get('/me', (req, res) => {
+    if (!req.session.user) {
+        return res.status(401).json({ 
+            success: false, 
+            message: '未登录' 
+        });
+    }
+    
+    res.json({
+        success: true,
+        user: req.session.user
+    });
+});
+
+module.exports = router;
--- a/backend/routes/student.js
+++ b/backend/routes/student.js
@@ -0,0 +1,143 @@
+const express = require('express');
+const router = express.Router();
+const db = require('../config/database');
+const { requireAuth, requireRole } = require('../middleware/auth');
+
+// 获取学生成绩
+router.get('/grades', requireAuth, requireRole(['student']), async (req, res) => {
+    try {
+        const userId = req.session.user.id;
+        
+        // 获取学生信息
+        const students = await db.pool.execute(
+            'SELECT id FROM students WHERE user_id = ?',
+            [userId]
+        );
+        
+        if (students[0].length === 0) {
+            return res.status(404).json({ 
+                success: false, 
+                message: '学生信息不存在' 
+            });
+        }
+        
+        const studentId = students[0][0].id;
+        
+        // 获取成绩信息
+        const grades = await db.pool.execute(`
+            SELECT s.*, c.course_code, c.course_name, c.credit,
+                   u.name as teacher_name
+            FROM scores s
+            JOIN courses c ON s.course_id = c.id
+            JOIN users u ON s.teacher_id = u.id
+            WHERE s.student_id = ?
+            ORDER BY s.exam_date DESC
+        `, [studentId]);
+        
+        // 计算统计信息
+        let totalCredits = 0;
+        let totalGradePoints = 0;
+        let totalCourses = grades.length;
+        
+        grades.forEach(grade => {
+            totalCredits += parseFloat(grade.credit);
+            if (grade.grade_point) {
+                totalGradePoints += parseFloat(grade.grade_point) * parseFloat(grade.credit);
+            }
+        });
+        
+        const gpa = totalCredits > 0 ? (totalGradePoints / totalCredits).toFixed(2) : 0;
+        
+        res.json({
+            success: true,
+            grades,
+            statistics: {
+                totalCourses,
+                totalCredits,
+                gpa,
+                averageScore: totalCourses > 0 ? 
+                    (grades.reduce((sum, g) => sum + parseFloat(g.score || 0), 0) / totalCourses).toFixed(1) : 0
+            }
+        });
+        
+    } catch (error) {
+        console.error('获取成绩错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+// 获取成绩详情
+router.get('/grades/:id', requireAuth, requireRole(['student']), async (req, res) => {
+    try {
+        const gradeId = req.params.id;
+        const userId = req.session.user.id;
+        
+        const grades = await db.pool.execute(`
+            SELECT s.*, c.course_code, c.course_name, c.credit, c.semester,
+                   u.full_name as teacher_name, u.email as teacher_email,
+                   st.student_id as student_number, st.class_name, st.major
+            FROM scores s
+            JOIN courses c ON s.course_id = c.id
+            JOIN users u ON s.teacher_id = u.id
+            JOIN students st ON s.student_id = st.id
+            WHERE s.id = ? AND st.user_id = ?
+        `, [gradeId, userId]);
+        
+        if (grades[0].length === 0) {
+            return res.status(404).json({ 
+                success: false, 
+                message: '成绩不存在' 
+            });
+        }
+        
+        res.json({
+            success: true,
+            grade: grades[0]
+        });
+        
+    } catch (error) {
+        console.error('获取成绩详情错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+// 获取学生个人信息
+router.get('/profile', requireAuth, requireRole(['student']), async (req, res) => {
+    try {
+        const userId = req.session.user.id;
+        
+        const students = await db.pool.execute(`
+            SELECT s.*, u.username, u.email, u.created_at as account_created
+            FROM students s
+            JOIN users u ON s.user_id = u.id
+            WHERE u.id = ?
+        `, [userId]);
+        
+        if (students[0].length === 0) {
+            return res.status(404).json({ 
+                success: false, 
+                message: '学生信息不存在' 
+            });
+        }
+        
+        res.json({
+            success: true,
+            profile: students[0]
+        });
+        
+    } catch (error) {
+        console.error('获取个人信息错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+module.exports = router;
--- a/backend/routes/teacher.js
+++ b/backend/routes/teacher.js
@@ -0,0 +1,243 @@
+const express = require('express');
+const router = express.Router();
+const db = require('../config/database');
+const { requireAuth, requireRole } = require('../middleware/auth');
+
+// 获取教师教授的课程
+router.get('/courses', requireAuth, requireRole(['teacher']), async (req, res) => {
+    try {
+        const teacherId = req.session.user.id;
+        
+        const courses = await db.pool.execute(
+            'SELECT * FROM courses WHERE teacher_id = ? ORDER BY course_code',
+            [teacherId]
+        );
+        
+        res.json({
+            success: true,
+            courses
+        });
+        
+    } catch (error) {
+        console.error('获取课程错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+// 录入成绩
+router.post('/grades', requireAuth, requireRole(['teacher']), async (req, res) => {
+    try {
+        const teacherId = req.session.user.id;
+        const { studentId, courseId, score, examDate, remark } = req.body;
+        
+        // 验证输入
+        if (!studentId || !courseId || score === undefined) {
+            return res.status(400).json({ 
+                success: false, 
+                message: '请填写必填字段' 
+            });
+        }
+        
+        // 检查学生和课程是否存在
+        const students = await db.pool.execute(
+            'SELECT id FROM students WHERE student_id = ?',
+            [studentId]
+        );
+        
+        if (students[0].length === 0) {
+            return res.status(404).json({ 
+                success: false, 
+                message: '学生不存在' 
+            });
+        }
+        
+        // 计算绩点和等级
+        const numericScore = parseFloat(score);
+        let gradePoint = 0;
+        let gradeLevel = 'F';
+        
+        if (numericScore >= 90) {
+            gradePoint = 4.0; gradeLevel = 'A';
+        } else if (numericScore >= 80) {
+            gradePoint = 3.0; gradeLevel = 'B';
+        } else if (numericScore >= 70) {
+            gradePoint = 2.0; gradeLevel = 'C';
+        } else if (numericScore >= 60) {
+            gradePoint = 1.0; gradeLevel = 'D';
+        }
+        
+        // 插入成绩
+        const result = await db.pool.execute(
+            `INSERT INTO scores (student_id, course_id, teacher_id, score, 
+             grade_point, grade_level, exam_date, remark) 
+             VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+            [students[0][0].id, courseId, teacherId, numericScore, 
+             gradePoint, gradeLevel, examDate, remark]
+        );
+        
+        res.json({
+            success: true,
+            message: '成绩录入成功',
+            gradeId: result.insertId
+        });
+        
+    } catch (error) {
+        console.error('录入成绩错误:', error);
+        
+        // 处理唯一约束错误
+        if (error.code === 'ER_DUP_ENTRY') {
+            return res.status(400).json({ 
+                success: false, 
+                message: '该学生此课程成绩已存在' 
+            });
+        }
+        
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+// 查询成绩（按班级、课程）
+router.get('/grades', requireAuth, requireRole(['teacher']), async (req, res) => {
+    try {
+        const { class_name, course_id } = req.query;
+        const teacherId = req.session.user.id;
+        
+        let query = `
+            SELECT sc.*, st.student_id, st.full_name, st.class_name,
+                   c.course_code, c.course_name, c.credit
+            FROM scores sc
+            JOIN students st ON sc.student_id = st.id
+            JOIN courses c ON sc.course_id = c.id
+            WHERE sc.teacher_id = ?
+        `;
+        
+        const params = [teacherId];
+        
+        if (class_name) {
+            query += ' AND st.class_name = ?';
+            params.push(class_name);
+        }
+        
+        if (course_id) {
+            query += ' AND sc.course_id = ?';
+            params.push(course_id);
+        }
+        
+        query += ' ORDER BY st.class_name, st.student_id, sc.exam_date DESC';
+        
+        const grades = await db.pool.execute(query, params);
+        
+        res.json({
+            success: true,
+            grades
+        });
+        
+    } catch (error) {
+        console.error('查询成绩错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+// 更新成绩
+router.put('/grades/:id', requireAuth, requireRole(['teacher']), async (req, res) => {
+    try {
+        const gradeId = req.params.id;
+        const teacherId = req.session.user.id;
+        const { score, examDate, remark } = req.body;
+        
+        // 验证成绩是否存在且属于该教师
+        const existingGrades = await db.pool.execute(
+            'SELECT id FROM scores WHERE id = ? AND teacher_id = ?',
+            [gradeId, teacherId]
+        );
+        
+        if (existingGrades[0].length === 0) {
+            return res.status(404).json({ 
+                success: false, 
+                message: '成绩不存在或无权修改' 
+            });
+        }
+        
+        // 计算新的绩点和等级
+        const numericScore = parseFloat(score);
+        let gradePoint = 0;
+        let gradeLevel = 'F';
+        
+        if (numericScore >= 90) {
+            gradePoint = 4.0; gradeLevel = 'A';
+        } else if (numericScore >= 80) {
+            gradePoint = 3.0; gradeLevel = 'B';
+        } else if (numericScore >= 70) {
+            gradePoint = 2.0; gradeLevel = 'C';
+        } else if (numericScore >= 60) {
+            gradePoint = 1.0; gradeLevel = 'D';
+        }
+        
+        // 更新成绩
+        await db.pool.execute(
+            `UPDATE scores SET score = ?, grade_point = ?, grade_level = ?, 
+             exam_date = ?, remark = ?, updated_at = CURRENT_TIMESTAMP 
+             WHERE id = ?`,
+            [numericScore, gradePoint, gradeLevel, examDate, remark, gradeId]
+        );
+        
+        res.json({
+            success: true,
+            message: '成绩更新成功'
+        });
+        
+    } catch (error) {
+        console.error('更新成绩错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+// 删除成绩
+router.delete('/grades/:id', requireAuth, requireRole(['teacher']), async (req, res) => {
+    try {
+        const gradeId = req.params.id;
+        const teacherId = req.session.user.id;
+        
+        // 验证成绩是否存在且属于该教师
+        const existingGrades = await db.pool.execute(
+            'SELECT id FROM scores WHERE id = ? AND teacher_id = ?',
+            [gradeId, teacherId]
+        );
+        
+        if (existingGrades[0].length === 0) {
+            return res.status(404).json({ 
+                success: false, 
+                message: '成绩不存在或无权删除' 
+            });
+        }
+        
+        // 删除成绩
+        await db.pool.execute('DELETE FROM scores WHERE id = ?', [gradeId]);
+        
+        res.json({
+            success: true,
+            message: '成绩删除成功'
+        });
+        
+    } catch (error) {
+        console.error('删除成绩错误:', error);
+        res.status(500).json({ 
+            success: false, 
+            message: '服务器错误' 
+        });
+    }
+});
+
+module.exports = router;
--- a/backend/server.js
+++ b/backend/server.js
@@ -0,0 +1,128 @@
+const express = require('express');
+const cors = require('cors');
+const session = require('express-session');
+const MySQLStore = require('express-mysql-session')(session);
+const path = require('path');
+require('dotenv').config();
+
+// 导入路由
+const authRoutes = require('./routes/auth');
+const studentRoutes = require('./routes/student');
+const teacherRoutes = require('./routes/teacher');
+const adminRoutes = require('./routes/admin');
+
+// 数据库配置
+const db = require('./config/database');
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+// 中间件
+app.use(cors({
+    origin: 'http://localhost:3000',
+    credentials: true
+}));
+app.use(express.json());
+app.use(express.urlencoded({ extended: true }));
+
+// 会话配置
+const sessionStore = new MySQLStore({
+    expiration: 86400000, // 1天
+    createDatabaseTable: true,
+    schema: {
+        tableName: 'sessions',
+        columnNames: {
+            session_id: 'session_id',
+            expires: 'expires',
+            data: 'data'
+        }
+    }
+}, db.pool);
+
+app.use(session({
+    key: 'session_cookie',
+    secret: process.env.SESSION_SECRET || 'your-secret-key',
+    store: sessionStore,
+    resave: false,
+    saveUninitialized: false,
+    cookie: {
+        maxAge: 86400000,
+        httpOnly: true,
+        secure: process.env.NODE_ENV === 'production'
+    }
+}));
+
+// 静态文件服务
+app.use(express.static(path.join(__dirname, '../frontend')));
+
+// 重定向旧路径 /frontend/html/* 到 /html/*
+app.get('/frontend/html/*', (req, res) => {
+    const path = req.params[0];
+    res.redirect(`/html/${path}`);
+});
+
+// 路由
+app.use('/api/auth', authRoutes);
+app.use('/api/student', studentRoutes);
+app.use('/api/teacher', teacherRoutes);
+app.use('/api/admin', adminRoutes);
+
+// 认证中间件
+const { requireAuth, requireRole } = require('./middleware/auth');
+
+// 页面路由
+app.get('/', (req, res) => {
+    res.sendFile(path.join(__dirname, '../frontend/html/login.html'));
+});
+
+app.get('/dashboard', requireAuth, (req, res) => {
+    // 根据用户角色重定向到不同的仪表板
+    const role = req.session.user?.role;
+    
+    switch (role) {
+        case 'student':
+            res.redirect('/html/student_dashboard.html');
+            break;
+        case 'teacher':
+            res.redirect('/html/teacher_dashboard.html');
+            break;
+        case 'admin':
+            res.redirect('/html/admin_dashboard.html');
+            break;
+        default:
+            // 如果没有角色信息，重定向到登录页面
+            res.redirect('/');
+            break;
+    }
+});
+
+// 学生页面路由
+app.get('/student/*', requireAuth, requireRole(['student', 'admin', 'teacher']), (req, res, next) => {
+    next();
+});
+
+// 教师页面路由
+app.get('/teacher/*', requireAuth, requireRole(['teacher', 'admin']), (req, res, next) => {
+    next();
+});
+
+// 管理员页面路由
+app.get('/admin/*', requireAuth, requireRole(['admin']), (req, res, next) => {
+    next();
+});
+
+// 404处理
+app.use((req, res) => {
+    res.status(404).json({ error: 'Not found' });
+});
+
+// 错误处理
+app.use((err, req, res, next) => {
+    console.error(err.stack);
+    res.status(500).json({ error: 'Internal server error' });
+});
+
+app.listen(PORT, () => {
+    console.log(`Server running on port ${PORT}`);
+    console.log(`访问地址: http://localhost:${PORT}`);
+});
--- a/database/init.sql
+++ b/database/init.sql
@@ -0,0 +1,214 @@
+-- 学生成绩管理系统数据库初始化脚本
+-- 创建数据库
+CREATE DATABASE IF NOT EXISTS score_management DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+USE score_management;
+
+-- 用户表（学生、教师、管理员）
+CREATE TABLE IF NOT EXISTS users (
+    id VARCHAR(20) PRIMARY KEY COMMENT '用户ID（学号/工号）',
+    name VARCHAR(50) NOT NULL COMMENT '姓名',
+    password VARCHAR(100) NOT NULL COMMENT '密码（bcrypt加密）',
+    role ENUM('student', 'teacher', 'admin') NOT NULL COMMENT '角色',
+    class VARCHAR(20) DEFAULT NULL COMMENT '班级（学生和教师需要，管理员为NULL）',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+    INDEX idx_role (role),
+    INDEX idx_class (class)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户表';
+
+-- students 表：学生详细信息（与 users 表 id 关联）
+CREATE TABLE IF NOT EXISTS students (
+    id VARCHAR(20) PRIMARY KEY COMMENT '学生ID（与users表id一致）',
+    name VARCHAR(50) NOT NULL COMMENT '姓名',
+    class VARCHAR(20) COMMENT '班级',
+    FOREIGN KEY (id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='学生详细信息表';
+
+-- scores 表：成绩记录
+CREATE TABLE IF NOT EXISTS scores (
+    id INT AUTO_INCREMENT PRIMARY KEY COMMENT '成绩记录ID',
+    student_id VARCHAR(20) NOT NULL COMMENT '学生ID',
+    course VARCHAR(100) NOT NULL COMMENT '课程名称',
+    score DECIMAL(5,2) NOT NULL CHECK (score >= 0 AND score <= 100) COMMENT '成绩',
+    teacher_id VARCHAR(20) NOT NULL COMMENT '教师ID',
+    class VARCHAR(20) NOT NULL COMMENT '班级',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    FOREIGN KEY (student_id) REFERENCES users(id) ON DELETE CASCADE,
+    FOREIGN KEY (teacher_id) REFERENCES users(id) ON DELETE CASCADE,
+    INDEX idx_student_id (student_id),
+    INDEX idx_teacher_id (teacher_id),
+    INDEX idx_class (class)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='成绩记录表';
+
+-- 班级表
+CREATE TABLE IF NOT EXISTS classes (
+    id INT PRIMARY KEY AUTO_INCREMENT COMMENT '班级ID',
+    class_name VARCHAR(50) NOT NULL COMMENT '班级名称',
+    grade VARCHAR(20) COMMENT '年级',
+    major VARCHAR(100) COMMENT '专业',
+    teacher_id INT COMMENT '班主任ID',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+    INDEX idx_class_name (class_name),
+    INDEX idx_teacher_id (teacher_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='班级表';
+
+-- 课程表
+CREATE TABLE IF NOT EXISTS courses (
+    id INT PRIMARY KEY AUTO_INCREMENT COMMENT '课程ID',
+    course_code VARCHAR(20) UNIQUE NOT NULL COMMENT '课程代码',
+    course_name VARCHAR(100) NOT NULL COMMENT '课程名称',
+    credit DECIMAL(3,1) NOT NULL DEFAULT 2.0 COMMENT '学分',
+    teacher_id INT NOT NULL COMMENT '授课教师ID',
+    class_id INT NOT NULL COMMENT '授课班级ID',
+    semester VARCHAR(20) COMMENT '学期',
+    academic_year VARCHAR(20) COMMENT '学年',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+    INDEX idx_course_code (course_code),
+    INDEX idx_teacher_id (teacher_id),
+    INDEX idx_class_id (class_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='课程表';
+
+-- 成绩表
+CREATE TABLE IF NOT EXISTS grades (
+    id INT PRIMARY KEY AUTO_INCREMENT COMMENT '成绩ID',
+    student_id INT NOT NULL COMMENT '学生ID',
+    course_id INT NOT NULL COMMENT '课程ID',
+    usual_score DECIMAL(5,2) COMMENT '平时成绩',
+    midterm_score DECIMAL(5,2) COMMENT '期中成绩',
+    final_score DECIMAL(5,2) COMMENT '期末成绩',
+    total_score DECIMAL(5,2) COMMENT '总评成绩',
+    grade_point DECIMAL(3,2) COMMENT '绩点',
+    grade_level VARCHAR(10) COMMENT '成绩等级（A/B/C/D/F）',
+    teacher_id INT NOT NULL COMMENT '录入教师ID',
+    remark TEXT COMMENT '备注',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+    UNIQUE KEY uk_student_course (student_id, course_id),
+    INDEX idx_student_id (student_id),
+    INDEX idx_course_id (course_id),
+    INDEX idx_teacher_id (teacher_id),
+    INDEX idx_total_score (total_score)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='成绩表';
+
+-- 操作日志表
+CREATE TABLE IF NOT EXISTS operation_logs (
+    id INT PRIMARY KEY AUTO_INCREMENT COMMENT '日志ID',
+    user_id INT NOT NULL COMMENT '操作用户ID',
+    operation_type VARCHAR(50) NOT NULL COMMENT '操作类型',
+    operation_target VARCHAR(100) COMMENT '操作目标',
+    operation_details TEXT COMMENT '操作详情',
+    ip_address VARCHAR(45) COMMENT 'IP地址',
+    user_agent TEXT COMMENT '用户代理',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '操作时间',
+    INDEX idx_user_id (user_id),
+    INDEX idx_operation_type (operation_type),
+    INDEX idx_created_at (created_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='操作日志表';
+
+-- 插入初始数据
+-- 插入管理员用户（密码：admin123）
+INSERT INTO users (username, password, name, role, email, phone) VALUES 
+('admin', '$2b$10$N9qo8uLOickgx2ZMRZoMy.MrqK.3.6Z1zXjJX.3Q7JzQ7JzQ7JzQ7', '系统管理员', 'admin', 'admin@school.edu', '13800138000');
+
+-- 插入示例班级
+INSERT INTO classes (class_name, grade, major) VALUES 
+('计算机科学与技术2023级1班', '2023', '计算机科学与技术'),
+('软件工程2023级1班', '2023', '软件工程'),
+('人工智能2023级1班', '2023', '人工智能');
+
+-- 插入示例教师（密码：teacher123）
+INSERT INTO users (username, password, name, role, class_id, email, phone) VALUES 
+('t1001', '$2b$10$N9qo8uLOickgx2ZMRZoMy.MrqK.3.6Z1zXjJX.3Q7JzQ7JzQ7JzQ7', '张老师', 'teacher', 1, 'zhang@school.edu', '13800138001'),
+('t1002', '$2b$10$N9qo8uLOickgx2ZMRZoMy.MrqK.3.6Z1zXjJX.3Q7JzQ7JzQ7JzQ7', '李老师', 'teacher', 2, 'li@school.edu', '13800138002');
+
+-- 插入示例学生（密码：student123）
+INSERT INTO users (username, password, name, role, class_id, email, phone) VALUES 
+('s2023001', '$2b$10$N9qo8uLOickgx2ZMRZoMy.MrqK.3.6Z1zXjJX.3Q7JzQ7JzQ7JzQ7', '张三', 'student', 1, 'zhangsan@school.edu', '13800138111'),
+('s2023002', '$2b$10$N9qo8uLOickgx2ZMRZoMy.MrqK.3.6Z1zXjJX.3Q7JzQ7JzQ7JzQ7', '李四', 'student', 1, 'lisi@school.edu', '13800138112'),
+('s2023003', '$2b$10$N9qo8uLOickgx2ZMRZoMy.MrqK.3.6Z1zXjJX.3Q7JzQ7JzQ7JzQ7', '王五', 'student', 2, 'wangwu@school.edu', '13800138113');
+
+-- 插入示例课程
+INSERT INTO courses (course_code, course_name, credit, teacher_id, class_id, semester, academic_year) VALUES 
+('CS101', '计算机基础', 3.0, 2, 1, '2023-2024-1', '2023-2024'),
+('CS201', '数据结构', 4.0, 2, 1, '2023-2024-1', '2023-2024'),
+('SE101', '软件工程导论', 3.0, 3, 2, '2023-2024-1', '2023-2024'),
+('AI101', '人工智能基础', 3.5, 3, 3, '2023-2024-1', '2023-2024');
+
+-- 插入示例成绩
+INSERT INTO grades (student_id, course_id, usual_score, midterm_score, final_score, total_score, grade_point, grade_level, teacher_id) VALUES 
+(3, 1, 85.00, 78.00, 82.00, 81.50, 3.2, 'B', 2),
+(3, 2, 90.00, 85.00, 88.00, 87.50, 3.7, 'A', 2),
+(4, 1, 78.00, 82.00, 80.00, 80.50, 3.0, 'B', 2),
+(5, 3, 88.00, 85.00, 90.00, 88.50, 3.8, 'A', 3);
+
+-- 更新班级表的班主任信息
+UPDATE classes SET teacher_id = 2 WHERE id = 1;
+UPDATE classes SET teacher_id = 3 WHERE id = 2;
+
+-- 创建视图：学生成绩详情视图
+CREATE OR REPLACE VIEW student_grade_details AS
+SELECT 
+    g.id,
+    g.student_id,
+    u1.name AS student_name,
+    u1.username AS student_no,
+    g.course_id,
+    c.course_code,
+    c.course_name,
+    c.credit,
+    g.usual_score,
+    g.midterm_score,
+    g.final_score,
+    g.total_score,
+    g.grade_point,
+    g.grade_level,
+    g.teacher_id,
+    u2.name AS teacher_name,
+    g.remark,
+    g.created_at,
+    g.updated_at
+FROM grades g
+JOIN users u1 ON g.student_id = u1.id
+JOIN courses c ON g.course_id = c.id
+JOIN users u2 ON g.teacher_id = u2.id;
+
+-- 创建视图：班级成绩统计视图
+CREATE OR REPLACE VIEW class_grade_statistics AS
+SELECT 
+    cl.id AS class_id,
+    cl.class_name,
+    c.id AS course_id,
+    c.course_code,
+    c.course_name,
+    COUNT(g.id) AS student_count,
+    AVG(g.total_score) AS avg_score,
+    MAX(g.total_score) AS max_score,
+    MIN(g.total_score) AS min_score,
+    SUM(CASE WHEN g.grade_level = 'A' THEN 1 ELSE 0 END) AS a_count,
+    SUM(CASE WHEN g.grade_level = 'B' THEN 1 ELSE 0 END) AS b_count,
+    SUM(CASE WHEN g.grade_level = 'C' THEN 1 ELSE 0 END) AS c_count,
+    SUM(CASE WHEN g.grade_level = 'D' THEN 1 ELSE 0 END) AS d_count,
+    SUM(CASE WHEN g.grade_level = 'F' THEN 1 ELSE 0 END) AS f_count
+FROM classes cl
+JOIN courses c ON cl.id = c.class_id
+LEFT JOIN grades g ON c.id = g.course_id
+GROUP BY cl.id, c.id;
+
+-- 显示表结构信息
+SHOW TABLES;
+
+-- 显示各表记录数
+SELECT 'users' AS table_name, COUNT(*) AS record_count FROM users
+UNION ALL
+SELECT 'classes', COUNT(*) FROM classes
+UNION ALL
+SELECT 'courses', COUNT(*) FROM courses
+UNION ALL
+SELECT 'grades', COUNT(*) FROM grades
+UNION ALL
+SELECT 'operation_logs', COUNT(*) FROM operation_logs;
+
+-- 显示视图
+SHOW FULL TABLES WHERE TABLE_TYPE = 'VIEW';
--- a/database/score_management.sql
+++ b/database/score_management.sql
@@ -0,0 +1,213 @@
+/*
+ Navicat Premium Dump SQL
+
+ Source Server         : test
+ Source Server Type    : MySQL
+ Source Server Version : 80042 (8.0.42)
+ Source Host           : localhost:3306
+ Source Schema         : score_management
+
+ Target Server Type    : MySQL
+ Target Server Version : 80042 (8.0.42)
+ File Encoding         : 65001
+
+ Date: 21/12/2025 21:37:55
+*/
+
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- ----------------------------
+-- Table structure for classes
+-- ----------------------------
+DROP TABLE IF EXISTS `classes`;
+CREATE TABLE `classes`  (
+  `id` int NOT NULL AUTO_INCREMENT COMMENT '班级ID',
+  `class_name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '班级名称',
+  `grade` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '年级',
+  `major` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '专业',
+  `teacher_id` int NULL DEFAULT NULL COMMENT '班主任ID',
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  INDEX `idx_class_name`(`class_name` ASC) USING BTREE,
+  INDEX `idx_teacher_id`(`teacher_id` ASC) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '班级表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of classes
+-- ----------------------------
+
+-- ----------------------------
+-- Table structure for courses
+-- ----------------------------
+DROP TABLE IF EXISTS `courses`;
+CREATE TABLE `courses`  (
+  `id` int NOT NULL AUTO_INCREMENT COMMENT '课程ID',
+  `course_code` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '课程代码',
+  `course_name` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '课程名称',
+  `credit` decimal(3, 1) NOT NULL DEFAULT 2.0 COMMENT '学分',
+  `teacher_id` int NOT NULL COMMENT '授课教师ID',
+  `class_id` int NOT NULL COMMENT '授课班级ID',
+  `semester` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '学期',
+  `academic_year` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '学年',
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  UNIQUE INDEX `course_code`(`course_code` ASC) USING BTREE,
+  INDEX `idx_course_code`(`course_code` ASC) USING BTREE,
+  INDEX `idx_teacher_id`(`teacher_id` ASC) USING BTREE,
+  INDEX `idx_class_id`(`class_id` ASC) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '课程表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of courses
+-- ----------------------------
+
+-- ----------------------------
+-- Table structure for grades
+-- ----------------------------
+DROP TABLE IF EXISTS `grades`;
+CREATE TABLE `grades`  (
+  `id` int NOT NULL AUTO_INCREMENT COMMENT '成绩ID',
+  `student_id` int NOT NULL COMMENT '学生ID',
+  `course_id` int NOT NULL COMMENT '课程ID',
+  `usual_score` decimal(5, 2) NULL DEFAULT NULL COMMENT '平时成绩',
+  `midterm_score` decimal(5, 2) NULL DEFAULT NULL COMMENT '期中成绩',
+  `final_score` decimal(5, 2) NULL DEFAULT NULL COMMENT '期末成绩',
+  `total_score` decimal(5, 2) NULL DEFAULT NULL COMMENT '总评成绩',
+  `grade_point` decimal(3, 2) NULL DEFAULT NULL COMMENT '绩点',
+  `grade_level` varchar(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '成绩等级（A/B/C/D/F）',
+  `teacher_id` int NOT NULL COMMENT '录入教师ID',
+  `remark` text CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL COMMENT '备注',
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  UNIQUE INDEX `uk_student_course`(`student_id` ASC, `course_id` ASC) USING BTREE,
+  INDEX `idx_student_id`(`student_id` ASC) USING BTREE,
+  INDEX `idx_course_id`(`course_id` ASC) USING BTREE,
+  INDEX `idx_teacher_id`(`teacher_id` ASC) USING BTREE,
+  INDEX `idx_total_score`(`total_score` ASC) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '成绩表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of grades
+-- ----------------------------
+
+-- ----------------------------
+-- Table structure for operation_logs
+-- ----------------------------
+DROP TABLE IF EXISTS `operation_logs`;
+CREATE TABLE `operation_logs`  (
+  `id` int NOT NULL AUTO_INCREMENT COMMENT '日志ID',
+  `user_id` int NOT NULL COMMENT '操作用户ID',
+  `operation_type` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '操作类型',
+  `operation_target` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '操作目标',
+  `operation_details` text CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL COMMENT '操作详情',
+  `ip_address` varchar(45) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT 'IP地址',
+  `user_agent` text CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL COMMENT '用户代理',
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '操作时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  INDEX `idx_user_id`(`user_id` ASC) USING BTREE,
+  INDEX `idx_operation_type`(`operation_type` ASC) USING BTREE,
+  INDEX `idx_created_at`(`created_at` ASC) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '操作日志表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of operation_logs
+-- ----------------------------
+
+-- ----------------------------
+-- Table structure for scores
+-- ----------------------------
+DROP TABLE IF EXISTS `scores`;
+CREATE TABLE `scores`  (
+  `id` int NOT NULL AUTO_INCREMENT COMMENT '成绩记录ID',
+  `student_id` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '学生ID',
+  `course` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '课程名称',
+  `score` decimal(5, 2) NOT NULL COMMENT '成绩',
+  `teacher_id` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '教师ID',
+  `class` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '班级',
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  INDEX `idx_student_id`(`student_id` ASC) USING BTREE,
+  INDEX `idx_teacher_id`(`teacher_id` ASC) USING BTREE,
+  INDEX `idx_class`(`class` ASC) USING BTREE,
+  CONSTRAINT `scores_ibfk_1` FOREIGN KEY (`student_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE RESTRICT,
+  CONSTRAINT `scores_ibfk_2` FOREIGN KEY (`teacher_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE RESTRICT,
+  CONSTRAINT `scores_chk_1` CHECK ((`score` >= 0) and (`score` <= 100))
+) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '成绩记录表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of scores
+-- ----------------------------
+
+-- ----------------------------
+-- Table structure for sessions
+-- ----------------------------
+DROP TABLE IF EXISTS `sessions`;
+CREATE TABLE `sessions`  (
+  `session_id` varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL,
+  `expires` int UNSIGNED NOT NULL,
+  `data` mediumtext CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NULL,
+  PRIMARY KEY (`session_id`) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of sessions
+-- ----------------------------
+INSERT INTO `sessions` VALUES ('KY6QaavAiws7rkdEBFIFDoHefl2bxzlI', 1766334525, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-21T16:28:44.650Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"teststudent\",\"name\":\"????\",\"role\":\"student\",\"class\":\"2023?1?\"}}');
+INSERT INTO `sessions` VALUES ('KaDFs4HogLmkjS0HAs6qki6g2FmE3sTL', 1766334465, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-21T16:27:45.314Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"teststudent\",\"name\":\"????\",\"role\":\"student\",\"class\":\"2023?1?\"}}');
+INSERT INTO `sessions` VALUES ('QAhXDQ1FOlhU6RhaFOm3ghRtLOW4hBTd', 1766334812, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-21T16:33:31.987Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"teststudent\",\"name\":\"????\",\"role\":\"student\",\"class\":\"2023?1?\"}}');
+INSERT INTO `sessions` VALUES ('SAuQyktAI9gAHpXbjARpe-9BL42pDRiV', 1766334764, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-21T16:32:43.695Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"teststudent\",\"name\":\"????\",\"role\":\"student\",\"class\":\"2023?1?\"}}');
+INSERT INTO `sessions` VALUES ('XduN1lYhGPeIaLTHbLTNVnTCBtKUCkJR', 1766334689, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-21T16:31:28.994Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"teststudent\",\"name\":\"????\",\"role\":\"student\",\"class\":\"2023?1?\"}}');
+INSERT INTO `sessions` VALUES ('Y59PFvvqK7M0DKZshc6ONTmFQjzGyMmV', 1766334426, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-21T16:27:05.673Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"teststudent\",\"name\":\"????\",\"role\":\"student\",\"class\":\"2023?1?\"}}');
+INSERT INTO `sessions` VALUES ('rlscT2Pi2EAyLXHs1CNXyQmNSiW8vEo4', 1766334271, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-21T16:24:30.682Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"teststudent\",\"name\":\"????\",\"role\":\"student\",\"class\":\"2023?1?\"}}');
+INSERT INTO `sessions` VALUES ('rsaOCJRjYQLPtUWlDmUFJgWcCYZbOCgJ', 1766410574, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-21T15:54:39.935Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"123\",\"name\":\"经济局\",\"role\":\"student\",\"class\":\"123\"}}');
+INSERT INTO `sessions` VALUES ('wXxRpNTGY0wqLaHsebSAsw1I6Pb7Ed6w', 1766410584, '{\"cookie\":{\"originalMaxAge\":86400000,\"expires\":\"2025-12-22T13:35:43.191Z\",\"secure\":false,\"httpOnly\":true,\"path\":\"/\"},\"user\":{\"id\":\"567\",\"name\":\"急急急\",\"role\":\"teacher\",\"class\":\"567\"}}');
+
+-- ----------------------------
+-- Table structure for students
+-- ----------------------------
+DROP TABLE IF EXISTS `students`;
+CREATE TABLE `students`  (
+  `id` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '学生ID（与users表id一致）',
+  `name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '姓名',
+  `class` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '班级',
+  PRIMARY KEY (`id`) USING BTREE,
+  CONSTRAINT `students_ibfk_1` FOREIGN KEY (`id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE RESTRICT
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '学生详细信息表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of students
+-- ----------------------------
+INSERT INTO `students` VALUES ('123', '经济局', '123');
+INSERT INTO `students` VALUES ('test123', '????', '????');
+INSERT INTO `students` VALUES ('teststudent', '????', '2023?1?');
+
+-- ----------------------------
+-- Table structure for users
+-- ----------------------------
+DROP TABLE IF EXISTS `users`;
+CREATE TABLE `users`  (
+  `id` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '用户ID（学号/工号）',
+  `name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '姓名',
+  `password` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '密码（bcrypt加密）',
+  `role` enum('student','teacher','admin') CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '角色',
+  `class` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '班级（学生和教师需要，管理员为NULL）',
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  INDEX `idx_role`(`role` ASC) USING BTREE,
+  INDEX `idx_class`(`class` ASC) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '用户表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of users
+-- ----------------------------
+INSERT INTO `users` VALUES ('123', '经济局', '$2a$10$l0NwrM2fNGgPdqDFqXEGx.UfqOIp8womtWN8/omq1fK15zII7b4Nm', 'student', '123', '2025-12-20 22:47:59', '2025-12-20 22:47:59');
+INSERT INTO `users` VALUES ('567', '急急急', '$2a$10$27a0L4fC0rLjK4.Kpq0CceK1cD4O0cW6XTxwvs4eIcYpKnpvEQdVG', 'teacher', '567', '2025-12-21 20:36:17', '2025-12-21 20:36:17');
+INSERT INTO `users` VALUES ('test123', '????', '$2a$10$61WfURr1uI1e71EWwWXOlOUamTR1/AzH2Kb.6bZKVttdmWGk7V366', 'student', '????', '2025-12-20 23:49:32', '2025-12-20 23:49:32');
+INSERT INTO `users` VALUES ('teststudent', '????', '$2a$10$PfNB72GBDBmu8DLcTLptW.4clzmk9qsjjlxfAMZvAJD8B.QUoXXAK', 'student', '2023?1?', '2025-12-21 00:24:16', '2025-12-21 00:24:16');
+
+SET FOREIGN_KEY_CHECKS = 1;
--- a/frontend/css/main.css
+++ b/frontend/css/main.css
@@ -0,0 +1,215 @@
+/* 首页通用交互样式 */
+
+/* 滚动时导航栏样式 */
+.navbar-scrolled {
+    background-color: rgba(255, 255, 255, 0.95) !important;
+    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+    backdrop-filter: blur(10px);
+}
+
+.navbar-scrolled .navbar-brand,
+.navbar-scrolled .nav-link {
+    color: #333 !important;
+}
+
+.navbar-scrolled .navbar-toggler-icon {
+    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0, 0, 0, 0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
+}
+
+/* 滚动动画效果 */
+.feature-card, .hero-content {
+    opacity: 0;
+    transform: translateY(20px);
+    transition: opacity 0.6s ease, transform 0.6s ease;
+}
+
+.feature-card.animate-in,
+.hero-content.animate-in {
+    opacity: 1;
+    transform: translateY(0);
+}
+
+/* 返回顶部按钮 */
+#backToTop {
+    position: fixed;
+    bottom: 30px;
+    right: 30px;
+    width: 50px;
+    height: 50px;
+    background-color: #4e73df;
+    color: white;
+    border: none;
+    border-radius: 50%;
+    cursor: pointer;
+    opacity: 0;
+    visibility: hidden;
+    transition: all 0.3s ease;
+    z-index: 1000;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 1.2rem;
+    box-shadow: 0 4px 15px rgba(78, 115, 223, 0.3);
+}
+
+#backToTop:hover {
+    background-color: #2e59d9;
+    transform: translateY(-3px);
+    box-shadow: 0 6px 20px rgba(78, 115, 223, 0.4);
+}
+
+#backToTop.show {
+    opacity: 1;
+    visibility: visible;
+}
+
+/* 通知样式 */
+.notification {
+    position: fixed;
+    top: 20px;
+    right: 20px;
+    padding: 15px 20px;
+    border-radius: 8px;
+    background-color: white;
+    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
+    z-index: 9999;
+    opacity: 0;
+    transform: translateX(100%);
+    transition: opacity 0.3s ease, transform 0.3s ease;
+    max-width: 350px;
+    display: flex;
+    align-items: center;
+}
+
+.notification.show {
+    opacity: 1;
+    transform: translateX(0);
+}
+
+.notification-content {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+}
+
+.notification i {
+    font-size: 1.2rem;
+}
+
+.notification-success {
+    border-left: 4px solid #1cc88a;
+}
+
+.notification-success i {
+    color: #1cc88a;
+}
+
+.notification-error {
+    border-left: 4px solid #e74a3b;
+}
+
+.notification-error i {
+    color: #e74a3b;
+}
+
+.notification-info {
+    border-left: 4px solid #36b9cc;
+}
+
+.notification-info i {
+    color: #36b9cc;
+}
+
+/* 移动端菜单优化 */
+@media (max-width: 991.98px) {
+    .navbar-collapse {
+        background-color: white;
+        padding: 20px;
+        border-radius: 8px;
+        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
+        margin-top: 10px;
+    }
+    
+    .navbar-nav .nav-link {
+        padding: 10px 15px;
+        border-radius: 4px;
+        margin-bottom: 5px;
+    }
+    
+    .navbar-nav .nav-link:hover {
+        background-color: #f8f9fc;
+    }
+}
+
+/* 平滑滚动优化 */
+html {
+    scroll-behavior: smooth;
+}
+
+/* 当前页面高亮 */
+.nav-link.active {
+    color: #4e73df !important;
+    font-weight: 600;
+}
+
+.nav-link.active::after {
+    content: '';
+    position: absolute;
+    bottom: -2px;
+    left: 0;
+    width: 100%;
+    height: 2px;
+    background-color: #4e73df;
+    border-radius: 2px;
+}
+
+/* 按钮悬停效果增强 */
+.btn {
+    transition: all 0.3s ease;
+}
+
+.btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
+}
+
+/* 卡片悬停效果 */
+.feature-card {
+    transition: all 0.3s ease;
+}
+
+.feature-card:hover {
+    transform: translateY(-5px);
+    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
+}
+
+/* 加载动画 */
+.loading-spinner {
+    display: inline-block;
+    width: 20px;
+    height: 20px;
+    border: 3px solid rgba(255, 255, 255, 0.3);
+    border-radius: 50%;
+    border-top-color: white;
+    animation: spin 1s ease-in-out infinite;
+}
+
+@keyframes spin {
+    to { transform: rotate(360deg); }
+}
+
+/* 响应式调整 */
+@media (max-width: 768px) {
+    #backToTop {
+        bottom: 20px;
+        right: 20px;
+        width: 45px;
+        height: 45px;
+    }
+    
+    .notification {
+        left: 20px;
+        right: 20px;
+        max-width: none;
+    }
+}
--- a/frontend/css/style.css
+++ b/frontend/css/style.css
--- a/frontend/html/admin_dashboard.html
+++ b/frontend/html/admin_dashboard.html
@@ -0,0 +1,353 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>学生成绩管理系统 - 管理员仪表板</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
+</head>
+</head>
+<body>
+    <!-- 顶部导航栏 -->
+    <nav class="navbar">
+        <div class="navbar-brand">
+            <i class="fas fa-graduation-cap"></i>
+            <span>XX学校成绩管理系统</span>
+        </div>
+        <div class="navbar-menu">
+            <a href="index.html" class="btn btn-secondary">
+                <i class="fas fa-home"></i> 主页
+            </a>
+            <div class="navbar-user">
+                <span class="user-name" id="userName">管理员</span>
+                <button id="logoutBtn" class="btn btn-primary">
+                    <i class="fas fa-sign-out-alt"></i> 退出
+                </button>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 仪表板容器 -->
+    <div class="dashboard-container">
+        <!-- 左侧侧边栏 -->
+        <aside class="sidebar">
+            <div class="sidebar-header">
+                <div class="user-info">
+                    <div class="user-avatar">
+                        <i class="fas fa-user-shield"></i>
+                    </div>
+                    <div class="user-details">
+                        <h3 id="adminName">管理员</h3>
+                        <p>系统管理员 | 权限：<span id="adminRole">超级管理员</span></p>
+                    </div>
+                </div>
+            </div>
+
+            <ul class="sidebar-menu">
+                <li>
+                    <a href="#" class="active">
+                        <i class="fas fa-tachometer-alt"></i>
+                        <span>仪表板</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="user_management.html">
+                        <i class="fas fa-users"></i>
+                        <span>用户管理</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="student_management.html">
+                        <i class="fas fa-user-graduate"></i>
+                        <span>学生管理</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="teacher_management.html">
+                        <i class="fas fa-chalkboard-teacher"></i>
+                        <span>教师管理</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="grade_statistics.html">
+                        <i class="fas fa-chart-bar"></i>
+                        <span>成绩统计</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="system_settings.html">
+                        <i class="fas fa-cog"></i>
+                        <span>系统设置</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="data_export.html">
+                        <i class="fas fa-download"></i>
+                        <span>数据导出</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="audit_log.html">
+                        <i class="fas fa-history"></i>
+                        <span>操作日志</span>
+                    </a>
+                </li>
+            </ul>
+        </aside>
+
+        <!-- 主内容区 -->
+        <main class="main-content">
+            <div class="content-header">
+                <div>
+                    <h1 class="page-title">管理员仪表板</h1>
+                    <div class="breadcrumb">
+                        <a href="index.html">主页</a>
+                        <i class="fas fa-chevron-right"></i>
+                        <span>管理员仪表板</span>
+                    </div>
+                </div>
+                <div class="current-time" id="currentTime"></div>
+            </div>
+
+            <!-- 统计卡片 -->
+            <div class="stats-grid">
+                <div class="stat-card">
+                    <div class="stat-icon users">
+                        <i class="fas fa-users"></i>
+                    </div>
+                    <div class="stat-content">
+                        <div class="stat-value" id="totalUsers">1,248</div>
+                        <div class="stat-label">总用户数</div>
+                        <div class="stat-change positive">
+                            <i class="fas fa-arrow-up"></i> 12 本周新增
+                        </div>
+                    </div>
+                </div>
+
+                <div class="stat-card">
+                    <div class="stat-icon students">
+                        <i class="fas fa-user-graduate"></i>
+                    </div>
+                    <div class="stat-content">
+                        <div class="stat-value" id="totalStudents">3,567</div>
+                        <div class="stat-label">学生总数</div>
+                        <div class="stat-change positive">
+                            <i class="fas fa-arrow-up"></i> 45 本周新增
+                        </div>
+                    </div>
+                </div>
+
+                <div class="stat-card">
+                    <div class="stat-icon teachers">
+                        <i class="fas fa-chalkboard-teacher"></i>
+                    </div>
+                    <div class="stat-content">
+                        <div class="stat-value" id="totalTeachers">128</div>
+                        <div class="stat-label">教师总数</div>
+                        <div class="stat-change">
+                            <i class="fas fa-minus"></i> 无变化
+                        </div>
+                    </div>
+                </div>
+
+                <div class="stat-card">
+                    <div class="stat-icon courses">
+                        <i class="fas fa-book"></i>
+                    </div>
+                    <div class="stat-content">
+                        <div class="stat-value" id="totalCourses">89</div>
+                        <div class="stat-label">课程总数</div>
+                        <div class="stat-change positive">
+                            <i class="fas fa-arrow-up"></i> 3 本周新增
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 功能卡片 -->
+            <div class="function-grid">
+                <div class="function-card" onclick="window.location.href='user_management.html'">
+                    <div class="function-icon">
+                        <i class="fas fa-users"></i>
+                    </div>
+                    <h3 class="function-title">用户管理</h3>
+                    <p class="function-description">
+                        管理所有用户账户，包括添加、编辑、删除用户，设置用户角色和权限。
+                    </p>
+                    <button class="btn btn-primary">进入管理</button>
+                </div>
+
+                <div class="function-card" onclick="window.location.href='student_management.html'">
+                    <div class="function-icon">
+                        <i class="fas fa-user-graduate"></i>
+                    </div>
+                    <h3 class="function-title">学生管理</h3>
+                    <p class="function-description">
+                        管理学生信息，包括学籍管理、班级分配、信息维护和批量导入导出。
+                    </p>
+                    <button class="btn btn-primary">进入管理</button>
+                </div>
+
+                <div class="function-card" onclick="window.location.href='teacher_management.html'">
+                    <div class="function-icon">
+                        <i class="fas fa-chalkboard-teacher"></i>
+                    </div>
+                    <h3 class="function-title">教师管理</h3>
+                    <p class="function-description">
+                        管理教师信息，包括教师分配、课程安排、权限设置和绩效考核。
+                    </p>
+                    <button class="btn btn-primary">进入管理</button>
+                </div>
+
+                <div class="function-card" onclick="window.location.href='grade_statistics.html'">
+                    <div class="function-icon">
+                        <i class="fas fa-chart-bar"></i>
+                    </div>
+                    <h3 class="function-title">成绩统计</h3>
+                    <p class="function-description">
+                        查看全校成绩统计，生成分析报告，支持图表展示和数据导出。
+                    </p>
+                    <button class="btn btn-primary">查看统计</button>
+                </div>
+            </div>
+
+            <!-- 系统状态 -->
+            <div class="system-status">
+                <h2 class="section-title">
+                    <i class="fas fa-server"></i>
+                    系统状态
+                </h2>
+                <div class="status-list">
+                    <div class="status-item">
+                        <div class="status-indicator online"></div>
+                        <div>
+                            <div class="status-label">数据库服务</div>
+                            <div class="status-value">运行正常 | 响应时间: 12ms</div>
+                        </div>
+                    </div>
+                    <div class="status-item">
+                        <div class="status-indicator online"></div>
+                        <div>
+                            <div class="status-label">Web服务器</div>
+                            <div class="status-value">运行正常 | 在线用户: 156</div>
+                        </div>
+                    </div>
+                    <div class="status-item">
+                        <div class="status-indicator online"></div>
+                        <div>
+                            <div class="status-label">文件存储</div>
+                            <div class="status-value">使用率: 65% | 剩余: 35GB</div>
+                        </div>
+                    </div>
+                    <div class="status-item">
+                        <div class="status-indicator warning"></div>
+                        <div>
+                            <div class="status-label">备份服务</div>
+                            <div class="status-value">上次备份: 2天前 | 建议立即备份</div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 最近活动 -->
+            <div class="recent-activities">
+                <h2 class="section-title">
+                    <i class="fas fa-history"></i>
+                    最近活动
+                </h2>
+                <ul class="activity-list">
+                    <li class="activity-item">
+                        <div class="activity-icon">
+                            <i class="fas fa-user-plus"></i>
+                        </div>
+                        <div class="activity-content">
+                            <div class="activity-title">新增学生用户</div>
+                            <div class="activity-time">10分钟前 | 操作人: 管理员</div>
+                        </div>
+                    </li>
+                    <li class="activity-item">
+                        <div class="activity-icon">
+                            <i class="fas fa-edit"></i>
+                        </div>
+                        <div class="activity-content">
+                            <div class="activity-title">修改教师信息</div>
+                            <div class="activity-time">1小时前 | 操作人: 管理员</div>
+                        </div>
+                    </li>
+                    <li class="activity-item">
+                        <div class="activity-icon">
+                            <i class="fas fa-chart-bar"></i>
+                        </div>
+                        <div class="activity-content">
+                            <div class="activity-title">生成成绩统计报告</div>
+                            <div class="activity-time">3小时前 | 操作人: 系统</div>
+                        </div>
+                    </li>
+                    <li class="activity-item">
+                        <div class="activity-icon">
+                            <i class="fas fa-download"></i>
+                        </div>
+                        <div class="activity-content">
+                            <div class="activity-title">导出用户数据</div>
+                            <div class="activity-time">5小时前 | 操作人: 管理员</div>
+                        </div>
+                    </li>
+                    <li class="activity-item">
+                        <div class="activity-icon">
+                            <i class="fas fa-cog"></i>
+                        </div>
+                        <div class="activity-content">
+                            <div class="activity-title">系统设置更新</div>
+                            <div class="activity-time">1天前 | 操作人: 管理员</div>
+                        </div>
+                    </li>
+                </ul>
+            </div>
+        </main>
+    </div>
+
+    <script>
+        // 更新当前时间
+        function updateCurrentTime() {
+            const now = new Date();
+            const options = { 
+                year: 'numeric', 
+                month: 'long', 
+                day: 'numeric',
+                weekday: 'long',
+                hour: '2-digit',
+                minute: '2-digit',
+                second: '2-digit'
+            };
+            document.getElementById('currentTime').textContent = now.toLocaleDateString('zh-CN', options);
+        }
+
+        // 页面加载时初始化
+        document.addEventListener('DOMContentLoaded', function() {
+            updateCurrentTime();
+            setInterval(updateCurrentTime, 1000);
+
+            // 退出登录
+            document.getElementById('logoutBtn').addEventListener('click', function() {
+                if (confirm('确定要退出登录吗？')) {
+                    // 清除登录状态
+                    localStorage.removeItem('token');
+                    localStorage.removeItem('userRole');
+                    localStorage.removeItem('userInfo');
+                    
+                    // 跳转到登录页面
+                    window.location.href = 'login.html';
+                }
+            });
+
+            // 加载用户信息
+            const userInfo = JSON.parse(localStorage.getItem('userInfo') || '{}');
+            if (userInfo.name) {
+                document.getElementById('adminName').textContent = userInfo.name;
+                document.getElementById('userName').textContent = userInfo.name;
+            }
+        });
+    </script>
+</body>
+</html>
--- a/frontend/html/grade_entry.html
+++ b/frontend/html/grade_entry.html
@@ -0,0 +1,459 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>成绩录入 - XX学校成绩管理系统</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
+
+</head>
+<body>
+    <!-- 导航栏 -->
+    <nav class="navbar">
+        <div class="navbar-brand">
+            <a href="index.html"><i class="fas fa-graduation-cap"></i> XX学校成绩管理系统</a>
+        </div>
+        <div class="navbar-menu">
+            <a href="teacher_dashboard.html" class="navbar-item"><i class="fas fa-tachometer-alt"></i> 教师仪表板</a>
+            <a href="grade_entry.html" class="navbar-item active"><i class="fas fa-edit"></i> 成绩录入</a>
+            <a href="grade_management.html" class="navbar-item"><i class="fas fa-list"></i> 成绩管理</a>
+            <div class="user-info">
+                <span class="user-name">李老师</span>
+                <span class="user-role">教师</span>
+                <a href="login.html" class="btn btn-outline btn-small"><i class="fas fa-sign-out-alt"></i> 退出</a>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 面包屑导航 -->
+    <div class="container">
+        <div class="breadcrumb">
+            <a href="index.html">主页</a>
+            <i class="fas fa-chevron-right"></i>
+            <a href="teacher_dashboard.html">教师仪表板</a>
+            <i class="fas fa-chevron-right"></i>
+            <span>成绩录入</span>
+        </div>
+    </div>
+
+    <!-- 主内容区 -->
+    <div class="grade-entry-container">
+        <div class="entry-header">
+            <h1><i class="fas fa-edit"></i> 成绩录入</h1>
+            <p>请选择班级和课程，然后为每个学生录入成绩</p>
+        </div>
+
+        <div class="entry-form">
+            <div class="form-row">
+                <div class="form-group">
+                    <label for="class-select"><i class="fas fa-users"></i> 选择班级</label>
+                    <select id="class-select" class="form-control">
+                        <option value="">请选择班级</option>
+                        <option value="class1">计算机科学与技术2021级1班</option>
+                        <option value="class2">计算机科学与技术2021级2班</option>
+                        <option value="class3">软件工程2021级1班</option>
+                        <option value="class4">软件工程2021级2班</option>
+                        <option value="class5">网络工程2021级1班</option>
+                    </select>
+                </div>
+                
+                <div class="form-group">
+                    <label for="course-name"><i class="fas fa-book"></i> 课程名称</label>
+                    <input type="text" id="course-name" placeholder="请输入课程名称，如：数据结构、操作系统等">
+                </div>
+            </div>
+            
+            <div class="form-group">
+                <label for="exam-date"><i class="fas fa-calendar-alt"></i> 考试日期</label>
+                <input type="date" id="exam-date">
+            </div>
+            
+            <div class="form-group">
+                <label><i class="fas fa-info-circle"></i> 备注说明（可选）</label>
+                <textarea id="remarks" rows="3" placeholder="可输入本次考试的说明信息，如：期中考试、期末考试等"></textarea>
+            </div>
+            
+            <div class="students-table-container">
+                <h3><i class="fas fa-user-graduate"></i> 学生成绩录入</h3>
+                <p class="text-muted">选择班级后，系统将自动加载该班级的学生列表</p>
+                
+                <div id="students-loading" class="loading" style="display: none;">
+                    <i class="fas fa-spinner"></i>
+                    <p>正在加载学生列表...</p>
+                </div>
+                
+                <div id="no-students" class="no-students" style="display: none;">
+                    <i class="fas fa-user-slash"></i>
+                    <p>该班级暂无学生数据，请先添加学生信息</p>
+                </div>
+                
+                <table id="students-table" class="students-table" style="display: none;">
+                    <thead>
+                        <tr>
+                            <th>学号</th>
+                            <th>姓名</th>
+                            <th>平时成绩</th>
+                            <th>期中成绩</th>
+                            <th>期末成绩</th>
+                            <th>总评成绩</th>
+                        </tr>
+                    </thead>
+                    <tbody id="students-tbody">
+                        <!-- 学生数据将通过JavaScript动态加载 -->
+                    </tbody>
+                </table>
+            </div>
+            
+            <div class="form-actions">
+                <button id="cancel-btn" class="btn btn-secondary btn-large">
+                    <i class="fas fa-times"></i> 取消
+                </button>
+                <button id="submit-btn" class="btn btn-primary btn-large" disabled>
+                    <i class="fas fa-check"></i> 提交成绩
+                </button>
+            </div>
+        </div>
+        
+        <div class="card">
+            <h3><i class="fas fa-lightbulb"></i> 使用说明</h3>
+            <ul class="text-muted">
+                <li>首先选择要录入成绩的班级和课程</li>
+                <li>系统会自动加载该班级的学生列表</li>
+                <li>为每个学生输入平时成绩、期中成绩和期末成绩</li>
+                <li>总评成绩将根据权重自动计算（默认权重：平时20%，期中30%，期末50%）</li>
+                <li>确认无误后点击“提交成绩”按钮保存数据</li>
+                <li>提交后可以在“成绩管理”页面查看和修改已录入的成绩</li>
+            </ul>
+        </div>
+    </div>
+
+    <!-- JavaScript -->
+    <script>
+        // 模拟学生数据
+        const mockStudents = [
+            { id: '2021001', name: '张三', usual: '', midterm: '', final: '', total: '' },
+            { id: '2021002', name: '李四', usual: '', midterm: '', final: '', total: '' },
+            { id: '2021003', name: '王五', usual: '', midterm: '', final: '', total: '' },
+            { id: '2021004', name: '赵六', usual: '', midterm: '', final: '', total: '' },
+            { id: '2021005', name: '钱七', usual: '', midterm: '', final: '', total: '' },
+            { id: '2021006', name: '孙八', usual: '', midterm: '', final: '', total: '' },
+            { id: '2021007', name: '周九', usual: '', midterm: '', final: '', total: '' },
+            { id: '2021008', name: '吴十', usual: '', midterm: '', final: '', total: '' }
+        ];
+        
+        // DOM元素
+        const classSelect = document.getElementById('class-select');
+        const courseNameInput = document.getElementById('course-name');
+        const examDateInput = document.getElementById('exam-date');
+        const remarksInput = document.getElementById('remarks');
+        const studentsLoading = document.getElementById('students-loading');
+        const noStudents = document.getElementById('no-students');
+        const studentsTable = document.getElementById('students-table');
+        const studentsTbody = document.getElementById('students-tbody');
+        const cancelBtn = document.getElementById('cancel-btn');
+        const submitBtn = document.getElementById('submit-btn');
+        
+        // 设置默认考试日期为今天
+        const today = new Date().toISOString().split('T')[0];
+        examDateInput.value = today;
+        
+        // 班级选择变化事件
+        classSelect.addEventListener('change', function() {
+            const selectedClass = this.value;
+            
+            if (!selectedClass) {
+                hideStudentsTable();
+                submitBtn.disabled = true;
+                return;
+            }
+            
+            // 显示加载状态
+            showLoading();
+            
+            // 模拟API调用延迟
+            setTimeout(() => {
+                loadStudentsForClass(selectedClass);
+            }, 1000);
+        });
+        
+        // 加载学生数据
+        function loadStudentsForClass(className) {
+            // 模拟API响应
+            if (mockStudents.length > 0) {
+                renderStudentsTable(mockStudents);
+            } else {
+                showNoStudents();
+            }
+        }
+        
+        // 渲染学生表格
+        function renderStudentsTable(students) {
+            hideLoading();
+            
+            // 清空表格
+            studentsTbody.innerHTML = '';
+            
+            // 添加学生行
+            students.forEach((student, index) => {
+                const row = document.createElement('tr');
+                row.innerHTML = `
+                    <td>${student.id}</td>
+                    <td>${student.name}</td>
+                    <td>
+                        <input type="number" class="grade-input usual-grade" 
+                               data-index="${index}" min="0" max="100" 
+                               placeholder="0-100" value="${student.usual}">
+                    </td>
+                    <td>
+                        <input type="number" class="grade-input midterm-grade" 
+                               data-index="${index}" min="0" max="100" 
+                               placeholder="0-100" value="${student.midterm}">
+                    </td>
+                    <td>
+                        <input type="number" class="grade-input final-grade" 
+                               data-index="${index}" min="0" max="100" 
+                               placeholder="0-100" value="${student.final}">
+                    </td>
+                    <td>
+                        <span class="total-grade" data-index="${index}">${student.total || ''}</span>
+                    </td>
+                `;
+                
+                studentsTbody.appendChild(row);
+            });
+            
+            // 显示表格
+            studentsTable.style.display = 'table';
+            noStudents.style.display = 'none';
+            
+            // 启用提交按钮
+            submitBtn.disabled = false;
+            
+            // 添加成绩输入事件监听
+            addGradeInputListeners();
+        }
+        
+        // 显示加载状态
+        function showLoading() {
+            studentsLoading.style.display = 'block';
+            studentsTable.style.display = 'none';
+            noStudents.style.display = 'none';
+        }
+        
+        // 隐藏加载状态
+        function hideLoading() {
+            studentsLoading.style.display = 'none';
+        }
+        
+        // 显示无学生数据
+        function showNoStudents() {
+            hideLoading();
+            studentsTable.style.display = 'none';
+            noStudents.style.display = 'block';
+        }
+        
+        // 隐藏学生表格
+        function hideStudentsTable() {
+            studentsTable.style.display = 'none';
+            noStudents.style.display = 'none';
+        }
+        
+        // 添加成绩输入事件监听
+        function addGradeInputListeners() {
+            const usualGrades = document.querySelectorAll('.usual-grade');
+            const midtermGrades = document.querySelectorAll('.midterm-grade');
+            const finalGrades = document.querySelectorAll('.final-grade');
+            
+            usualGrades.forEach(input => {
+                input.addEventListener('input', calculateTotalGrade);
+            });
+            
+            midtermGrades.forEach(input => {
+                input.addEventListener('input', calculateTotalGrade);
+            });
+            
+            finalGrades.forEach(input => {
+                input.addEventListener('input', calculateTotalGrade);
+            });
+        }
+        
+        // 计算总评成绩
+        function calculateTotalGrade(event) {
+            const input = event.target;
+            const index = input.getAttribute('data-index');
+            
+            // 获取三个成绩
+            const usualInput = document.querySelector(`.usual-grade[data-index="${index}"]`);
+            const midtermInput = document.querySelector(`.midterm-grade[data-index="${index}"]`);
+            const finalInput = document.querySelector(`.final-grade[data-index="${index}"]`);
+            const totalSpan = document.querySelector(`.total-grade[data-index="${index}"]`);
+            
+            const usual = parseFloat(usualInput.value) || 0;
+            const midterm = parseFloat(midtermInput.value) || 0;
+            const final = parseFloat(finalInput.value) || 0;
+            
+            // 计算总评成绩（权重：平时20%，期中30%，期末50%）
+            const total = (usual * 0.2) + (midterm * 0.3) + (final * 0.5);
+            
+            // 显示总评成绩（四舍五入到整数）
+            totalSpan.textContent = Math.round(total);
+            
+            // 根据成绩范围设置颜色
+            if (total >= 90) {
+                totalSpan.style.color = '#38a169';
+                totalSpan.style.fontWeight = 'bold';
+            } else if (total >= 60) {
+                totalSpan.style.color = '#d69e2e';
+                totalSpan.style.fontWeight = 'normal';
+            } else {
+                totalSpan.style.color = '#e53e3e';
+                totalSpan.style.fontWeight = 'bold';
+            }
+        }
+        
+        // 表单验证
+        function validateForm() {
+            const className = classSelect.value;
+            const courseName = courseNameInput.value.trim();
+            
+            if (!className) {
+                alert('请选择班级');
+                return false;
+            }
+            
+            if (!courseName) {
+                alert('请输入课程名称');
+                courseNameInput.focus();
+                return false;
+            }
+            
+            // 检查是否有学生成绩未填写
+            const usualGrades = document.querySelectorAll('.usual-grade');
+            const midtermGrades = document.querySelectorAll('.midterm-grade');
+            const finalGrades = document.querySelectorAll('.final-grade');
+            
+            for (let i = 0; i < usualGrades.length; i++) {
+                const usual = usualGrades[i].value.trim();
+                const midterm = midtermGrades[i].value.trim();
+                const final = finalGrades[i].value.trim();
+                
+                if (!usual || !midterm || !final) {
+                    alert(`请填写第${i + 1}行学生的所有成绩`);
+                    return false;
+                }
+                
+                const usualNum = parseFloat(usual);
+                const midtermNum = parseFloat(midterm);
+                const finalNum = parseFloat(final);
+                
+                if (usualNum < 0 || usualNum > 100 || 
+                    midtermNum < 0 || midtermNum > 100 || 
+                    finalNum < 0 || finalNum > 100) {
+                    alert(`第${i + 1}行学生的成绩必须在0-100之间`);
+                    return false;
+                }
+            }
+            
+            return true;
+        }
+        
+        // 收集表单数据
+        function collectFormData() {
+            const className = classSelect.options[classSelect.selectedIndex].text;
+            const courseName = courseNameInput.value.trim();
+            const examDate = examDateInput.value;
+            const remarks = remarksInput.value.trim();
+            
+            const grades = [];
+            const rows = studentsTbody.querySelectorAll('tr');
+            
+            rows.forEach((row, index) => {
+                const studentId = row.cells[0].textContent;
+                const studentName = row.cells[1].textContent;
+                const usual = row.cells[2].querySelector('input').value;
+                const midterm = row.cells[3].querySelector('input').value;
+                const final = row.cells[4].querySelector('input').value;
+                const total = row.cells[5].querySelector('span').textContent;
+                
+                grades.push({
+                    studentId,
+                    studentName,
+                    usual: parseFloat(usual),
+                    midterm: parseFloat(midterm),
+                    final: parseFloat(final),
+                    total: parseFloat(total)
+                });
+            });
+            
+            return {
+                className,
+                courseName,
+                examDate,
+                remarks,
+                grades
+            };
+        }
+        
+        // 提交表单
+        function submitForm() {
+            if (!validateForm()) {
+                return;
+            }
+            
+            const formData = collectFormData();
+            
+            // 显示提交中状态
+            submitBtn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> 提交中...';
+            submitBtn.disabled = true;
+            
+            // 模拟API调用
+            setTimeout(() => {
+                // 模拟成功响应
+                alert(`成绩提交成功！\n班级：${formData.className}\n课程：${formData.courseName}\n共录入${formData.grades.length}名学生成绩`);
+                
+                // 重置按钮状态
+                submitBtn.innerHTML = '<i class="fas fa-check"></i> 提交成绩';
+                submitBtn.disabled = false;
+                
+                // 重置表单
+                resetForm();
+            }, 1500);
+        }
+        
+        // 重置表单
+        function resetForm() {
+            classSelect.value = '';
+            courseNameInput.value = '';
+            examDateInput.value = today;
+            remarksInput.value = '';
+            
+            // 清空学生表格
+            studentsTbody.innerHTML = '';
+            studentsTable.style.display = 'none';
+            noStudents.style.display = 'none';
+            
+            // 禁用提交按钮
+            submitBtn.disabled = true;
+        }
+        
+        // 取消按钮事件
+        cancelBtn.addEventListener('click', function() {
+            if (confirm('确定要取消吗？所有未保存的更改将会丢失。')) {
+                resetForm();
+            }
+        });
+        
+        // 提交按钮事件
+        submitBtn.addEventListener('click', submitForm);
+        
+        // 页面加载时初始化
+        document.addEventListener('DOMContentLoaded', function() {
+            // 检查是否有必要的数据
+            if (!classSelect.value) {
+                submitBtn.disabled = true;
+            }
+        });
+    </script>
+</body>
+</html>
--- a/frontend/html/grade_management.html
+++ b/frontend/html/grade_management.html
@@ -0,0 +1,584 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>成绩查询/管理 - 学生成绩管理系统</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
+
+</head>
+<body>
+    <!-- 导航栏 -->
+    <nav class="navbar">
+        <div class="nav-container">
+            <div class="nav-brand">
+                <a href="index.html">
+                    <i class="fas fa-graduation-cap"></i>
+                    <span>XX学校成绩管理系统</span>
+                </a>
+            </div>
+            <div class="nav-menu">
+                <a href="teacher_dashboard.html" class="nav-link">
+                    <i class="fas fa-tachometer-alt"></i>
+                    <span>教师仪表板</span>
+                </a>
+                <a href="grade_entry.html" class="nav-link">
+                    <i class="fas fa-edit"></i>
+                    <span>成绩录入</span>
+                </a>
+                <a href="grade_management.html" class="nav-link active">
+                    <i class="fas fa-search"></i>
+                    <span>成绩管理</span>
+                </a>
+            </div>
+            <div class="nav-user">
+                <div class="user-info">
+                    <i class="fas fa-user-circle"></i>
+                    <span>张老师</span>
+                </div>
+                <a href="login.html" class="btn-logout">
+                    <i class="fas fa-sign-out-alt"></i>
+                    <span>退出</span>
+                </a>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 主内容区 -->
+    <main class="main-content">
+        <div class="container">
+            <!-- 面包屑导航 -->
+            <div class="breadcrumb">
+                <a href="index.html">主页</a>
+                <i class="fas fa-chevron-right"></i>
+                <a href="teacher_dashboard.html">教师仪表板</a>
+                <i class="fas fa-chevron-right"></i>
+                <span>成绩查询/管理</span>
+            </div>
+            
+            <!-- 页面标题 -->
+            <div class="page-header">
+                <h1 class="page-title">成绩查询/管理</h1>
+                <p class="page-description">查询、修改和删除学生成绩记录</p>
+            </div>
+            
+            <!-- 筛选区域 -->
+            <div class="filter-section">
+                <h2 class="filter-title">
+                    <i class="fas fa-filter"></i>
+                    筛选条件
+                </h2>
+                <div class="filter-form">
+                    <div class="form-group">
+                        <label for="class-select">班级</label>
+                        <select id="class-select" class="form-control">
+                            <option value="">全部班级</option>
+                            <option value="class1">计算机科学与技术1班</option>
+                            <option value="class2">计算机科学与技术2班</option>
+                            <option value="class3">软件工程1班</option>
+                            <option value="class4">软件工程2班</option>
+                            <option value="class5">网络工程1班</option>
+                        </select>
+                    </div>
+                    <div class="form-group">
+                        <label for="course-select">课程</label>
+                        <select id="course-select" class="form-control">
+                            <option value="">全部课程</option>
+                            <option value="course1">数据结构</option>
+                            <option value="course2">操作系统</option>
+                            <option value="course3">计算机网络</option>
+                            <option value="course4">数据库系统</option>
+                            <option value="course5">软件工程</option>
+                        </select>
+                    </div>
+                    <div class="form-group">
+                        <label for="student-id">学生学号</label>
+                        <input type="text" id="student-id" class="form-control" placeholder="输入学生学号">
+                    </div>
+                    <div class="form-group">
+                        <label for="student-name">学生姓名</label>
+                        <input type="text" id="student-name" class="form-control" placeholder="输入学生姓名">
+                    </div>
+                    <div class="filter-actions">
+                        <button id="search-btn" class="btn-search">
+                            <i class="fas fa-search"></i>
+                            查询
+                        </button>
+                        <button id="reset-btn" class="btn-reset">
+                            <i class="fas fa-redo"></i>
+                            重置
+                        </button>
+                    </div>
+                </div>
+            </div>
+            
+            <!-- 结果区域 -->
+            <div class="results-section">
+                <div class="results-header">
+                    <h2 class="results-title">查询结果</h2>
+                    <div class="results-actions">
+                        <button id="export-btn" class="btn-export">
+                            <i class="fas fa-file-export"></i>
+                            导出成绩
+                        </button>
+                        <button id="batch-delete-btn" class="btn-batch-delete">
+                            <i class="fas fa-trash-alt"></i>
+                            批量删除
+                        </button>
+                    </div>
+                </div>
+                
+                <div class="table-responsive">
+                    <table class="grade-table">
+                        <thead>
+                            <tr>
+                                <th><input type="checkbox" id="select-all"></th>
+                                <th>学号</th>
+                                <th>姓名</th>
+                                <th>班级</th>
+                                <th>课程</th>
+                                <th>平时成绩</th>
+                                <th>期中成绩</th>
+                                <th>期末成绩</th>
+                                <th>总评成绩</th>
+                                <th>等级</th>
+                                <th>操作</th>
+                            </tr>
+                        </thead>
+                        <tbody id="grade-table-body">
+                            <!-- 数据将通过JavaScript动态加载 -->
+                            <tr>
+                                <td colspan="11" class="loading">
+                                    <i class="fas fa-spinner fa-spin"></i>
+                                    <p>正在加载成绩数据...</p>
+                                </td>
+                            </tr>
+                        </tbody>
+                    </table>
+                </div>
+                
+                <!-- 分页 -->
+                <div class="pagination">
+                    <button id="prev-page" disabled>上一页</button>
+                    <button class="active">1</button>
+                    <button>2</button>
+                    <button>3</button>
+                    <button id="next-page">下一页</button>
+                </div>
+            </div>
+        </div>
+    </main>
+
+    <!-- 页脚 -->
+    <footer class="footer">
+        <div class="container">
+            <p>&copy; 2023 XX学校成绩管理系统. 版权所有.</p>
+            <p>技术支持: 计算机科学与技术学院</p>
+        </div>
+    </footer>
+
+    <script>
+        // 模拟成绩数据
+        const mockGrades = [
+            {
+                id: 1,
+                studentId: "20230001",
+                studentName: "张三",
+                className: "计算机科学与技术1班",
+                courseName: "数据结构",
+                regularScore: 85,
+                midtermScore: 88,
+                finalScore: 90,
+                totalScore: 88.5,
+                grade: "优秀"
+            },
+            {
+                id: 2,
+                studentId: "20230002",
+                studentName: "李四",
+                className: "计算机科学与技术1班",
+                courseName: "数据结构",
+                regularScore: 78,
+                midtermScore: 82,
+                finalScore: 85,
+                totalScore: 82.3,
+                grade: "良好"
+            },
+            {
+                id: 3,
+                studentId: "20230003",
+                studentName: "王五",
+                className: "计算机科学与技术2班",
+                courseName: "操作系统",
+                regularScore: 92,
+                midtermScore: 88,
+                finalScore: 95,
+                totalScore: 91.8,
+                grade: "优秀"
+            },
+            {
+                id: 4,
+                studentId: "20230004",
+                studentName: "赵六",
+                className: "计算机科学与技术2班",
+                courseName: "操作系统",
+                regularScore: 65,
+                midtermScore: 70,
+                finalScore: 68,
+                totalScore: 67.9,
+                grade: "及格"
+            },
+            {
+                id: 5,
+                studentId: "20230005",
+                studentName: "钱七",
+                className: "软件工程1班",
+                courseName: "数据库系统",
+                regularScore: 88,
+                midtermScore: 85,
+                finalScore: 90,
+                totalScore: 87.9,
+                grade: "良好"
+            },
+            {
+                id: 6,
+                studentId: "20230006",
+                studentName: "孙八",
+                className: "软件工程1班",
+                courseName: "数据库系统",
+                regularScore: 75,
+                midtermScore: 78,
+                finalScore: 80,
+                totalScore: 78.1,
+                grade: "中等"
+            },
+            {
+                id: 7,
+                studentId: "20230007",
+                studentName: "周九",
+                className: "软件工程2班",
+                courseName: "软件工程",
+                regularScore: 90,
+                midtermScore: 92,
+                finalScore: 88,
+                totalScore: 89.6,
+                grade: "优秀"
+            },
+            {
+                id: 8,
+                studentId: "20230008",
+                studentName: "吴十",
+                className: "软件工程2班",
+                courseName: "软件工程",
+                regularScore: 82,
+                midtermScore: 85,
+                finalScore: 87,
+                totalScore: 85.1,
+                grade: "良好"
+            }
+        ];
+        
+        // DOM元素
+        const searchBtn = document.getElementById('search-btn');
+        const resetBtn = document.getElementById('reset-btn');
+        const exportBtn = document.getElementById('export-btn');
+        const batchDeleteBtn = document.getElementById('batch-delete-btn');
+        const selectAllCheckbox = document.getElementById('select-all');
+        const gradeTableBody = document.getElementById('grade-table-body');
+        const classSelect = document.getElementById('class-select');
+        const courseSelect = document.getElementById('course-select');
+        const studentIdInput = document.getElementById('student-id');
+        const studentNameInput = document.getElementById('student-name');
+        
+        // 当前选中的成绩ID
+        let selectedGradeIds = new Set();
+        
+        // 初始化页面
+        function initPage() {
+            renderGradeTable(mockGrades);
+            setupEventListeners();
+            updateSelectedCount();
+        }
+        
+        // 渲染成绩表格
+        function renderGradeTable(grades) {
+            if (grades.length === 0) {
+                gradeTableBody.innerHTML = `
+                    <tr>
+                        <td colspan="11" class="no-results">
+                            <i class="fas fa-search"></i>
+                            <h3>未找到相关成绩记录</h3>
+                            <p>请尝试调整筛选条件或添加新的成绩记录</p>
+                        </td>
+                    </tr>
+                `;
+                return;
+            }
+            
+            let tableHTML = '';
+            
+            grades.forEach(grade => {
+                // 根据成绩确定CSS类
+                let gradeClass = 'grade-cell';
+                if (grade.totalScore >= 90) {
+                    gradeClass += ' grade-excellent';
+                } else if (grade.totalScore >= 80) {
+                    gradeClass += ' grade-good';
+                } else if (grade.totalScore < 60) {
+                    gradeClass += ' grade-poor';
+                }
+                
+                // 根据总评成绩确定等级
+                let gradeLevel = grade.grade;
+                
+                tableHTML += `
+                    <tr data-grade-id="${grade.id}">
+                        <td>
+                            <input type="checkbox" class="grade-checkbox" data-id="${grade.id}">
+                        </td>
+                        <td>${grade.studentId}</td>
+                        <td>${grade.studentName}</td>
+                        <td>${grade.className}</td>
+                        <td>${grade.courseName}</td>
+                        <td>${grade.regularScore}</td>
+                        <td>${grade.midtermScore}</td>
+                        <td>${grade.finalScore}</td>
+                        <td class="${gradeClass}">${grade.totalScore.toFixed(1)}</td>
+                        <td>${gradeLevel}</td>
+                        <td>
+                            <div class="action-buttons">
+                                <button class="btn-edit" onclick="editGrade(${grade.id})">
+                                    <i class="fas fa-edit"></i> 修改
+                                </button>
+                                <button class="btn-delete" onclick="deleteGrade(${grade.id})">
+                                    <i class="fas fa-trash"></i> 删除
+                                </button>
+                            </div>
+                        </td>
+                    </tr>
+                `;
+            });
+            
+            gradeTableBody.innerHTML = tableHTML;
+            
+            // 重新绑定复选框事件
+            document.querySelectorAll('.grade-checkbox').forEach(checkbox => {
+                checkbox.addEventListener('change', function() {
+                    const gradeId = parseInt(this.getAttribute('data-id'));
+                    if (this.checked) {
+                        selectedGradeIds.add(gradeId);
+                    } else {
+                        selectedGradeIds.delete(gradeId);
+                        selectAllCheckbox.checked = false;
+                    }
+                    updateSelectedCount();
+                });
+            });
+        }
+        
+        // 设置事件监听器
+        function setupEventListeners() {
+            // 查询按钮
+            searchBtn.addEventListener('click', function() {
+                performSearch();
+            });
+            
+            // 重置按钮
+            resetBtn.addEventListener('click', function() {
+                classSelect.value = '';
+                courseSelect.value = '';
+                studentIdInput.value = '';
+                studentNameInput.value = '';
+                renderGradeTable(mockGrades);
+                selectedGradeIds.clear();
+                selectAllCheckbox.checked = false;
+                updateSelectedCount();
+            });
+            
+            // 导出按钮
+            exportBtn.addEventListener('click', function() {
+                exportGrades();
+            });
+            
+            // 批量删除按钮
+            batchDeleteBtn.addEventListener('click', function() {
+                if (selectedGradeIds.size === 0) {
+                    alert('请先选择要删除的成绩记录！');
+                    return;
+                }
+                
+                if (confirm(`确定要删除选中的 ${selectedGradeIds.size} 条成绩记录吗？此操作不可撤销。`)) {
+                    batchDeleteGrades();
+                }
+            });
+            
+            // 全选复选框
+            selectAllCheckbox.addEventListener('change', function() {
+                const checkboxes = document.querySelectorAll('.grade-checkbox');
+                checkboxes.forEach(checkbox => {
+                    checkbox.checked = this.checked;
+                    const gradeId = parseInt(checkbox.getAttribute('data-id'));
+                    if (this.checked) {
+                        selectedGradeIds.add(gradeId);
+                    } else {
+                        selectedGradeIds.delete(gradeId);
+                    }
+                });
+                updateSelectedCount();
+            });
+            
+            // 输入框回车键搜索
+            [studentIdInput, studentNameInput].forEach(input => {
+                input.addEventListener('keypress', function(e) {
+                    if (e.key === 'Enter') {
+                        performSearch();
+                    }
+                });
+            });
+        }
+        
+        // 执行搜索
+        function performSearch() {
+            const selectedClass = classSelect.value;
+            const selectedCourse = courseSelect.value;
+            const studentId = studentIdInput.value.trim();
+            const studentName = studentNameInput.value.trim();
+            
+            // 显示加载状态
+            gradeTableBody.innerHTML = `
+                <tr>
+                    <td colspan="11" class="loading">
+                        <i class="fas fa-spinner fa-spin"></i>
+                        <p>正在搜索成绩数据...</p>
+                    </td>
+                </tr>
+            `;
+            
+            // 模拟API延迟
+            setTimeout(() => {
+                let filteredGrades = mockGrades.filter(grade => {
+                    // 班级筛选
+                    if (selectedClass && grade.className !== selectedClass) {
+                        return false;
+                    }
+                    
+                    // 课程筛选
+                    if (selectedCourse && grade.courseName !== selectedCourse) {
+                        return false;
+                    }
+                    
+                    // 学号筛选
+                    if (studentId && !grade.studentId.includes(studentId)) {
+                        return false;
+                    }
+                    
+                    // 姓名筛选
+                    if (studentName && !grade.studentName.includes(studentName)) {
+                        return false;
+                    }
+                    
+                    return true;
+                });
+                
+                renderGradeTable(filteredGrades);
+                selectedGradeIds.clear();
+                selectAllCheckbox.checked = false;
+                updateSelectedCount();
+            }, 500);
+        }
+        
+        // 导出成绩
+        function exportGrades() {
+            // 这里应该调用后端API导出成绩
+            // 暂时使用模拟导出
+            alert('成绩导出功能正在开发中，将支持Excel和CSV格式导出。');
+            
+            // 模拟导出过程
+            exportBtn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> 导出中...';
+            exportBtn.disabled = true;
+            
+            setTimeout(() => {
+                exportBtn.innerHTML = '<i class="fas fa-file-export"></i> 导出成绩';
+                exportBtn.disabled = false;
+                
+                // 在实际应用中，这里会触发文件下载
+                // 暂时显示成功消息
+                showNotification('成绩导出成功！文件已开始下载。', 'success');
+            }, 1500);
+        }
+        
+        // 批量删除成绩
+        function batchDeleteGrades() {
+            // 这里应该调用后端API删除成绩
+            // 暂时使用模拟删除
+            batchDeleteBtn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> 删除中...';
+            batchDeleteBtn.disabled = true;
+            
+            setTimeout(() => {
+                // 从模拟数据中删除选中的成绩
+                selectedGradeIds.forEach(id => {
+                    const index = mockGrades.findIndex(grade => grade.id === id);
+                    if (index !== -1) {
+                        mockGrades.splice(index, 1);
+                    }
+                });
+                
+                // 重新渲染表格
+                renderGradeTable(mockGrades);
+                selectedGradeIds.clear();
+                selectAllCheckbox.checked = false;
+                
+                batchDeleteBtn.innerHTML = '<i class="fas fa-trash-alt"></i> 批量删除';
+                batchDeleteBtn.disabled = false;
+                
+                showNotification(`成功删除 ${selectedGradeIds.size} 条成绩记录！`, 'success');
+                updateSelectedCount();
+            }, 1000);
+        }
+        
+        // 编辑成绩
+        function editGrade(gradeId) {
+            // 这里应该跳转到编辑页面或打开编辑模态框
+            // 暂时显示提示
+            alert(`编辑成绩 ID: ${gradeId}\n在实际应用中，这里会打开编辑表单。`);
+        }
+        
+        // 删除单个成绩
+        function deleteGrade(gradeId) {
+            if (confirm('确定要删除这条成绩记录吗？此操作不可撤销。')) {
+                // 这里应该调用后端API删除成绩
+                // 暂时使用模拟删除
+                const index = mockGrades.findIndex(grade => grade.id === gradeId);
+                if (index !== -1) {
+                    mockGrades.splice(index, 1);
+                    renderGradeTable(mockGrades);
+                    selectedGradeIds.delete(gradeId);
+                    updateSelectedCount();
+                    showNotification('成绩记录已删除！', 'success');
+                }
+            }
+        }
+        
+        // 更新选中计数
+        function updateSelectedCount() {
+            const count = selectedGradeIds.size;
+            if (count > 0) {
+                batchDeleteBtn.innerHTML = `<i class="fas fa-trash-alt"></i> 批量删除 (${count})`;
+            } else {
+                batchDeleteBtn.innerHTML = '<i class="fas fa-trash-alt"></i> 批量删除';
+            }
+        }
+        
+        // 显示通知
+        function showNotification(message, type = 'info') {
+            // 在实际应用中，这里会显示一个美观的通知组件
+            // 暂时使用alert
+            alert(message);
+        }
+        
+        // 页面加载完成后初始化
+        document.addEventListener('DOMContentLoaded', initPage);
+    </script>
+</body>
+</html>
--- a/frontend/html/index.html
+++ b/frontend/html/index.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>学生成绩管理系统</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="../css/main.css">
+</head>
+<body>
+    <!-- 导航栏 -->
+    <nav class="navbar">
+        <div class="navbar-brand">
+            <i class="fas fa-graduation-cap"></i>
+            <span>XX学校成绩管理系统</span>
+        </div>
+        <div class="navbar-menu">
+            <a href="index.html" class="btn btn-secondary">
+                <i class="fas fa-home"></i> 主页
+            </a>
+            <div class="navbar-user">
+                <a href="login.html" class="btn btn-primary" id="loginBtn">
+                    <i class="fas fa-sign-in-alt"></i> 登录
+                </a>
+                <a href="register.html" class="btn btn-secondary" id="registerBtn">
+                    <i class="fas fa-user-plus"></i> 注册
+                </a>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 主体内容区 -->
+    <main>
+        <!-- 英雄区域 -->
+        <section class="hero-section">
+            <div class="hero-content">
+                <h1 class="hero-title">XX学校学生成绩管理系统</h1>
+                <p class="hero-subtitle">
+                    高效、安全、智能的成绩管理平台，为学校师生提供全方位的成绩管理服务，
+                    实现成绩录入、查询、统计和分析的一体化解决方案。
+                </p>
+                <div class="cta-buttons">
+                    <a href="login.html" class="btn btn-primary" id="heroLoginBtn">
+                        <i class="fas fa-sign-in-alt"></i> 立即登录
+                    </a>
+                    <a href="#features" class="btn btn-secondary">
+                        <i class="fas fa-info-circle"></i> 了解功能
+                    </a>
+                </div>
+            </div>
+        </section>
+
+        <!-- 功能特色 -->
+        <section id="features" class="features-section">
+            <h2 class="section-title">系统功能特色</h2>
+            <div class="features-grid">
+                <div class="feature-card">
+                    <div class="feature-icon">
+                        <i class="fas fa-user-graduate"></i>
+                    </div>
+                    <h3 class="feature-title">学生成绩查询</h3>
+                    <p class="feature-description">
+                        学生可随时查看个人成绩，包括各科成绩、平均分、排名等信息，
+                        支持成绩趋势分析和历史记录查看。
+                    </p>
+                </div>
+
+                <div class="feature-card">
+                    <div class="feature-icon">
+                        <i class="fas fa-chalkboard-teacher"></i>
+                    </div>
+                    <h3 class="feature-title">教师成绩管理</h3>
+                    <p class="feature-description">
+                        教师可便捷录入、修改、查询学生成绩，支持批量操作和成绩统计分析，
+                        提供多种数据导出格式。
+                    </p>
+                </div>
+
+                <div class="feature-card">
+                    <div class="feature-icon">
+                        <i class="fas fa-user-shield"></i>
+                    </div>
+                    <h3 class="feature-title">管理员权限控制</h3>
+                    <p class="feature-description">
+                        管理员可管理用户账户、学生信息，查看系统统计报表，
+                        设置权限和系统参数，确保数据安全。
+                    </p>
+                </div>
+
+                <div class="feature-card">
+                    <div class="feature-icon">
+                        <i class="fas fa-chart-line"></i>
+                    </div>
+                    <h3 class="feature-title">智能统计分析</h3>
+                    <p class="feature-description">
+                        提供丰富的图表统计功能，包括成绩分布、趋势分析、对比图表等，
+                        帮助学校进行教学评估和决策支持。
+                    </p>
+                </div>
+            </div>
+        </section>
+
+        <!-- 行动号召 -->
+        <section class="cta-section">
+            <h2 class="cta-title">立即体验智能成绩管理</h2>
+            <p style="font-size: 1.2rem; color: #666; margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto;">
+                加入XX学校成绩管理系统，体验高效、便捷的成绩管理服务。
+            </p>
+            <div class="cta-buttons">
+                <a href="login.html" class="btn btn-primary">
+                    <i class="fas fa-sign-in-alt"></i> 开始使用
+                </a>
+                <a href="#" class="btn btn-secondary">
+                    <i class="fas fa-book"></i> 查看文档
+                </a>
+            </div>
+        </section>
+    </main>
+
+    <!-- 页脚 -->
+    <footer class="footer">
+        <div class="footer-content">
+            <h3 style="margin-bottom: 20px;">XX学校学生成绩管理系统</h3>
+            <p style="color: #ccc; margin-bottom: 20px; max-width: 600px; margin-left: auto; margin-right: auto;">
+                致力于为学校提供专业、安全、高效的数字化成绩管理解决方案。
+            </p>
+            <div class="footer-links">
+                <a href="#"><i class="fas fa-info-circle"></i> 关于我们</a>
+                <a href="#"><i class="fas fa-envelope"></i> 联系我们</a>
+                <a href="#"><i class="fas fa-shield-alt"></i> 隐私政策</a>
+                <a href="#"><i class="fas fa-file-contract"></i> 服务条款</a>
+            </div>
+            <div class="copyright">
+                <p>© 2023 XX学校学生成绩管理系统 版权所有</p>
+                <p>联系电话：010-12345678 | 邮箱：contact@school.edu.cn</p>
+            </div>
+        </div>
+    </footer>
+
+    <script src="../js/main.js"></script>
+</body>
+</html>
--- a/frontend/html/login.html
+++ b/frontend/html/login.html
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>学生成绩管理系统 - 登录</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
+</head>
+<body>
+    <div class="auth-container">
+        <div class="auth-header">
+            <h1><i class="fas fa-graduation-cap"></i> 学生成绩管理系统</h1>
+            <p>请登录您的账户</p>
+        </div>
+        
+        <div class="auth-card">
+            <form id="loginForm">
+                <div class="form-group">
+                    <label for="id">
+                        <i class="fas fa-user"></i> 学号/工号
+                    </label>
+                    <input type="text" id="id" name="id" required 
+                           placeholder="请输入学号/工号">
+                </div>
+                
+                <div class="form-group">
+                    <label for="password">
+                        <i class="fas fa-lock"></i> 密码
+                    </label>
+                    <input type="password" id="password" name="password" required 
+                           placeholder="请输入密码">
+                </div>
+                
+                <div class="form-group">
+                    <label for="role">
+                        <i class="fas fa-user-tag"></i> 角色
+                    </label>
+                    <select id="role" name="role" required>
+                        <option value="">请选择角色</option>
+                        <option value="student">学生</option>
+                        <option value="teacher">教师</option>
+                        <option value="admin">管理员</option>
+                    </select>
+                </div>
+                
+                <div class="form-group">
+                    <button type="submit" class="btn btn-primary">
+                        <i class="fas fa-sign-in-alt"></i> 登录
+                    </button>
+                </div>
+                
+                <div class="auth-footer">
+                    <p>没有账户？ <a href="register.html">立即注册</a></p>
+                </div>
+            </form>
+        </div>
+        
+    <script src="../js/auth.js"></script>
+</body>
+</html>
--- a/frontend/html/register.html
+++ b/frontend/html/register.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>学生成绩管理系统 - 注册</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
+</head>
+<body>
+    <div class="auth-container">
+        <div class="auth-header">
+            <h1><i class="fas fa-graduation-cap"></i> 学生成绩管理系统</h1>
+            <p>创建新账户</p>
+        </div>
+        
+        <div class="auth-card">
+            <form id="registerForm">
+                <div class="form-group">
+                    <label for="id">
+                        <i class="fas fa-id-card"></i> 学号/工号
+                    </label>
+                    <input type="text" id="id" name="id" required 
+                           placeholder="请输入学号或工号">
+                </div>
+                
+                <div class="form-group">
+                    <label for="name">
+                        <i class="fas fa-user"></i> 姓名
+                    </label>
+                    <input type="text" id="name" name="name" required 
+                           placeholder="请输入姓名">
+                </div>
+                
+                <div class="form-group">
+                    <label for="password">
+                        <i class="fas fa-lock"></i> 密码
+                    </label>
+                    <input type="password" id="password" name="password" required 
+                           placeholder="请输入密码">
+                </div>
+                
+                <div class="form-group">
+                    <label for="confirmPassword">
+                        <i class="fas fa-lock"></i> 确认密码
+                    </label>
+                    <input type="password" id="confirmPassword" name="confirmPassword" required 
+                           placeholder="请再次输入密码">
+                </div>
+                
+                <div class="form-group">
+                    <label for="role">
+                        <i class="fas fa-user-tag"></i> 角色
+                    </label>
+                    <select id="role" name="role" required>
+                        <option value="">请选择角色</option>
+                        <option value="student">学生</option>
+                        <option value="teacher">教师</option>
+                        <option value="admin">管理员</option>
+                    </select>
+                </div>
+                
+                <div class="form-group" id="classField" style="display: none;">
+                    <label for="class">
+                        <i class="fas fa-users"></i> 班级
+                    </label>
+                    <input type="text" id="class" name="class" 
+                           placeholder="请输入班级（学生/教师必填）">
+                </div>
+                
+                <div class="form-group">
+                    <button type="submit" class="btn btn-primary">
+                        <i class="fas fa-user-plus"></i> 注册
+                    </button>
+                </div>
+                
+                <div class="auth-footer">
+                    <p>已有账户？ <a href="login.html">立即登录</a></p>
+                </div>
+            </form>
+        </div>
+        
+    <script src="../js/auth.js"></script>
+    <script>
+        // 显示/隐藏班级字段
+        document.getElementById('role').addEventListener('change', function() {
+            const role = this.value;
+            const classField = document.getElementById('classField');
+            const classInput = document.getElementById('class');
+            
+            if (role === 'student' || role === 'teacher') {
+                classField.style.display = 'block';
+                classInput.required = true;
+            } else {
+                classField.style.display = 'none';
+                classInput.required = false;
+            }
+        });
+        
+        // 初始化AuthManager
+        document.addEventListener('DOMContentLoaded', () => {
+            new AuthManager();
+        });
+    </script>
+</body>
+</html>
--- a/frontend/html/student_dashboard.html
+++ b/frontend/html/student_dashboard.html
@@ -0,0 +1,195 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>学生成绩管理系统 - 学生仪表板</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
+</head>
+</head>
+<body>
+    <!-- 顶部导航栏 -->
+    <nav class="navbar">
+        <div class="navbar-brand">
+            <i class="fas fa-graduation-cap"></i>
+            <span>XX学校成绩管理系统</span>
+        </div>
+        <div class="navbar-menu">
+            <a href="index.html" class="btn btn-secondary">
+                <i class="fas fa-home"></i> 主页
+            </a>
+            <div class="navbar-user">
+                <span class="user-name" id="userName">加载中...</span>
+                <button id="logoutBtn" class="btn btn-primary">
+                    <i class="fas fa-sign-out-alt"></i> 退出
+                </button>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 仪表板容器 -->
+    <div class="dashboard-container">
+        <!-- 左侧侧边栏 -->
+        <aside class="sidebar">
+            <div class="sidebar-header">
+                <div class="user-info">
+                    <div class="user-avatar">
+                        <i class="fas fa-user-graduate"></i>
+                    </div>
+                    <div class="user-details">
+                    <h3 id="studentName">加载中...</h3>
+                    <p>学生 | 班级：<span id="studentClass">加载中...</span></p>
+                </div>
+                </div>
+            </div>
+
+            <ul class="sidebar-menu">
+                <li>
+                    <a href="#" class="active">
+                        <i class="fas fa-tachometer-alt"></i>
+                        <span>仪表板</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="#">
+                        <i class="fas fa-chart-bar"></i>
+                        <span>成绩查询</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="#">
+                        <i class="fas fa-book"></i>
+                        <span>课程详情</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="#">
+                        <i class="fas fa-user"></i>
+                        <span>个人信息</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="#">
+                        <i class="fas fa-chart-line"></i>
+                        <span>成绩分析</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="#">
+                        <i class="fas fa-download"></i>
+                        <span>成绩导出</span>
+                    </a>
+                </li>
+            </ul>
+        </aside>
+
+        <!-- 主内容区 -->
+        <main class="main-content">
+            <div class="content-header">
+                <div>
+                    <h1 class="page-title">学生仪表板</h1>
+                    <div class="breadcrumb">
+                        <a href="index.html">主页</a>
+                        <i class="fas fa-chevron-right"></i>
+                        <span>学生仪表板</span>
+                    </div>
+                </div>
+                <div class="current-time" id="currentTime"></div>
+            </div>
+
+            <!-- 统计卡片 -->
+            <div class="stats-grid">
+                <div class="stat-card">
+                    <div class="stat-icon gpa">
+                        <i class="fas fa-star"></i>
+                    </div>
+                    <div class="stat-value" id="gpaValue">3.75</div>
+                    <div class="stat-label">平均绩点</div>
+                </div>
+
+                <div class="stat-card">
+                    <div class="stat-icon courses">
+                        <i class="fas fa-book"></i>
+                    </div>
+                    <div class="stat-value" id="courseCount">8</div>
+                    <div class="stat-label">已修课程</div>
+                </div>
+
+                <div class="stat-card">
+                    <div class="stat-icon credits">
+                        <i class="fas fa-certificate"></i>
+                    </div>
+                    <div class="stat-value" id="creditTotal">24</div>
+                    <div class="stat-label">总学分</div>
+                </div>
+
+                <div class="stat-card">
+                    <div class="stat-icon ranking">
+                        <i class="fas fa-trophy"></i>
+                    </div>
+                    <div class="stat-value" id="classRank">5</div>
+                    <div class="stat-label">班级排名</div>
+                </div>
+            </div>
+
+            <!-- 成绩表格 -->
+            <div class="grades-table">
+                <div class="table-header">
+                    <h2 class="table-title">本学期成绩</h2>
+                    <div class="table-actions">
+                        <select class="form-select" style="width: 150px;">
+                            <option value="all">所有学期</option>
+                            <option value="2023-2" selected>2023-2024学年第二学期</option>
+                            <option value="2023-1">2023-2024学年第一学期</option>
+                        </select>
+                        <button class="btn btn-primary">
+                            <i class="fas fa-download"></i> 导出成绩单
+                        </button>
+                    </div>
+                </div>
+
+                <div class="table-container">
+                    <table>
+                        <thead>
+                            <tr>
+                                <th>课程名称</th>
+                                <th>课程代码</th>
+                                <th>学分</th>
+                                <th>平时成绩</th>
+                                <th>期末成绩</th>
+                                <th>总成绩</th>
+                                <th>绩点</th>
+                                <th>操作</th>
+                            </tr>
+                        </thead>
+                        <tbody id="gradesTableBody">
+                            <!-- 成绩数据将通过JavaScript动态加载 -->
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </main>
+    </div>
+
+    <script src="../js/student.js"></script>
+    <script src="../js/auth.js"></script>
+    <script>
+        // 更新当前时间
+        function updateCurrentTime() {
+            const now = new Date();
+            const options = { 
+                year: 'numeric', 
+                month: 'long', 
+                day: 'numeric',
+                hour: '2-digit',
+                minute: '2-digit',
+                second: '2-digit'
+            };
+            document.getElementById('currentTime').textContent = now.toLocaleString('zh-CN', options);
+        }
+        setInterval(updateCurrentTime, 1000);
+        updateCurrentTime();
+    </script>
+</body>
+</html>
--- a/frontend/html/student_management.html
+++ b/frontend/html/student_management.html
@@ -0,0 +1,451 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>学生管理 - XX学校成绩管理系统</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
+
+</head>
+<body>
+    <!-- 导航栏 -->
+    <nav class="navbar">
+        <div class="container">
+            <div class="navbar-brand">
+                <a href="index.html">
+                    <i class="fas fa-graduation-cap"></i>
+                    <span>XX学校成绩管理系统</span>
+                </a>
+            </div>
+            <div class="navbar-menu">
+                <a href="index.html" class="navbar-item">
+                    <i class="fas fa-home"></i>
+                    <span>主页</span>
+                </a>
+                <a href="admin_dashboard.html" class="navbar-item">
+                    <i class="fas fa-tachometer-alt"></i>
+                    <span>控制面板</span>
+                </a>
+                <a href="student_management.html" class="navbar-item active">
+                    <i class="fas fa-users"></i>
+                    <span>学生管理</span>
+                </a>
+                <a href="grade_management.html" class="navbar-item">
+                    <i class="fas fa-chart-bar"></i>
+                    <span>成绩管理</span>
+                </a>
+                <a href="user_management.html" class="navbar-item">
+                    <i class="fas fa-user-cog"></i>
+                    <span>用户管理</span>
+                </a>
+                <div class="navbar-user">
+                    <i class="fas fa-user-circle"></i>
+                    <span>管理员</span>
+                    <div class="user-dropdown">
+                        <a href="#"><i class="fas fa-user"></i> 个人资料</a>
+                        <a href="#"><i class="fas fa-cog"></i> 设置</a>
+                        <a href="login.html"><i class="fas fa-sign-out-alt"></i> 退出登录</a>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 主要内容区 -->
+    <main class="main-content">
+        <div class="container">
+            <div class="student-management">
+                <!-- 页面标题 -->
+                <div class="page-header">
+                    <h1><i class="fas fa-users"></i> 学生管理</h1>
+                    <p>管理学生基本信息，支持添加、编辑、删除和查询学生信息</p>
+                </div>
+                
+                <!-- 筛选区域 -->
+                <div class="filter-section">
+                    <div class="filter-row">
+                        <div class="filter-group">
+                            <label for="student-id"><i class="fas fa-id-card"></i> 学号</label>
+                            <input type="text" id="student-id" placeholder="请输入学号">
+                        </div>
+                        <div class="filter-group">
+                            <label for="student-name"><i class="fas fa-user"></i> 姓名</label>
+                            <input type="text" id="student-name" placeholder="请输入姓名">
+                        </div>
+                        <div class="filter-group">
+                            <label for="class-select"><i class="fas fa-school"></i> 班级</label>
+                            <select id="class-select">
+                                <option value="">全部班级</option>
+                                <option value="计算机科学与技术1班">计算机科学与技术1班</option>
+                                <option value="计算机科学与技术2班">计算机科学与技术2班</option>
+                                <option value="软件工程1班">软件工程1班</option>
+                                <option value="软件工程2班">软件工程2班</option>
+                                <option value="网络工程1班">网络工程1班</option>
+                                <option value="网络工程2班">网络工程2班</option>
+                            </select>
+                        </div>
+                        <div class="filter-group">
+                            <label for="gender-select"><i class="fas fa-venus-mars"></i> 性别</label>
+                            <select id="gender-select">
+                                <option value="">全部性别</option>
+                                <option value="男">男</option>
+                                <option value="女">女</option>
+                            </select>
+                        </div>
+                    </div>
+                    
+                    <div class="action-buttons">
+                        <button id="add-btn" class="btn-add">
+                            <i class="fas fa-plus"></i>
+                            添加学生
+                        </button>
+                        <button id="search-btn" class="btn-search">
+                            <i class="fas fa-search"></i>
+                            查询学生
+                        </button>
+                        <button id="reset-btn" class="btn-reset">
+                            <i class="fas fa-redo"></i>
+                            重置条件
+                        </button>
+                        <button id="export-btn" class="btn-export">
+                            <i class="fas fa-file-export"></i>
+                            导出数据
+                        </button>
+                    </div>
+                </div>
+                
+                <!-- 学生表格 -->
+                <div class="table-responsive">
+                    <table class="student-table">
+                        <thead>
+                            <tr>
+                                <th>学号</th>
+                                <th>姓名</th>
+                                <th>性别</th>
+                                <th>班级</th>
+                                <th>联系电话</th>
+                                <th>邮箱</th>
+                                <th>入学时间</th>
+                                <th>操作</th>
+                            </tr>
+                        </thead>
+                        <tbody id="student-table-body">
+                            <!-- 数据将通过JavaScript动态加载 -->
+                            <tr>
+                                <td colspan="8" class="loading">
+                                    <i class="fas fa-spinner fa-spin"></i>
+                                    <p>正在加载学生数据...</p>
+                                </td>
+                            </tr>
+                        </tbody>
+                    </table>
+                </div>
+                
+                <!-- 分页控件 -->
+                <div class="pagination" id="pagination">
+                    <button id="prev-btn" disabled>
+                        <i class="fas fa-chevron-left"></i>
+                        上一页
+                    </button>
+                    <button class="active">1</button>
+                    <button>2</button>
+                    <button>3</button>
+                    <button id="next-btn">
+                        下一页
+                        <i class="fas fa-chevron-right"></i>
+                    </button>
+                </div>
+            </div>
+        </div>
+    </main>
+
+    <!-- 页脚 -->
+    <footer class="footer">
+        <div class="container">
+            <p>© 2023 XX学校成绩管理系统. 版权所有.</p>
+            <p>技术支持: 计算机科学与技术学院</p>
+        </div>
+    </footer>
+
+    <script>
+        // 模拟学生数据
+        const mockStudents = [
+            {
+                id: '20230001',
+                name: '张三',
+                gender: '男',
+                class: '计算机科学与技术1班',
+                phone: '13800138001',
+                email: 'zhangsan@example.com',
+                enrollmentDate: '2023-09-01'
+            },
+            {
+                id: '20230002',
+                name: '李四',
+                gender: '女',
+                class: '计算机科学与技术1班',
+                phone: '13800138002',
+                email: 'lisi@example.com',
+                enrollmentDate: '2023-09-01'
+            },
+            {
+                id: '20230003',
+                name: '王五',
+                gender: '男',
+                class: '计算机科学与技术2班',
+                phone: '13800138003',
+                email: 'wangwu@example.com',
+                enrollmentDate: '2023-09-01'
+            },
+            {
+                id: '20230004',
+                name: '赵六',
+                gender: '女',
+                class: '软件工程1班',
+                phone: '13800138004',
+                email: 'zhaoliu@example.com',
+                enrollmentDate: '2023-09-01'
+            },
+            {
+                id: '20230005',
+                name: '钱七',
+                gender: '男',
+                class: '软件工程2班',
+                phone: '13800138005',
+                email: 'qianqi@example.com',
+                enrollmentDate: '2023-09-01'
+            },
+            {
+                id: '20230006',
+                name: '孙八',
+                gender: '男',
+                class: '网络工程1班',
+                phone: '13800138006',
+                email: 'sunba@example.com',
+                enrollmentDate: '2023-09-01'
+            },
+            {
+                id: '20230007',
+                name: '周九',
+                gender: '女',
+                class: '网络工程2班',
+                phone: '13800138007',
+                email: 'zhoujiu@example.com',
+                enrollmentDate: '2023-09-01'
+            },
+            {
+                id: '20230008',
+                name: '吴十',
+                gender: '男',
+                class: '计算机科学与技术1班',
+                phone: '13800138008',
+                email: 'wushi@example.com',
+                enrollmentDate: '2023-09-01'
+            }
+        ];
+
+        // 当前页数据
+        let currentPage = 1;
+        const pageSize = 5;
+        let filteredStudents = [...mockStudents];
+
+        // DOM元素
+        const studentTableBody = document.getElementById('student-table-body');
+        const pagination = document.getElementById('pagination');
+        const prevBtn = document.getElementById('prev-btn');
+        const nextBtn = document.getElementById('next-btn');
+        const searchBtn = document.getElementById('search-btn');
+        const resetBtn = document.getElementById('reset-btn');
+        const addBtn = document.getElementById('add-btn');
+        const exportBtn = document.getElementById('export-btn');
+
+        // 渲染学生表格
+        function renderStudentTable() {
+            const startIndex = (currentPage - 1) * pageSize;
+            const endIndex = startIndex + pageSize;
+            const pageStudents = filteredStudents.slice(startIndex, endIndex);
+
+            if (pageStudents.length === 0) {
+                studentTableBody.innerHTML = `
+                    <tr>
+                        <td colspan="8" class="no-results">
+                            <i class="fas fa-user-slash"></i>
+                            <h3>没有找到学生信息</h3>
+                            <p>请尝试调整筛选条件或添加新学生</p>
+                        </td>
+                    </tr>
+                `;
+                return;
+            }
+
+            let tableHTML = '';
+            pageStudents.forEach(student => {
+                tableHTML += `
+                    <tr>
+                        <td>${student.id}</td>
+                        <td>${student.name}</td>
+                        <td>${student.gender}</td>
+                        <td>${student.class}</td>
+                        <td>${student.phone}</td>
+                        <td>${student.email}</td>
+                        <td>${student.enrollmentDate}</td>
+                        <td>
+                            <div class="action-buttons-cell">
+                                <button class="btn-edit" onclick="editStudent('${student.id}')">
+                                    <i class="fas fa-edit"></i>
+                                    编辑
+                                </button>
+                                <button class="btn-delete" onclick="deleteStudent('${student.id}')">
+                                    <i class="fas fa-trash"></i>
+                                    删除
+                                </button>
+                            </div>
+                        </td>
+                    </tr>
+                `;
+            });
+
+            studentTableBody.innerHTML = tableHTML;
+        }
+
+        // 更新分页控件
+        function updatePagination() {
+            const totalPages = Math.ceil(filteredStudents.length / pageSize);
+            const paginationButtons = pagination.querySelectorAll('button:not(#prev-btn):not(#next-btn)');
+            
+            // 更新页码按钮
+            paginationButtons.forEach((btn, index) => {
+                if (index < totalPages) {
+                    btn.textContent = index + 1;
+                    btn.style.display = 'inline-block';
+                    btn.classList.toggle('active', index + 1 === currentPage);
+                } else {
+                    btn.style.display = 'none';
+                }
+            });
+
+            // 更新上一页/下一页按钮状态
+            prevBtn.disabled = currentPage === 1;
+            nextBtn.disabled = currentPage === totalPages || totalPages === 0;
+        }
+
+        // 筛选学生
+        function filterStudents() {
+            const studentId = document.getElementById('student-id').value.trim();
+            const studentName = document.getElementById('student-name').value.trim();
+            const selectedClass = document.getElementById('class-select').value;
+            const selectedGender = document.getElementById('gender-select').value;
+
+            filteredStudents = mockStudents.filter(student => {
+                const matchesId = !studentId || student.id.includes(studentId);
+                const matchesName = !studentName || student.name.includes(studentName);
+                const matchesClass = !selectedClass || student.class === selectedClass;
+                const matchesGender = !selectedGender || student.gender === selectedGender;
+
+                return matchesId && matchesName && matchesClass && matchesGender;
+            });
+
+            currentPage = 1;
+            renderStudentTable();
+            updatePagination();
+        }
+
+        // 重置筛选条件
+        function resetFilters() {
+            document.getElementById('student-id').value = '';
+            document.getElementById('student-name').value = '';
+            document.getElementById('class-select').value = '';
+            document.getElementById('gender-select').value = '';
+            
+            filteredStudents = [...mockStudents];
+            currentPage = 1;
+            renderStudentTable();
+            updatePagination();
+        }
+
+        // 添加学生
+        function addStudent() {
+            alert('添加学生功能将在后端API完成后实现');
+            // 这里可以打开一个模态框来添加学生信息
+        }
+
+        // 编辑学生
+        function editStudent(studentId) {
+            alert(`编辑学生 ${studentId} 功能将在后端API完成后实现`);
+            // 这里可以打开一个模态框来编辑学生信息
+        }
+
+        // 删除学生
+        function deleteStudent(studentId) {
+            if (confirm(`确定要删除学号为 ${studentId} 的学生吗？`)) {
+                alert(`删除学生 ${studentId} 功能将在后端API完成后实现`);
+                // 这里可以调用API删除学生
+            }
+        }
+
+        // 导出数据
+        function exportData() {
+            alert('导出数据功能将在后端API完成后实现');
+            // 这里可以调用API导出Excel或CSV文件
+        }
+
+        // 页面切换
+        function goToPage(page) {
+            currentPage = page;
+            renderStudentTable();
+            updatePagination();
+        }
+
+        // 初始化事件监听
+        function initEventListeners() {
+            searchBtn.addEventListener('click', filterStudents);
+            resetBtn.addEventListener('click', resetFilters);
+            addBtn.addEventListener('click', addStudent);
+            exportBtn.addEventListener('click', exportData);
+            
+            prevBtn.addEventListener('click', () => {
+                if (currentPage > 1) {
+                    goToPage(currentPage - 1);
+                }
+            });
+            
+            nextBtn.addEventListener('click', () => {
+                const totalPages = Math.ceil(filteredStudents.length / pageSize);
+                if (currentPage < totalPages) {
+                    goToPage(currentPage + 1);
+                }
+            });
+            
+            // 页码按钮点击事件
+            pagination.addEventListener('click', (e) => {
+                if (e.target.tagName === 'BUTTON' && 
+                    !e.target.id && 
+                    !e.target.classList.contains('active')) {
+                    const page = parseInt(e.target.textContent);
+                    goToPage(page);
+                }
+            });
+            
+            // 输入框回车搜索
+            document.getElementById('student-id').addEventListener('keypress', (e) => {
+                if (e.key === 'Enter') filterStudents();
+            });
+            
+            document.getElementById('student-name').addEventListener('keypress', (e) => {
+                if (e.key === 'Enter') filterStudents();
+            });
+        }
+
+        // 页面加载完成后初始化
+        document.addEventListener('DOMContentLoaded', () => {
+            // 模拟API延迟加载
+            setTimeout(() => {
+                renderStudentTable();
+                updatePagination();
+                initEventListeners();
+            }, 500);
+        });
+    </script>
+</body>
+</html>
--- a/frontend/html/teacher_dashboard.html
+++ b/frontend/html/teacher_dashboard.html
@@ -0,0 +1,515 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>学生成绩管理系统 - 教师仪表板</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
+</head>
+        /* 仪表板布局 */
+        .dashboard-container {
+            display: flex;
+            min-height: calc(100vh - 80px);
+        }
+
+        /* 侧边栏 */
+        .sidebar {
+            width: 250px;
+            background: linear-gradient(180deg, #43e97b 0%, #38f9d7 100%);
+            color: white;
+            padding: 30px 0;
+            position: sticky;
+            top: 80px;
+            height: calc(100vh - 80px);
+            overflow-y: auto;
+        }
+
+        .sidebar-header {
+            padding: 0 25px 30px;
+            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
+            margin-bottom: 20px;
+        }
+
+        .user-info {
+            display: flex;
+            align-items: center;
+            gap: 15px;
+        }
+
+        .user-avatar {
+            width: 50px;
+            height: 50px;
+            border-radius: 50%;
+            background: white;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            color: #43e97b;
+            font-size: 20px;
+        }
+
+        .user-details h3 {
+            margin: 0 0 5px;
+            font-size: 1.1rem;
+        }
+
+        .user-details p {
+            margin: 0;
+            font-size: 0.9rem;
+            opacity: 0.8;
+        }
+
+        .sidebar-menu {
+            list-style: none;
+            padding: 0;
+            margin: 0;
+        }
+
+        .sidebar-menu li {
+            margin: 5px 0;
+        }
+
+        .sidebar-menu a {
+            display: flex;
+            align-items: center;
+            gap: 15px;
+            padding: 15px 25px;
+            color: white;
+            text-decoration: none;
+            transition: all 0.3s ease;
+            border-left: 3px solid transparent;
+        }
+
+        .sidebar-menu a:hover {
+            background: rgba(255, 255, 255, 0.1);
+            border-left-color: white;
+        }
+
+        .sidebar-menu a.active {
+            background: rgba(255, 255, 255, 0.2);
+            border-left-color: white;
+        }
+
+        .sidebar-menu i {
+            width: 20px;
+            text-align: center;
+        }
+
+        /* 主内容区 */
+        .main-content {
+            flex: 1;
+            padding: 30px;
+            background: #f8f9ff;
+        }
+
+        .content-header {
+            display: flex;
+            justify-content: space-between;
+            align-items: center;
+            margin-bottom: 30px;
+        }
+
+        .page-title {
+            font-size: 1.8rem;
+            color: #333;
+            margin: 0;
+        }
+
+        .breadcrumb {
+            display: flex;
+            align-items: center;
+            gap: 10px;
+            color: #666;
+            font-size: 0.9rem;
+        }
+
+        .breadcrumb a {
+            color: #43e97b;
+            text-decoration: none;
+        }
+
+        .breadcrumb i {
+            font-size: 0.8rem;
+        }
+
+        /* 功能卡片 */
+        .function-grid {
+            display: grid;
+            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
+            gap: 25px;
+            margin-bottom: 40px;
+        }
+
+        .function-card {
+            background: white;
+            border-radius: 15px;
+            padding: 30px;
+            text-align: center;
+            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
+            transition: all 0.3s ease;
+            cursor: pointer;
+            border: 2px solid transparent;
+        }
+
+        .function-card:hover {
+            transform: translateY(-5px);
+            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
+            border-color: #43e97b;
+        }
+
+        .function-icon {
+            width: 80px;
+            height: 80px;
+            border-radius: 50%;
+            background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            margin: 0 auto 20px;
+            font-size: 32px;
+            color: white;
+        }
+
+        .function-title {
+            font-size: 1.3rem;
+            color: #333;
+            margin-bottom: 10px;
+        }
+
+        .function-description {
+            color: #666;
+            line-height: 1.5;
+            margin-bottom: 20px;
+        }
+
+        /* 快速操作 */
+        .quick-actions {
+            background: white;
+            border-radius: 15px;
+            padding: 25px;
+            margin-bottom: 30px;
+            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
+        }
+
+        .section-title {
+            font-size: 1.4rem;
+            color: #333;
+            margin-bottom: 20px;
+            display: flex;
+            align-items: center;
+            gap: 10px;
+        }
+
+        .section-title i {
+            color: #43e97b;
+        }
+
+        .action-buttons {
+            display: flex;
+            gap: 15px;
+            flex-wrap: wrap;
+        }
+
+        .action-btn {
+            padding: 12px 25px;
+            background: #f8f9ff;
+            border: 1px solid #e0e0e0;
+            border-radius: 10px;
+            color: #333;
+            text-decoration: none;
+            display: flex;
+            align-items: center;
+            gap: 10px;
+            transition: all 0.3s ease;
+        }
+
+        .action-btn:hover {
+            background: #43e97b;
+            color: white;
+            border-color: #43e97b;
+        }
+
+        /* 最近活动 */
+        .recent-activities {
+            background: white;
+            border-radius: 15px;
+            padding: 25px;
+            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
+        }
+
+        .activity-list {
+            list-style: none;
+            padding: 0;
+            margin: 0;
+        }
+
+        .activity-item {
+            display: flex;
+            align-items: center;
+            gap: 15px;
+            padding: 15px 0;
+            border-bottom: 1px solid #eee;
+        }
+
+        .activity-item:last-child {
+            border-bottom: none;
+        }
+
+        .activity-icon {
+            width: 40px;
+            height: 40px;
+            border-radius: 50%;
+            background: #f8f9ff;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            color: #43e97b;
+        }
+
+        .activity-content {
+            flex: 1;
+        }
+
+        .activity-title {
+            font-weight: 600;
+            color: #333;
+            margin-bottom: 5px;
+        }
+
+        .activity-time {
+            font-size: 0.9rem;
+            color: #999;
+        }
+
+        /* 响应式设计 */
+        @media (max-width: 992px) {
+            .dashboard-container {
+                flex-direction: column;
+            }
+
+            .sidebar {
+                width: 100%;
+                height: auto;
+                position: static;
+                padding: 20px 0;
+            }
+
+            .sidebar-menu {
+                display: flex;
+                overflow-x: auto;
+                padding: 0 20px;
+            }
+
+            .sidebar-menu li {
+                flex-shrink: 0;
+            }
+
+            .sidebar-menu a {
+                padding: 10px 15px;
+                border-left: none;
+                border-bottom: 3px solid transparent;
+            }
+
+            .sidebar-menu a:hover,
+            .sidebar-menu a.active {
+                border-left-color: transparent;
+                border-bottom-color: white;
+            }
+        }
+
+        @media (max-width: 768px) {
+            .main-content {
+                padding: 20px;
+            }
+
+            .content-header {
+                flex-direction: column;
+                align-items: flex-start;
+                gap: 15px;
+            }
+
+            .function-grid {
+                grid-template-columns: 1fr;
+            }
+
+            .action-buttons {
+                flex-direction: column;
+            }
+
+            .action-btn {
+                justify-content: center;
+            }
+        }
+    </style>
+</head>
+<body>
+    <!-- 顶部导航栏 -->
+    <nav class="navbar">
+        <div class="navbar-brand">
+            <i class="fas fa-graduation-cap"></i>
+            <span>XX学校成绩管理系统</span>
+        </div>
+        <div class="navbar-menu">
+            <a href="index.html" class="btn btn-secondary">
+                <i class="fas fa-home"></i> 主页
+            </a>
+            <div class="navbar-user">
+                <span class="user-name" id="userName">李老师</span>
+                <button id="logoutBtn" class="btn btn-primary">
+                    <i class="fas fa-sign-out-alt"></i> 退出
+                </button>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 仪表板容器 -->
+    <div class="dashboard-container">
+        <!-- 左侧侧边栏 -->
+        <aside class="sidebar">
+            <div class="sidebar-header">
+                <div class="user-info">
+                    <div class="user-avatar">
+                        <i class="fas fa-chalkboard-teacher"></i>
+                    </div>
+                    <div class="user-details">
+                        <h3 id="teacherName">李老师</h3>
+                        <p>教师 | 部门：<span id="teacherDept">计算机学院</span></p>
+                    </div>
+                </div>
+            </div>
+
+            <ul class="sidebar-menu">
+                <li>
+                    <a href="#" class="active">
+                        <i class="fas fa-tachometer-alt"></i>
+                        <span>仪表板</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="grade_entry.html">
+                        <i class="fas fa-edit"></i>
+                        <span>成绩录入</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="grade_query.html">
+                        <i class="fas fa-search"></i>
+                        <span>成绩查询</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="grade_manage.html">
+                        <i class="fas fa-cog"></i>
+                        <span>成绩管理</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="#">
+                        <i class="fas fa-chart-bar"></i>
+                        <span>统计分析</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="#">
+                        <i class="fas fa-download"></i>
+                        <span>数据导出</span>
+                    </a>
+                </li>
+                <li>
+                    <a href="#">
+                        <i class="fas fa-user"></i>
+                        <span>个人信息</span>
+                    </a>
+                </li>
+            </ul>
+        </aside>
+
+        <!-- 主内容区 -->
+        <main class="main-content">
+            <div class="content-header">
+                <div>
+                    <h1 class="page-title">教师仪表板</h1>
+                    <div class="breadcrumb">
+                        <a href="index.html">主页</a>
+                        <i class="fas fa-chevron-right"></i>
+                        <span>教师仪表板</span>
+                    </div>
+                </div>
+                <div class="current-time" id="currentTime"></div>
+            </div>
+
+            <!-- 功能卡片 -->
+            <div class="function-grid">
+                <div class="function-card" onclick="window.location.href='grade_entry.html'">
+                    <div class="function-icon">
+                        <i class="fas fa-edit"></i>
+                    </div>
+                    <h3 class="function-title">成绩录入</h3>
+                    <p class="function-description">
+                        为学生录入新的课程成绩，支持批量导入和单个录入。
+                    </p>
+                    <button class="btn btn-primary">开始录入</button>
+                </div>
+
+                <div class="function-card" onclick="window.location.href='grade_query.html'">
+                    <div class="function-icon">
+                        <i class="fas fa-search"></i>
+                    </div>
+                    <h3 class="function-title">成绩查询</h3>
+                    <p class="function-description">
+                        查询学生成绩，支持按班级、课程、学期等多维度筛选。
+                    </p>
+                    <button class="btn btn-primary">开始查询</button>
+                </div>
+
+                <div class="function-card" onclick="window.location.href='grade_manage.html'">
+                    <div class="function-icon">
+                        <i class="fas fa-cog"></i>
+                    </div>
+                    <h3 class="function-title">成绩管理</h3>
+                    <p class="function-description">
+                        修改或删除已录入的成绩，管理成绩记录和状态。
+                    </p>
+                    <button class="btn btn-primary">开始管理</button>
+                </div>
+
+                <div class="function-card" onclick="window.location.href='#'">
+                    <div class="function-icon">
+                        <i class="fas fa-chart-bar"></i>
+                    </div>
+                    <h3 class="function-title">统计分析</h3>
+                    <p class="function-description">
+                        查看成绩统计图表，分析教学效果和学生表现。
+                    </p>
+                    <button class="btn btn-primary">查看统计</button>
+                </div>
+            </div>
+
+            <!-- 快速操作 -->
+            <div class="quick-actions">
+                <h2 class="section-title">
+                    <i class="fas fa-bolt"></i>
+                    快速操作
+                </h2>
+                <div class="action-buttons">
+                    <a href="grade_entry.html" class="action-btn">
+                        <i class="fas fa-plus"></i>
+                        录入新成绩
+                    </a>
+                    <a href="grade_query.html" class="action-btn">
+                        <i class="fas fa-search"></i>
+                        查询成绩
+                    </a>
+                    <a href="#" class="action-btn">
+                        <i class="fas fa-download"></i>
+                        导出成绩单
+                    </a>
+                    <a href="#" class="action-btn">
+                        <i class="fas fa-chart-pie"></i>
+                        生成统计报告
+                    </a>
+                </div>
+            </div>
+
+            <!-- 最近活动
--- a/frontend/html/user_management.html
+++ b/frontend/html/user_management.html
@@ -0,0 +1,509 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>用户管理 - XX学校成绩管理系统</title>
+    <link rel="stylesheet" href="../css/style.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
+
+</head>
+<body>
+    <!-- 导航栏 -->
+    <nav class="navbar">
+        <div class="container">
+            <div class="navbar-brand">
+                <a href="index.html">
+                    <i class="fas fa-graduation-cap"></i>
+                    <span>XX学校成绩管理系统</span>
+                </a>
+            </div>
+            <div class="navbar-menu">
+                <div class="navbar-start">
+                    <a href="admin_dashboard.html" class="navbar-item">
+                        <i class="fas fa-tachometer-alt"></i>
+                        <span>仪表板</span>
+                    </a>
+                    <a href="user_management.html" class="navbar-item active">
+                        <i class="fas fa-users"></i>
+                        <span>用户管理</span>
+                    </a>
+                    <a href="student_management.html" class="navbar-item">
+                        <i class="fas fa-user-graduate"></i>
+                        <span>学生管理</span>
+                    </a>
+                    <a href="grade_management.html" class="navbar-item">
+                        <i class="fas fa-chart-bar"></i>
+                        <span>成绩统计</span>
+                    </a>
+                </div>
+                <div class="navbar-end">
+                    <div class="navbar-item user-info">
+                        <i class="fas fa-user-circle"></i>
+                        <span>管理员</span>
+                        <div class="dropdown">
+                            <a href="#" class="dropdown-toggle">
+                                <i class="fas fa-caret-down"></i>
+                            </a>
+                            <div class="dropdown-menu">
+                                <a href="admin_dashboard.html" class="dropdown-item">
+                                    <i class="fas fa-tachometer-alt"></i>
+                                    仪表板
+                                </a>
+                                <a href="#" class="dropdown-item">
+                                    <i class="fas fa-cog"></i>
+                                    系统设置
+                                </a>
+                                <div class="dropdown-divider"></div>
+                                <a href="index.html" class="dropdown-item">
+                                    <i class="fas fa-sign-out-alt"></i>
+                                    退出登录
+                                </a>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 主内容区 -->
+    <main class="main-content">
+        <div class="container">
+            <div class="user-management">
+                <!-- 页面标题和面包屑导航 -->
+                <div class="page-header">
+                    <h1>用户管理</h1>
+                    <div class="breadcrumb">
+                        <a href="index.html">主页</a> &gt; 
+                        <a href="admin_dashboard.html">管理员仪表板</a> &gt; 
+                        <span>用户管理</span>
+                    </div>
+                </div>
+
+                <!-- 筛选区域 -->
+                <div class="filter-section">
+                    <form class="filter-form" id="filter-form">
+                        <div class="filter-group">
+                            <label for="user-id">用户ID</label>
+                            <input type="text" id="user-id" placeholder="请输入用户ID">
+                        </div>
+                        <div class="filter-group">
+                            <label for="user-name">姓名</label>
+                            <input type="text" id="user-name" placeholder="请输入姓名">
+                        </div>
+                        <div class="filter-group">
+                            <label for="role-select">角色</label>
+                            <select id="role-select">
+                                <option value="">全部角色</option>
+                                <option value="admin">管理员</option>
+                                <option value="teacher">教师</option>
+                                <option value="student">学生</option>
+                            </select>
+                        </div>
+                        <div class="filter-group">
+                            <label for="class-select">班级</label>
+                            <select id="class-select">
+                                <option value="">全部班级</option>
+                                <option value="计算机科学与技术1班">计算机科学与技术1班</option>
+                                <option value="计算机科学与技术2班">计算机科学与技术2班</option>
+                                <option value="软件工程1班">软件工程1班</option>
+                                <option value="软件工程2班">软件工程2班</option>
+                                <option value="网络工程1班">网络工程1班</option>
+                                <option value="网络工程2班">网络工程2班</option>
+                            </select>
+                        </div>
+                        <div class="filter-actions">
+                            <button type="button" class="btn-add" id="add-btn">
+                                <i class="fas fa-plus"></i>
+                                添加用户
+                            </button>
+                            <button type="button" class="btn-search" id="search-btn">
+                                <i class="fas fa-search"></i>
+                                查询
+                            </button>
+                            <button type="button" class="btn-reset" id="reset-btn">
+                                <i class="fas fa-redo"></i>
+                                重置
+                            </button>
+                            <button type="button" class="btn-export" id="export-btn">
+                                <i class="fas fa-file-export"></i>
+                                导出
+                            </button>
+                        </div>
+                    </form>
+                </div>
+
+                <!-- 结果区域 -->
+                <div class="table-container">
+                    <table class="user-table">
+                        <thead>
+                            <tr>
+                                <th>用户ID</th>
+                                <th>姓名</th>
+                                <th>角色</th>
+                                <th>班级</th>
+                                <th>联系电话</th>
+                                <th>邮箱</th>
+                                <th>注册时间</th>
+                                <th>操作</th>
+                            </tr>
+                        </thead>
+                        <tbody id="user-table-body">
+                            <!-- 数据将通过JavaScript动态加载 -->
+                            <tr>
+                                <td colspan="8" class="loading">
+                                    <i class="fas fa-spinner fa-spin"></i>
+                                    <p>正在加载用户数据...</p>
+                                </td>
+                            </tr>
+                        </tbody>
+                    </table>
+                </div>
+                
+                <!-- 分页控件 -->
+                <div class="pagination" id="pagination">
+                    <button id="prev-btn" disabled>
+                        <i class="fas fa-chevron-left"></i>
+                        上一页
+                    </button>
+                    <div id="page-numbers">
+                        <button class="active">1</button>
+                        <button>2</button>
+                        <button>3</button>
+                    </div>
+                    <button id="next-btn">
+                        下一页
+                        <i class="fas fa-chevron-right"></i>
+                    </button>
+                </div>
+            </div>
+        </div>
+    </main>
+
+    <!-- 页脚 -->
+    <footer class="footer">
+        <div class="container">
+            <p>&copy; 2023 XX学校成绩管理系统. 版权所有.</p>
+            <p>技术支持: 信息技术中心 | 联系电话: 010-12345678</p>
+        </div>
+    </footer>
+
+    <!-- JavaScript -->
+    <script>
+        // 模拟用户数据
+        const mockUsers = [
+            {
+                id: 'admin001',
+                name: '张管理员',
+                role: 'admin',
+                className: '',
+                phone: '13800138001',
+                email: 'admin@xxschool.edu.cn',
+                registerTime: '2023-01-15'
+            },
+            {
+                id: 'teacher001',
+                name: '李老师',
+                role: 'teacher',
+                className: '计算机科学与技术1班',
+                phone: '13800138002',
+                email: 'li.teacher@xxschool.edu.cn',
+                registerTime: '2023-02-10'
+            },
+            {
+                id: 'teacher002',
+                name: '王老师',
+                role: 'teacher',
+                className: '软件工程1班',
+                phone: '13800138003',
+                email: 'wang.teacher@xxschool.edu.cn',
+                registerTime: '2023-02-12'
+            },
+            {
+                id: 'student001',
+                name: '张三',
+                role: 'student',
+                className: '计算机科学与技术1班',
+                phone: '13800138004',
+                email: 'zhangsan@xxschool.edu.cn',
+                registerTime: '2023-03-01'
+            },
+            {
+                id: 'student002',
+                name: '李四',
+                role: 'student',
+                className: '计算机科学与技术1班',
+                phone: '13800138005',
+                email: 'lisi@xxschool.edu.cn',
+                registerTime: '2023-03-01'
+            },
+            {
+                id: 'student003',
+                name: '王五',
+                role: 'student',
+                className: '软件工程1班',
+                phone: '13800138006',
+                email: 'wangwu@xxschool.edu.cn',
+                registerTime: '2023-03-02'
+            },
+            {
+                id: 'student004',
+                name: '赵六',
+                role: 'student',
+                className: '软件工程1班',
+                phone: '13800138007',
+                email: 'zhaoliu@xxschool.edu.cn',
+                registerTime: '2023-03-02'
+            },
+            {
+                id: 'student005',
+                name: '钱七',
+                role: 'student',
+                className: '网络工程1班',
+                phone: '13800138008',
+                email: 'qianqi@xxschool.edu.cn',
+                registerTime: '2023-03-03'
+            },
+            {
+                id: 'student006',
+                name: '孙八',
+                role: 'student',
+                className: '网络工程2班',
+                phone: '13800138009',
+                email: 'sunba@xxschool.edu.cn',
+                registerTime: '2023-03-03'
+            },
+            {
+                id: 'student007',
+                name: '周九',
+                role: 'student',
+                className: '计算机科学与技术2班',
+                phone: '13800138010',
+                email: 'zhoujiu@xxschool.edu.cn',
+                registerTime: '2023-03-04'
+            }
+        ];
+
+        // 当前显示的用户数据
+        let currentUsers = [...mockUsers];
+        let currentPage = 1;
+        const usersPerPage = 5;
+
+        // DOM元素
+        const userTableBody = document.getElementById('user-table-body');
+        const pagination = document.getElementById('pagination');
+        const prevBtn = document.getElementById('prev-btn');
+        const nextBtn = document.getElementById('next-btn');
+        const pageNumbers = document.getElementById('page-numbers');
+        const searchBtn = document.getElementById('search-btn');
+        const resetBtn = document.getElementById('reset-btn');
+        const addBtn = document.getElementById('add-btn');
+        const exportBtn = document.getElementById('export-btn');
+        const userIdInput = document.getElementById('user-id');
+        const userNameInput = document.getElementById('user-name');
+        const roleSelect = document.getElementById('role-select');
+        const classSelect = document.getElementById('class-select');
+
+        // 初始化
+        document.addEventListener('DOMContentLoaded', function() {
+            renderUserTable();
+            setupEventListeners();
+            updatePagination();
+        });
+
+        // 设置事件监听器
+        function setupEventListeners() {
+            searchBtn.addEventListener('click', handleSearch);
+            resetBtn.addEventListener('click', handleReset);
+            addBtn.addEventListener('click', handleAddUser);
+            exportBtn.addEventListener('click', handleExport);
+            prevBtn.addEventListener('click', goToPrevPage);
+            nextBtn.addEventListener('click', goToNextPage);
+        }
+
+        // 渲染用户表格
+        function renderUserTable() {
+            if (currentUsers.length === 0) {
+                userTableBody.innerHTML = `
+                    <tr>
+                        <td colspan="8" class="no-results">
+                            <i class="fas fa-user-slash"></i>
+                            <h3>没有找到用户</h3>
+                            <p>请尝试其他筛选条件或添加新用户</p>
+                        </td>
+                    </tr>
+                `;
+                return;
+            }
+
+            // 计算当前页的用户
+            const startIndex = (currentPage - 1) * usersPerPage;
+            const endIndex = startIndex + usersPerPage;
+            const pageUsers = currentUsers.slice(startIndex, endIndex);
+
+            let tableHTML = '';
+            pageUsers.forEach(user => {
+                // 角色徽章
+                let roleBadge = '';
+                if (user.role === 'admin') {
+                    roleBadge = '<span class="role-badge role-admin">管理员</span>';
+                } else if (user.role === 'teacher') {
+                    roleBadge = '<span class="role-badge role-teacher">教师</span>';
+                } else {
+                    roleBadge = '<span class="role-badge role-student">学生</span>';
+                }
+
+                tableHTML += `
+                    <tr>
+                        <td>${user.id}</td>
+                        <td>${user.name}</td>
+                        <td>${roleBadge}</td>
+                        <td>${user.className || '—'}</td>
+                        <td>${user.phone}</td>
+                        <td>${user.email}</td>
+                        <td>${user.registerTime}</td>
+                        <td>
+                            <div class="action-buttons-cell">
+                                <button class="btn-edit" onclick="editUser('${user.id}')">
+                                    <i class="fas fa-edit"></i>
+                                    编辑
+                                </button>
+                                <button class="btn-delete" onclick="deleteUser('${user.id}')">
+                                    <i class="fas fa-trash"></i>
+                                    删除
+                                </button>
+                            </div>
+                        </td>
+                    </tr>
+                `;
+            });
+
+            userTableBody.innerHTML = tableHTML;
+        }
+
+        // 更新分页
+        function updatePagination() {
+            const totalPages = Math.ceil(currentUsers.length / usersPerPage);
+            
+            // 更新按钮状态
+            prevBtn.disabled = currentPage === 1;
+            nextBtn.disabled = currentPage === totalPages || totalPages === 0;
+            
+            // 更新页码按钮
+            let pageButtonsHTML = '';
+            for (let i = 1; i <= totalPages; i++) {
+                if (i <= 5) { // 最多显示5个页码
+                    pageButtonsHTML += `<button class="${i === currentPage ? 'active' : ''}" onclick="goToPage(${i})">${i}</button>`;
+                }
+            }
+            pageNumbers.innerHTML = pageButtonsHTML;
+        }
+
+        // 处理搜索
+        function handleSearch() {
+            const userId = userIdInput.value.trim();
+            const userName = userNameInput.value.trim();
+            const role = roleSelect.value;
+            const className = classSelect.value;
+
+            currentUsers = mockUsers.filter(user => {
+                // 用户ID筛选
+                if (userId && !user.id.toLowerCase().includes(userId.toLowerCase())) {
+                    return false;
+                }
+                
+                // 姓名筛选
+                if (userName && !user.name.toLowerCase().includes(userName.toLowerCase())) {
+                    return false;
+                }
+                
+                // 角色筛选
+                if (role && user.role !== role) {
+                    return false;
+                }
+                
+                // 班级筛选
+                if (className && user.className !== className) {
+                    return false;
+                }
+                
+                return true;
+            });
+
+            currentPage = 1;
+            renderUserTable();
+            updatePagination();
+        }
+
+        // 处理重置
+        function handleReset() {
+            userIdInput.value = '';
+            userNameInput.value = '';
+            roleSelect.value = '';
+            classSelect.value = '';
+            
+            currentUsers = [...mockUsers];
+            currentPage = 1;
+            renderUserTable();
+            updatePagination();
+        }
+
+        // 处理添加用户
+        function handleAddUser() {
+            alert('添加用户功能将在后端API完成后实现');
+            // 这里可以打开一个模态框来添加新用户
+        }
+
+        // 处理导出
+        function handleExport() {
+            alert('导出功能将在后端API完成后实现');
+            // 这里可以导出为Excel或CSV格式
+        }
+
+        // 编辑用户
+        function editUser(userId) {
+            alert(`编辑用户 ${userId} - 功能将在后端API完成后实现`);
+            // 这里可以打开一个模态框来编辑用户信息
+        }
+
+        // 删除用户
+        function deleteUser(userId) {
+            if (confirm(`确定要删除用户 ${userId} 吗？此操作不可撤销。`)) {
+                // 从模拟数据中删除
+                const index = mockUsers.findIndex(user => user.id === userId);
+                if (index !== -1) {
+                    mockUsers.splice(index, 1);
+                    // 更新当前显示的数据
+                    handleSearch();
+                    alert('用户删除成功');
+                }
+            }
+        }
+
+        // 分页函数
+        function goToPage(page) {
+            currentPage = page;
+            renderUserTable();
+            updatePagination();
+        }
+
+        function goToPrevPage() {
+            if (currentPage > 1) {
+                currentPage--;
+                renderUserTable();
+                updatePagination();
+            }
+        }
+
+        function goToNextPage() {
+            const totalPages = Math.ceil(currentUsers.length / usersPerPage);
+            if (currentPage < totalPages) {
+                currentPage++;
+                renderUserTable();
+                updatePagination();
+            }
+        }
+    </script>
+</body>
+</html>
--- a/frontend/js/admin.js
+++ b/frontend/js/admin.js
@@ -0,0 +1,591 @@
+class AdminDashboard {
+    constructor() {
+        // 动态设置API基础URL，支持file:///协议和localhost:3000访问
+        this.apiBase = window.location.protocol === 'file:' ? 'http://localhost:3000/api' : '/api';
+        this.currentUser = null;
+        this.stats = {};
+        this.users = [];
+        this.students = [];
+        this.teachers = [];
+        this.init();
+    }
+
+    async init() {
+        // 检查登录状态
+        if (!await this.checkAuth()) {
+            window.location.href = '/frontend/html/login.html';
+            return;
+        }
+
+        // 加载用户信息
+        await this.loadUserInfo();
+        
+        // 加载统计数据
+        await this.loadStats();
+        
+        // 加载用户数据
+        await this.loadUsers();
+        
+        // 绑定事件
+        this.bindEvents();
+        
+        // 更新界面
+        this.updateUI();
+        
+        // 初始化图表
+        this.initCharts();
+    }
+
+    async checkAuth() {
+        try {
+            const response = await fetch(`${this.apiBase}/auth/me`, {
+                credentials: 'include'
+            });
+            
+            if (!response.ok) {
+                return false;
+            }
+            
+            const data = await response.json();
+            return data.success && data.user.role === 'admin';
+        } catch (error) {
+            console.error('认证检查失败:', error);
+            return false;
+        }
+    }
+
+    async loadUserInfo() {
+        try {
+            const response = await fetch(`${this.apiBase}/auth/me`, {
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                const data = await response.json();
+                if (data.success) {
+                    this.currentUser = data.user;
+                }
+            }
+        } catch (error) {
+            console.error('加载用户信息失败:', error);
+        }
+    }
+
+    async loadStats() {
+        try {
+            const response = await fetch(`${this.apiBase}/admin/stats`, {
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                const data = await response.json();
+                if (data.success) {
+                    this.stats = data.stats;
+                    this.updateStatsUI();
+                }
+            }
+        } catch (error) {
+            console.error('加载统计数据失败:', error);
+            this.showNotification('加载统计数据失败', 'error');
+        }
+    }
+
+    async loadUsers() {
+        try {
+            const response = await fetch(`${this.apiBase}/admin/users`, {
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                const data = await response.json();
+                if (data.success) {
+                    this.users = data.users;
+                    this.renderUsersTable();
+                }
+            }
+        } catch (error) {
+            console.error('加载用户数据失败:', error);
+            this.showNotification('加载用户数据失败', 'error');
+        }
+    }
+
+    updateStatsUI() {
+        // 更新统计卡片
+        const statElements = {
+            'totalUsers': 'totalUsers',
+            'totalStudents': 'totalStudents',
+            'totalTeachers': 'totalTeachers',
+            'totalCourses': 'totalCourses',
+            'totalGrades': 'totalGrades',
+            'avgScore': 'avgScore'
+        };
+
+        Object.entries(statElements).forEach(([key, elementId]) => {
+            const element = document.getElementById(elementId);
+            if (element && this.stats[key] !== undefined) {
+                element.textContent = this.stats[key];
+            }
+        });
+
+        // 更新时间
+        const timeElement = document.getElementById('currentTime');
+        if (timeElement) {
+            timeElement.textContent = new Date().toLocaleString();
+        }
+    }
+
+    renderUsersTable() {
+        const tableBody = document.getElementById('usersTableBody');
+        if (!tableBody) return;
+
+        if (this.users.length === 0) {
+            tableBody.innerHTML = `
+                <tr>
+                    <td colspan="7" class="text-center">
+                        <div class="no-data">
+                            <i class="fas fa-info-circle"></i>
+                            <p>暂无用户数据</p>
+                        </div>
+                    </td>
+                </tr>
+            `;
+            return;
+        }
+
+        tableBody.innerHTML = this.users.map(user => {
+            const roleClass = this.getRoleClass(user.role);
+            return `
+                <tr>
+                    <td><input type="checkbox" class="user-checkbox" data-id="${user.id}"></td>
+                    <td>${user.user_id}</td>
+                    <td>${user.full_name}</td>
+                    <td><span class="role-badge ${roleClass}">${user.role}</span></td>
+                    <td>${user.class_name || 'N/A'}</td>
+                    <td>${user.email || 'N/A'}</td>
+                    <td>
+                        <div class="action-buttons">
+                            <button class="btn-edit" data-id="${user.id}">
+                                <i class="fas fa-edit"></i> 编辑
+                            </button>
+                            <button class="btn-delete" data-id="${user.id}">
+                                <i class="fas fa-trash"></i> 删除
+                            </button>
+                        </div>
+                    </td>
+                </tr>
+            `;
+        }).join('');
+    }
+
+    getRoleClass(role) {
+        switch (role) {
+            case 'admin': return 'role-admin';
+            case 'teacher': return 'role-teacher';
+            case 'student': return 'role-student';
+            default: return 'role-default';
+        }
+    }
+
+    bindEvents() {
+        // 导航菜单点击
+        document.querySelectorAll('.nav-link').forEach(link => {
+            link.addEventListener('click', (e) => {
+                e.preventDefault();
+                const page = link.dataset.page;
+                this.loadPage(page);
+            });
+        });
+
+        // 搜索按钮
+        document.getElementById('searchBtn')?.addEventListener('click', () => {
+            this.handleSearch();
+        });
+
+        // 重置按钮
+        document.getElementById('resetBtn')?.addEventListener('click', () => {
+            this.resetFilters();
+        });
+
+        // 添加用户按钮
+        document.getElementById('addUserBtn')?.addEventListener('click', () => {
+            this.addUser();
+        });
+
+        // 导出按钮
+        document.getElementById('exportBtn')?.addEventListener('click', () => {
+            this.exportUsers();
+        });
+
+        // 批量删除按钮
+        document.getElementById('batchDeleteBtn')?.addEventListener('click', () => {
+            this.batchDeleteUsers();
+        });
+
+        // 表格操作按钮事件委托
+        document.addEventListener('click', (e) => {
+            if (e.target.closest('.btn-edit')) {
+                const userId = e.target.closest('.btn-edit').dataset.id;
+                this.editUser(userId);
+            }
+            
+            if (e.target.closest('.btn-delete')) {
+                const userId = e.target.closest('.btn-delete').dataset.id;
+                this.deleteUser(userId);
+            }
+        });
+
+        // 退出登录
+        document.getElementById('logoutBtn')?.addEventListener('click', () => {
+            this.handleLogout();
+        });
+
+        // 刷新按钮
+        document.getElementById('refreshBtn')?.addEventListener('click', () => {
+            this.refreshData();
+        });
+    }
+
+    async loadPage(page) {
+        // 这里可以实现页面切换逻辑
+        // 暂时使用简单跳转
+        switch (page) {
+            case 'users':
+                window.location.href = '/frontend/html/user_management.html';
+                break;
+            case 'students':
+                window.location.href = '/frontend/html/student_management.html';
+                break;
+            case 'teachers':
+                // 可以跳转到教师管理页面
+                break;
+            case 'grades':
+                window.location.href = '/frontend/html/grade_management.html';
+                break;
+            case 'settings':
+                // 可以跳转到系统设置页面
+                break;
+        }
+    }
+
+    handleSearch() {
+        const userId = document.getElementById('userIdFilter')?.value || '';
+        const name = document.getElementById('nameFilter')?.value || '';
+        const role = document.getElementById('roleFilter')?.value || '';
+        const className = document.getElementById('classFilter')?.value || '';
+        
+        // 这里可以实现搜索逻辑
+        this.showNotification('搜索功能待实现', 'info');
+    }
+
+    resetFilters() {
+        document.getElementById('userIdFilter').value = '';
+        document.getElementById('nameFilter').value = '';
+        document.getElementById('roleFilter').value = '';
+        document.getElementById('classFilter').value = '';
+        
+        // 重新加载数据
+        this.loadUsers();
+    }
+
+    async addUser() {
+        // 这里可以打开添加用户模态框
+        const userData = {
+            user_id: prompt('请输入用户ID:'),
+            full_name: prompt('请输入姓名:'),
+            role: prompt('请输入角色 (admin/teacher/student):'),
+            email: prompt('请输入邮箱:'),
+            class_name: prompt('请输入班级 (学生/教师可选):')
+        };
+
+        if (!userData.user_id || !userData.full_name || !userData.role) {
+            this.showNotification('用户ID、姓名和角色为必填项', 'error');
+            return;
+        }
+
+        try {
+            const response = await fetch(`${this.apiBase}/admin/users`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                credentials: 'include',
+                body: JSON.stringify(userData)
+            });
+            
+            const data = await response.json();
+            if (data.success) {
+                this.showNotification('用户添加成功', 'success');
+                await this.loadUsers();
+            } else {
+                this.showNotification(data.message || '添加失败', 'error');
+            }
+        } catch (error) {
+            console.error('添加用户失败:', error);
+            this.showNotification('添加用户失败', 'error');
+        }
+    }
+
+    async exportUsers() {
+        try {
+            const response = await fetch(`${this.apiBase}/admin/users/export`, {
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                const blob = await response.blob();
+                const url = window.URL.createObjectURL(blob);
+                const a = document.createElement('a');
+                a.href = url;
+                a.download = `用户列表_${new Date().toISOString().split('T')[0]}.xlsx`;
+                document.body.appendChild(a);
+                a.click();
+                document.body.removeChild(a);
+                window.URL.revokeObjectURL(url);
+            }
+        } catch (error) {
+            console.error('导出失败:', error);
+            this.showNotification('导出失败', 'error');
+        }
+    }
+
+    async batchDeleteUsers() {
+        const checkboxes = document.querySelectorAll('.user-checkbox:checked');
+        if (checkboxes.length === 0) {
+            this.showNotification('请选择要删除的用户', 'warning');
+            return;
+        }
+
+        if (!confirm(`确定要删除选中的 ${checkboxes.length} 个用户吗？`)) {
+            return;
+        }
+
+        const userIds = Array.from(checkboxes).map(cb => cb.dataset.id);
+        
+        try {
+            const response = await fetch(`${this.apiBase}/admin/users/batch`, {
+                method: 'DELETE',
+                headers: { 'Content-Type': 'application/json' },
+                credentials: 'include',
+                body: JSON.stringify({ userIds })
+            });
+            
+            const data = await response.json();
+            if (data.success) {
+                this.showNotification(`成功删除 ${userIds.length} 个用户`, 'success');
+                await this.loadUsers();
+            } else {
+                this.showNotification(data.message || '删除失败', 'error');
+            }
+        } catch (error) {
+            console.error('批量删除失败:', error);
+            this.showNotification('批量删除失败', 'error');
+        }
+    }
+
+    async editUser(userId) {
+        const user = this.users.find(u => u.id == userId);
+        if (!user) return;
+
+        // 这里可以打开编辑模态框
+        const newName = prompt('请输入新的姓名:', user.full_name);
+        if (newName === null) return;
+
+        const newRole = prompt('请输入新的角色:', user.role);
+        if (newRole === null) return;
+
+        try {
+            const response = await fetch(`${this.apiBase}/admin/users/${userId}`, {
+                method: 'PUT',
+                headers: { 'Content-Type': 'application/json' },
+                credentials: 'include',
+                body: JSON.stringify({ 
+                    full_name: newName,
+                    role: newRole,
+                    email: user.email,
+                    class_name: user.class_name
+                })
+            });
+            
+            const data = await response.json();
+            if (data.success) {
+                this.showNotification('用户更新成功', 'success');
+                await this.loadUsers();
+            } else {
+                this.showNotification(data.message || '更新失败', 'error');
+            }
+        } catch (error) {
+            console.error('更新用户失败:', error);
+            this.showNotification('更新用户失败', 'error');
+        }
+    }
+
+    async deleteUser(userId) {
+        if (!confirm('确定要删除这个用户吗？')) {
+            return;
+        }
+
+        try {
+            const response = await fetch(`${this.apiBase}/admin/users/${userId}`, {
+                method: 'DELETE',
+                credentials: 'include'
+            });
+            
+            const data = await response.json();
+            if (data.success) {
+                this.showNotification('用户删除成功', 'success');
+                await this.loadUsers();
+            } else {
+                this.showNotification(data.message || '删除失败', 'error');
+            }
+        } catch (error) {
+            console.error('删除用户失败:', error);
+            this.showNotification('删除用户失败', 'error');
+        }
+    }
+
+    async handleLogout() {
+        try {
+            const response = await fetch(`${this.apiBase}/auth/logout`, {
+                method: 'POST',
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                window.location.href = '/html/login.html';
+            }
+        } catch (error) {
+            console.error('退出登录失败:', error);
+        }
+    }
+
+    async refreshData() {
+        await this.loadStats();
+        await this.loadUsers();
+        this.showNotification('数据已刷新', 'success');
+    }
+
+    updateUI() {
+        // 更新用户信息
+        if (this.currentUser) {
+            const userInfoElements = document.querySelectorAll('.user-info');
+            userInfoElements.forEach(el => {
+                el.textContent = `${this.currentUser.full_name} (${this.currentUser.role})`;
+            });
+        }
+    }
+
+    async initCharts() {
+        // 加载Chart.js库
+        await this.loadChartLibrary();
+        
+        // 初始化用户分布饼图
+        this.initUserDistributionChart();
+        
+        // 初始化成绩分布柱状图
+        this.initGradeDistributionChart();
+    }
+
+    showNotification(message, type = 'info') {
+        // 创建通知元素
+        const notification = document.createElement('div');
+        notification.className = `notification notification-${type}`;
+        notification.innerHTML = `
+            <i class="fas fa-${type === 'success' ? 'check-circle' : type === 'error' ? 'exclamation-circle' : type === 'warning' ? 'exclamation-triangle' : 'info-circle'}"></i>
+            <span>${message}</span>
+            <button class="notification-close">&times;</button>
+        `;
+        
+        // 添加到页面
+        document.body.appendChild(notification);
+        
+        // 添加关闭事件
+        notification.querySelector('.notification-close').addEventListener('click', () => {
+            notification.remove();
+        });
+        
+        // 自动移除
+        setTimeout(() => {
+            if (notification.parentNode) {
+                notification.remove();
+            }
+        }, 5000);
+    }
+
+    async loadChartLibrary() {
+        if (typeof Chart !== 'undefined') return;
+
+        return new Promise((resolve, reject) => {
+            const script = document.createElement('script');
+            script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.9.1/dist/chart.min.js';
+            script.onload = resolve;
+            script.onerror = reject;
+            document.head.appendChild(script);
+        });
+    }
+
+    initUserDistributionChart() {
+        const ctx = document.getElementById('userDistributionChart');
+        if (!ctx) return;
+
+        // 模拟数据
+        const data = {
+            labels: ['学生', '教师', '管理员'],
+            datasets: [{
+                data: [this.stats.totalStudents || 100, this.stats.totalTeachers || 20, 1],
+                backgroundColor: [
+                    'rgba(54, 162, 235, 0.8)',
+                    'rgba(255, 206, 86, 0.8)',
+                    'rgba(255, 99, 132, 0.8)'
+                ]
+            }]
+        };
+        
+        new Chart(ctx, {
+            type: 'pie',
+            data: data,
+            options: {
+                responsive: true,
+                plugins: {
+                    legend: {
+                        position: 'bottom'
+                    }
+                }
+            }
+        });
+    }
+
+    initGradeDistributionChart() {
+        const ctx = document.getElementById('gradeDistributionChart');
+        if (!ctx) return;
+        
+        // 模拟数据
+        const data = {
+            labels: ['A', 'B', 'C', 'D', 'F'],
+            datasets: [{
+                label: '成绩分布',
+                data: [25, 35, 20, 15, 5],
+                backgroundColor: [
+                    'rgba(75, 192, 192, 0.8)',
+                    'rgba(54, 162, 235, 0.8)',
+                    'rgba(255, 206, 86, 0.8)',
+                    'rgba(255, 159, 64, 0.8)',
+                    'rgba(255, 99, 132, 0.8)'
+                ]
+            }]
+        };
+        
+        new Chart(ctx, {
+            type: 'bar',
+            data: data,
+            options: {
+                responsive: true,
+                scales: {
+                    y: {
+                        beginAtZero: true,
+                        ticks: {
+                            stepSize: 10
+                        }
+                    }
+                }
+            }
+        });
+    }
+}
--- a/frontend/js/auth.js
+++ b/frontend/js/auth.js
@@ -0,0 +1,269 @@
+class AuthManager {
+    constructor() {
+        // 动态设置API基础URL，支持file:///协议和localhost:3000访问
+        this.apiBase = window.location.protocol === 'file:' ? 'http://localhost:3000/api' : '/api';
+        this.initEventListeners();
+        this.checkAuthStatus();
+    }
+    
+    async checkAuthStatus() {
+        try {
+            const response = await fetch(`${this.apiBase}/auth/me`);
+            const data = await response.json();
+            
+            if (data.success && data.user) {
+                // 用户已登录，根据角色重定向到正确的仪表板
+                const userRole = data.user.role;
+                let redirectUrl = '/dashboard';
+                
+                if (userRole === 'student') {
+                    redirectUrl = '/frontend/html/student_dashboard.html';
+                } else if (userRole === 'teacher') {
+                    redirectUrl = '/frontend/html/teacher_dashboard.html';
+                } else if (userRole === 'admin') {
+                    redirectUrl = '/frontend/html/admin_dashboard.html';
+                }
+                
+                // 如果当前页面是登录或注册页面，则重定向到仪表板
+                const currentPath = window.location.pathname;
+                if (currentPath.includes('login.html') || currentPath.includes('register.html')) {
+                    window.location.href = redirectUrl;
+                }
+                // 如果当前页面不是正确的仪表板页面，则重定向
+                else if (!currentPath.includes(redirectUrl) && 
+                         currentPath !== '/' && 
+                         !currentPath.includes('index.html')) {
+                    window.location.href = redirectUrl;
+                }
+            }
+        } catch (error) {
+            console.log('用户未登录');
+        }
+    }
+    
+    initEventListeners() {
+        // 登录表单提交
+        const loginForm = document.getElementById('loginForm');
+        if (loginForm) {
+            loginForm.addEventListener('submit', (e) => this.handleLogin(e));
+        }
+        
+        // 注册表单提交
+        const registerForm = document.getElementById('registerForm');
+        if (registerForm) {
+            registerForm.addEventListener('submit', (e) => this.handleRegister(e));
+        }
+        
+        // 登出按钮
+        const logoutBtn = document.getElementById('logoutBtn');
+        if (logoutBtn) {
+            logoutBtn.addEventListener('click', (e) => this.handleLogout(e));
+        }
+    }
+    
+    async handleLogin(e) {
+        e.preventDefault();
+        
+        const form = e.target;
+        const formData = new FormData(form);
+        const data = Object.fromEntries(formData.entries());
+        
+        const submitBtn = form.querySelector('button[type="submit"]');
+        const originalText = submitBtn.innerHTML;
+        submitBtn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> 登录中...';
+        submitBtn.disabled = true;
+        
+        try {
+            const response = await fetch(`${this.apiBase}/auth/login`, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                body: JSON.stringify(data)
+            });
+            
+            const result = await response.json();
+            
+            if (result.success) {
+                this.showNotification('登录成功！正在跳转...', 'success');
+                
+                // 根据用户角色跳转到不同的仪表板
+                const userRole = result.user?.role;
+                let redirectUrl = '/dashboard';
+                
+                if (userRole === 'student') {
+                    redirectUrl = '/frontend/html/student_dashboard.html';
+                } else if (userRole === 'teacher') {
+                    redirectUrl = '/frontend/html/teacher_dashboard.html';
+                } else if (userRole === 'admin') {
+                    redirectUrl = '/frontend/html/admin_dashboard.html';
+                }
+                
+                // 延迟跳转以显示通知
+                setTimeout(() => {
+                    window.location.href = redirectUrl;
+                }, 1500);
+            } else {
+                this.showNotification(result.message || '登录失败', 'error');
+                submitBtn.innerHTML = originalText;
+                submitBtn.disabled = false;
+            }
+        } catch (error) {
+            console.error('登录错误:', error);
+            this.showNotification('网络错误，请重试', 'error');
+            submitBtn.innerHTML = originalText;
+            submitBtn.disabled = false;
+        }
+    }
+    
+    async handleRegister(e) {
+        e.preventDefault();
+        
+        const form = e.target;
+        const formData = new FormData(form);
+        const data = Object.fromEntries(formData.entries());
+        
+        // 验证密码
+        if (data.password !== data.confirmPassword) {
+            this.showNotification('两次输入的密码不一致', 'error');
+            return;
+        }
+        
+        const submitBtn = form.querySelector('button[type="submit"]');
+        const originalText = submitBtn.innerHTML;
+        submitBtn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> 注册中...';
+        submitBtn.disabled = true;
+        
+        try {
+            const response = await fetch(`${this.apiBase}/auth/register`, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                body: JSON.stringify(data)
+            });
+            
+            const result = await response.json();
+            
+            if (result.success) {
+                this.showNotification('注册成功！正在跳转到登录页面...', 'success');
+                
+                setTimeout(() => {
+                    window.location.href = '/html/login.html';
+                }, 1500);
+            } else {
+                this.showNotification(result.message || '注册失败', 'error');
+                submitBtn.innerHTML = originalText;
+                submitBtn.disabled = false;
+            }
+        } catch (error) {
+            console.error('注册错误:', error);
+            this.showNotification('网络错误，请重试', 'error');
+            submitBtn.innerHTML = originalText;
+            submitBtn.disabled = false;
+        }
+    }
+    
+    async handleLogout(e) {
+        e.preventDefault();
+        
+        if (!confirm('确定要退出登录吗？')) {
+            return;
+        }
+        
+        try {
+            const response = await fetch(`${this.apiBase}/auth/logout`, {
+                method: 'POST'
+            });
+            
+            const result = await response.json();
+            
+            if (result.success) {
+                this.showNotification('已成功退出登录', 'success');
+                setTimeout(() => {
+                    window.location.href = '/';
+                }, 1000);
+            } else {
+                this.showNotification('退出登录失败', 'error');
+            }
+        } catch (error) {
+            console.error('退出登录错误:', error);
+            this.showNotification('网络错误，请重试', 'error');
+        }
+    }
+    
+    showNotification(message, type = 'info') {
+        // 移除现有的通知
+        const existingNotification = document.querySelector('.notification');
+        if (existingNotification) {
+            existingNotification.remove();
+        }
+        
+        // 创建新的通知
+        const notification = document.createElement('div');
+        notification.className = `notification notification-${type}`;
+        notification.innerHTML = `
+            <i class="fas fa-${type === 'success' ? 'check-circle' : 'exclamation-circle'}"></i>
+            <span>${message}</span>
+        `;
+        
+        // 样式
+        notification.style.cssText = `
+            position: fixed;
+            top: 20px;
+            right: 20px;
+            background: ${type === 'success' ? '#10b981' : type === 'error' ? '#ef4444' : '#3b82f6'};
+            color: white;
+            padding: 15px 20px;
+            border-radius: 8px;
+            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
+            display: flex;
+            align-items: center;
+            gap: 10px;
+            z-index: 1000;
+            animation: slideIn 0.3s ease;
+        `;
+        
+        document.body.appendChild(notification);
+        
+        // 3秒后自动移除
+        setTimeout(() => {
+            notification.style.animation = 'slideOut 0.3s ease';
+            setTimeout(() => notification.remove(), 300);
+        }, 3000);
+        
+        // 添加动画关键帧
+        if (!document.querySelector('#notification-styles')) {
+            const style = document.createElement('style');
+            style.id = 'notification-styles';
+            style.textContent = `
+                @keyframes slideIn {
+                    from {
+                        transform: translateX(100%);
+                        opacity: 0;
+                    }
+                    to {
+                        transform: translateX(0);
+                        opacity: 1;
+                    }
+                }
+                @keyframes slideOut {
+                    from {
+                        transform: translateX(0);
+                        opacity: 1;
+                    }
+                    to {
+                        transform: translateX(100%);
+                        opacity: 0;
+                    }
+                }
+            `;
+            document.head.appendChild(style);
+        }
+    }
+}
+
+// 初始化认证管理器
+document.addEventListener('DOMContentLoaded', () => {
+    window.authManager = new AuthManager();
+});
--- a/frontend/js/main.js
+++ b/frontend/js/main.js
@@ -0,0 +1,222 @@
+// 首页通用JavaScript功能
+// 主要处理导航栏交互、页面滚动效果等通用功能
+
+class MainPage {
+    constructor() {
+        this.init();
+    }
+
+    init() {
+        // 初始化所有功能
+        this.initNavbar();
+        this.initScrollEffects();
+        this.initSmoothScroll();
+        this.initBackToTop();
+        this.initMobileMenu();
+        this.initAuthButtons();
+    }
+
+    // 初始化导航栏交互
+    initNavbar() {
+        const navbar = document.querySelector('.navbar');
+        if (!navbar) return;
+
+        // 滚动时改变导航栏样式
+        window.addEventListener('scroll', () => {
+            if (window.scrollY > 50) {
+                navbar.classList.add('navbar-scrolled');
+            } else {
+                navbar.classList.remove('navbar-scrolled');
+            }
+        });
+
+        // 初始化当前页面高亮
+        this.highlightCurrentPage();
+    }
+
+    // 高亮当前页面导航链接
+    highlightCurrentPage() {
+        const currentPath = window.location.pathname;
+        const navLinks = document.querySelectorAll('.nav-link');
+        
+        navLinks.forEach(link => {
+            const href = link.getAttribute('href');
+            if (href && currentPath.includes(href.replace('.html', ''))) {
+                link.classList.add('active');
+            }
+        });
+    }
+
+    // 初始化滚动效果
+    initScrollEffects() {
+        // 滚动时显示/隐藏元素
+        const observerOptions = {
+            root: null,
+            rootMargin: '0px',
+            threshold: 0.1
+        };
+
+        const observer = new IntersectionObserver((entries) => {
+            entries.forEach(entry => {
+                if (entry.isIntersecting) {
+                    entry.target.classList.add('animate-in');
+                }
+            });
+        }, observerOptions);
+
+        // 观察需要动画的元素
+        document.querySelectorAll('.feature-card, .hero-content').forEach(el => {
+            observer.observe(el);
+        });
+    }
+
+    // 初始化平滑滚动
+    initSmoothScroll() {
+        document.querySelectorAll('a[href^="#"]').forEach(anchor => {
+            anchor.addEventListener('click', (e) => {
+                e.preventDefault();
+                const targetId = anchor.getAttribute('href');
+                if (targetId === '#') return;
+                
+                const targetElement = document.querySelector(targetId);
+                if (targetElement) {
+                    targetElement.scrollIntoView({
+                        behavior: 'smooth',
+                        block: 'start'
+                    });
+                }
+            });
+        });
+    }
+
+    // 初始化返回顶部按钮
+    initBackToTop() {
+        const backToTopBtn = document.createElement('button');
+        backToTopBtn.id = 'backToTop';
+        backToTopBtn.innerHTML = '<i class="fas fa-chevron-up"></i>';
+        backToTopBtn.title = '返回顶部';
+        document.body.appendChild(backToTopBtn);
+
+        // 滚动时显示/隐藏按钮
+        window.addEventListener('scroll', () => {
+            if (window.scrollY > 300) {
+                backToTopBtn.classList.add('show');
+            } else {
+                backToTopBtn.classList.remove('show');
+            }
+        });
+
+        // 点击返回顶部
+        backToTopBtn.addEventListener('click', () => {
+            window.scrollTo({
+                top: 0,
+                behavior: 'smooth'
+            });
+        });
+    }
+
+    // 初始化移动端菜单
+    initMobileMenu() {
+        const navbarToggler = document.querySelector('.navbar-toggler');
+        const navbarCollapse = document.querySelector('.navbar-collapse');
+        
+        if (!navbarToggler || !navbarCollapse) return;
+
+        navbarToggler.addEventListener('click', () => {
+            navbarCollapse.classList.toggle('show');
+        });
+
+        // 点击菜单项后自动关闭移动菜单
+        document.querySelectorAll('.navbar-nav .nav-link').forEach(link => {
+            link.addEventListener('click', () => {
+                if (navbarCollapse.classList.contains('show')) {
+                    navbarCollapse.classList.remove('show');
+                }
+            });
+        });
+    }
+
+    // 初始化认证按钮状态
+    initAuthButtons() {
+        // 检查用户是否已登录
+        this.checkLoginStatus().then(user => {
+            const loginBtn = document.getElementById('loginBtn');
+            const registerBtn = document.getElementById('registerBtn');
+            const heroLoginBtn = document.getElementById('heroLoginBtn');
+            
+            if (user) {
+                // 用户已登录，显示仪表板按钮
+                // 根据用户角色设置正确的仪表板路径
+                let dashboardUrl = '/dashboard';
+                if (user.role === 'student') {
+                    dashboardUrl = '/frontend/html/student_dashboard.html';
+                } else if (user.role === 'teacher') {
+                    dashboardUrl = '/frontend/html/teacher_dashboard.html';
+                } else if (user.role === 'admin') {
+                    dashboardUrl = '/frontend/html/admin_dashboard.html';
+                }
+                
+                if (loginBtn) {
+                    loginBtn.textContent = '进入仪表板';
+                    loginBtn.href = dashboardUrl;
+                }
+                if (heroLoginBtn) {
+                    heroLoginBtn.textContent = '进入仪表板';
+                    heroLoginBtn.href = dashboardUrl;
+                }
+                if (registerBtn) {
+                    registerBtn.style.display = 'none';
+                }
+            }
+        });
+    }
+
+    // 检查登录状态
+    async checkLoginStatus() {
+        try {
+            const apiBase = window.location.protocol === 'file:' ? 'http://localhost:3000/api' : '/api';
+            const response = await fetch(`${apiBase}/auth/me`);
+            const data = await response.json();
+            return data.success && data.user;
+        } catch (error) {
+            console.log('用户未登录');
+            return false;
+        }
+    }
+
+    // 显示通知
+    showNotification(message, type = 'info') {
+        // 创建通知元素
+        const notification = document.createElement('div');
+        notification.className = `notification notification-${type}`;
+        notification.innerHTML = `
+            <div class="notification-content">
+                <i class="fas ${type === 'success' ? 'fa-check-circle' : type === 'error' ? 'fa-exclamation-circle' : 'fa-info-circle'}"></i>
+                <span>${message}</span>
+            </div>
+        `;
+        
+        // 添加到页面
+        document.body.appendChild(notification);
+        
+        // 显示通知
+        setTimeout(() => {
+            notification.classList.add('show');
+        }, 10);
+        
+        // 自动隐藏
+        setTimeout(() => {
+            notification.classList.remove('show');
+            setTimeout(() => {
+                if (notification.parentNode) {
+                    notification.parentNode.removeChild(notification);
+                }
+            }, 300);
+        }, 3000);
+    }
+}
+
+// 页面加载完成后初始化
+document.addEventListener('DOMContentLoaded', () => {
+    new MainPage();
+});
--- a/frontend/js/student.js
+++ b/frontend/js/student.js
@@ -0,0 +1,438 @@
+class StudentManager {
+    constructor() {
+        // 动态设置API基础URL，支持file:///协议和localhost:3000访问
+        this.apiBase = window.location.protocol === 'file:' ? 'http://localhost:3000/api' : '/api';
+        this.initDashboard();
+        this.initGradeDetails();
+        this.loadProfile();
+    }
+    
+    async initDashboard() {
+        const gradeList = document.getElementById('gradeList');
+        const statisticsElement = document.getElementById('statistics');
+        
+        if (!gradeList) return;
+        
+        try {
+            const response = await fetch(`${this.apiBase}/student/grades`, {
+                credentials: 'include'
+            });
+            
+            if (response.status === 401) {
+                // 未登录，重定向到登录页
+                this.showNotification('请先登录', 'error');
+                setTimeout(() => {
+                    window.location.href = '/html/login.html';
+                }, 1500);
+                return;
+            }
+            
+            const data = await response.json();
+            
+            if (data.success) {
+                this.renderGrades(data.grades);
+                this.renderStatistics(data.statistics);
+                this.updateChart(data.grades);
+            } else {
+                this.showNotification(data.message || '获取成绩失败', 'error');
+            }
+        } catch (error) {
+            console.error('获取成绩错误:', error);
+            this.showNotification('网络错误，请重试', 'error');
+        }
+    }
+    
+    renderGrades(grades) {
+        const gradeList = document.getElementById('gradeList');
+        const gradeTable = document.getElementById('gradeTable');
+        
+        if (!gradeTable) return;
+        
+        if (grades.length === 0) {
+            gradeList.innerHTML = `
+                <div class="empty-state">
+                    <i class="fas fa-clipboard-list fa-3x"></i>
+                    <h3>暂无成绩记录</h3>
+                    <p>你还没有任何成绩记录</p>
+                </div>
+            `;
+            return;
+        }
+        
+        const tbody = gradeTable.querySelector('tbody');
+        tbody.innerHTML = '';
+        
+        grades.forEach(grade => {
+            const row = document.createElement('tr');
+            
+            // 根据分数设置颜色
+            let scoreClass = '';
+            if (grade.score >= 90) scoreClass = 'grade-excellent';
+            else if (grade.score >= 80) scoreClass = 'grade-good';
+            else if (grade.score >= 60) scoreClass = 'grade-pass';
+            else scoreClass = 'grade-fail';
+            
+            row.innerHTML = `
+                <td>${grade.course_code}</td>
+                <td>${grade.course_name}</td>
+                <td>${grade.credit}</td>
+                <td class="${scoreClass}">
+                    <span class="grade-badge">${grade.score}</span>
+                </td>
+                <td>${grade.grade_level || '-'}</td>
+                <td>${grade.grade_point || '-'}</td>
+                <td>${grade.teacher_name}</td>
+                <td>${new Date(grade.exam_date).toLocaleDateString()}</td>
+                <td>
+                    <a href="/html/student/details.html?id=${grade.id}" 
+                       class="btn btn-sm btn-secondary">
+                        <i class="fas fa-eye"></i> 查看
+                    </a>
+                </td>
+            `;
+            
+            tbody.appendChild(row);
+        });
+    }
+    
+    renderStatistics(statistics) {
+        const element = document.getElementById('statistics');
+        if (!element) return;
+        
+        element.innerHTML = `
+            <div class="stats-grid">
+                <div class="stat-card">
+                    <div class="stat-icon student">
+                        <i class="fas fa-book"></i>
+                    </div>
+                    <div class="stat-value">${statistics.totalCourses}</div>
+                    <div class="stat-label">总课程数</div>
+                </div>
+                <div class="stat-card">
+                    <div class="stat-icon course">
+                        <i class="fas fa-star"></i>
+                    </div>
+                    <div class="stat-value">${statistics.totalCredits}</div>
+                    <div class="stat-label">总学分</div>
+                </div>
+                <div class="stat-card">
+                    <div class="stat-icon grade">
+                        <i class="fas fa-chart-line"></i>
+                    </div>
+                    <div class="stat-value">${statistics.averageScore}</div>
+                    <div class="stat-label">平均分</div>
+                </div>
+                <div class="stat-card">
+                    <div class="stat-icon teacher">
+                        <i class="fas fa-graduation-cap"></i>
+                    </div>
+                    <div class="stat-value">${statistics.gpa}</div>
+                    <div class="stat-label">平均绩点</div>
+                </div>
+            </div>
+        `;
+    }
+    
+    async loadProfile() {
+        const profileElement = document.getElementById('profileInfo');
+        if (!profileElement) return;
+        
+        try {
+            const response = await fetch(`${this.apiBase}/student/profile`, {
+                credentials: 'include'
+            });
+            
+            if (response.status === 401) {
+                // 未登录，重定向到登录页
+                this.showNotification('请先登录', 'error');
+                setTimeout(() => {
+                    window.location.href = '/html/login.html';
+                }, 1500);
+                return;
+            }
+            
+            const data = await response.json();
+            
+            if (data.success) {
+                const profile = data.profile;
+                
+                // 更新学生仪表板顶部信息
+                const userNameElement = document.getElementById('userName');
+                const studentNameElement = document.getElementById('studentName');
+                const studentClassElement = document.getElementById('studentClass');
+                
+                if (userNameElement) {
+                    userNameElement.textContent = profile.full_name || profile.username;
+                }
+                if (studentNameElement) {
+                    studentNameElement.textContent = profile.full_name || profile.username;
+                }
+                if (studentClassElement) {
+                    studentClassElement.textContent = profile.class_name || '未设置';
+                }
+                
+                profileElement.innerHTML = `
+                    <div class="profile-header">
+                        <div class="profile-avatar">
+                            <i class="fas fa-user-graduate"></i>
+                        </div>
+                        <div class="profile-info">
+                            <h2>${profile.full_name}</h2>
+                            <p class="profile-role">
+                                <i class="fas fa-user-tag"></i> 学生
+                            </p>
+                        </div>
+                    </div>
+                    <div class="profile-details">
+                        <div class="detail-item">
+                            <i class="fas fa-id-card"></i>
+                            <div>
+                                <h4>学号</h4>
+                                <p>${profile.student_id}</p>
+                            </div>
+                        </div>
+                        <div class="detail-item">
+                            <i class="fas fa-users"></i>
+                            <div>
+                                <h4>班级</h4>
+                                <p>${profile.class_name}</p>
+                            </div>
+                        </div>
+                        <div class="detail-item">
+                            <i class="fas fa-book"></i>
+                            <div>
+                                <h4>专业</h4>
+                                <p>${profile.major || '未设置'}</p>
+                            </div>
+                        </div>
+                        <div class="detail-item">
+                            <i class="fas fa-calendar-alt"></i>
+                            <div>
+                                <h4>入学年份</h4>
+                                <p>${profile.enrollment_year || '未设置'}</p>
+                            </div>
+                        </div>
+                    </div>
+                `;
+            } else {
+                // API返回失败
+                this.showNotification(data.message || '获取个人信息失败', 'error');
+            }
+        } catch (error) {
+            console.error('加载个人信息错误:', error);
+            this.showNotification('网络错误，请重试', 'error');
+        }
+    }
+    
+    async initGradeDetails() {
+        const urlParams = new URLSearchParams(window.location.search);
+        const gradeId = urlParams.get('id');
+        
+        if (!gradeId) return;
+        
+        try {
+            const response = await fetch(`${this.apiBase}/student/grades/${gradeId}`, {
+                credentials: 'include'
+            });
+            const data = await response.json();
+            
+            if (data.success) {
+                this.renderGradeDetails(data.grade);
+            } else {
+                this.showNotification('获取成绩详情失败', 'error');
+                setTimeout(() => window.history.back(), 1500);
+            }
+        } catch (error) {
+            console.error('获取成绩详情错误:', error);
+            this.showNotification('网络错误，请重试', 'error');
+        }
+    }
+    
+    renderGradeDetails(grade) {
+        const container = document.getElementById('gradeDetails');
+        if (!container) return;
+        
+        // 计算绩点描述
+        let gradeDescription = '';
+        if (grade.score >= 90) gradeDescription = '优秀';
+        else if (grade.score >= 80) gradeDescription = '良好';
+        else if (grade.score >= 70) gradeDescription = '中等';
+        else if (grade.score >= 60) gradeDescription = '及格';
+        else gradeDescription = '不及格';
+        
+        container.innerHTML = `
+            <div class="grade-detail-card">
+                <div class="grade-header">
+                    <h2>${grade.course_name} (${grade.course_code})</h2>
+                    <div class="grade-score ${grade.score >= 60 ? 'score-pass' : 'score-fail'}">
+                        ${grade.score} 分
+                        <span class="grade-description">${gradeDescription}</span>
+                    </div>
+                </div>
+                
+                <div class="grade-details-grid">
+                    <div class="detail-section">
+                        <h3><i class="fas fa-info-circle"></i> 基本信息</h3>
+                        <div class="detail-row">
+                            <span>学分：</span>
+                            <strong>${grade.credit}</strong>
+                        </div>
+                        <div class="detail-row">
+                            <span>学期：</span>
+                            <strong>${grade.semester}</strong>
+                        </div>
+                        <div class="detail-row">
+                            <span>考试日期：</span>
+                            <strong>${new Date(grade.exam_date).toLocaleDateString()}</strong>
+                        </div>
+                        <div class="detail-row">
+                            <span>等级：</span>
+                            <strong class="grade-level-${grade.grade_level}">${grade.grade_level || '-'}</strong>
+                        </div>
+                        <div class="detail-row">
+                            <span>绩点：</span>
+                            <strong>${grade.grade_point || '-'}</strong>
+                        </div>
+                    </div>
+                    
+                    <div class="detail-section">
+                        <h3><i class="fas fa-user-graduate"></i> 学生信息</h3>
+                        <div class="detail-row">
+                            <span>姓名：</span>
+                            <strong>${grade.full_name}</strong>
+                        </div>
+                        <div class="detail-row">
+                            <span>学号：</span>
+                            <strong>${grade.student_number}</strong>
+                        </div>
+                        <div class="detail-row">
+                            <span>班级：</span>
+                            <strong>${grade.class_name}</strong>
+                        </div>
+                        <div class="detail-row">
+                            <span>专业：</span>
+                            <strong>${grade.major || '未设置'}</strong>
+                        </div>
+                    </div>
+                    
+                    <div class="detail-section">
+                        <h3><i class="fas fa-chalkboard-teacher"></i> 教师信息</h3>
+                        <div class="detail-row">
+                            <span>任课教师：</span>
+                            <strong>${grade.teacher_name}</strong>
+                        </div>
+                        <div class="detail-row">
+                            <span>教师邮箱：</span>
+                            <strong>${grade.teacher_email}</strong>
+                        </div>
+                    </div>
+                </div>
+                
+                ${grade.remark ? `
+                    <div class="remark-section">
+                        <h3><i class="fas fa-comment"></i> 备注</h3>
+                        <p>${grade.remark}</p>
+                    </div>
+                ` : ''}
+                
+                <div class="grade-actions">
+                    <button onclick="window.print()" class="btn btn-secondary">
+                        <i class="fas fa-print"></i> 打印成绩单
+                    </button>
+                    <button onclick="window.history.back()" class="btn btn-primary">
+                        <i class="fas fa-arrow-left"></i> 返回
+                    </button>
+                </div>
+            </div>
+        `;
+    }
+    
+    updateChart(grades) {
+        const ctx = document.getElementById('gradeChart');
+        if (!ctx) return;
+        
+        if (typeof Chart === 'undefined') {
+            // 如果没有Chart.js，延迟加载
+            this.loadChartLibrary().then(() => this.updateChart(grades));
+            return;
+        }
+        
+        const courseNames = grades.map(g => g.course_name);
+        const scores = grades.map(g => g.score);
+        
+        // 销毁现有图表实例
+        if (window.gradeChart instanceof Chart) {
+            window.gradeChart.destroy();
+        }
+        
+        window.gradeChart = new Chart(ctx, {
+            type: 'bar',
+            data: {
+                labels: courseNames,
+                datasets: [{
+                    label: '分数',
+                    data: scores,
+                    backgroundColor: scores.map(score => {
+                        if (score >= 90) return 'rgba(75, 192, 192, 0.7)';
+                        if (score >= 80) return 'rgba(54, 162, 235, 0.7)';
+                        if (score >= 60) return 'rgba(255, 206, 86, 0.7)';
+                        return 'rgba(255, 99, 132, 0.7)';
+                    }),
+                    borderColor: scores.map(score => {
+                        if (score >= 90) return 'rgb(75, 192, 192)';
+                        if (score >= 80) return 'rgb(54, 162, 235)';
+                        if (score >= 60) return 'rgb(255, 206, 86)';
+                        return 'rgb(255, 99, 132)';
+                    }),
+                    borderWidth: 1
+                }]
+            },
+            options: {
+                responsive: true,
+                plugins: {
+                    title: {
+                        display: true,
+                        text: '各科成绩分布'
+                    }
+                },
+                scales: {
+                    y: {
+                        beginAtZero: true,
+                        max: 100
+                    }
+                }
+            }
+        });
+    }
+    
+    async loadChartLibrary() {
+        return new Promise((resolve, reject) => {
+            if (typeof Chart !== 'undefined') {
+                resolve();
+                return;
+            }
+            
+            const script = document.createElement('script');
+            script.src = 'https://cdn.jsdelivr.net/npm/chart.js';
+            script.onload = resolve;
+            script.onerror = reject;
+            document.head.appendChild(script);
+        });
+    }
+    
+    showNotification(message, type = 'info') {
+        // 使用AuthManager的通知系统或自己实现
+        if (window.authManager && window.authManager.showNotification) {
+            window.authManager.showNotification(message, type);
+        } else {
+            alert(message);
+        }
+    }
+}
+
+// 初始化学生管理器
+document.addEventListener('DOMContentLoaded', () => {
+    if (window.location.pathname.includes('/student/')) {
+        window.studentManager = new StudentManager();
+    }
+});
--- a/frontend/js/teacher.js
+++ b/frontend/js/teacher.js
@@ -0,0 +1,409 @@
+class TeacherDashboard {
+    constructor() {
+        // 动态设置API基础URL，支持file:///协议和localhost:3000访问
+        this.apiBase = window.location.protocol === 'file:' ? 'http://localhost:3000/api' : '/api';
+        this.currentUser = null;
+        this.courses = [];
+        this.grades = [];
+        this.init();
+    }
+
+    async init() {
+        // 检查登录状态
+        if (!await this.checkAuth()) {
+            window.location.href = '/frontend/html/login.html';
+            return;
+        }
+
+        // 加载用户信息
+        await this.loadUserInfo();
+        
+        // 加载课程数据
+        await this.loadCourses();
+        
+        // 加载成绩数据
+        await this.loadGrades();
+        
+        // 绑定事件
+        this.bindEvents();
+        
+        // 更新界面
+        this.updateUI();
+    }
+
+    async checkAuth() {
+        try {
+            const response = await fetch(`${this.apiBase}/auth/check`, {
+                credentials: 'include'
+            });
+            
+            if (!response.ok) {
+                return false;
+            }
+            
+            const data = await response.json();
+            return data.success && data.user.role === 'teacher';
+        } catch (error) {
+            console.error('认证检查失败:', error);
+            return false;
+        }
+    }
+
+    async loadUserInfo() {
+        try {
+            const response = await fetch(`${this.apiBase}/auth/me`, {
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                const data = await response.json();
+                if (data.success) {
+                    this.currentUser = data.user;
+                }
+            }
+        } catch (error) {
+            console.error('加载用户信息失败:', error);
+        }
+    }
+
+    async loadCourses() {
+        try {
+            const response = await fetch(`${this.apiBase}/teacher/courses`, {
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                const data = await response.json();
+                if (data.success) {
+                    this.courses = data.courses;
+                    this.populateCourseSelectors();
+                }
+            }
+        } catch (error) {
+            console.error('加载课程失败:', error);
+            this.showNotification('加载课程失败', 'error');
+        }
+    }
+
+    async loadGrades(filters = {}) {
+        try {
+            const queryParams = new URLSearchParams(filters).toString();
+            const url = `${this.apiBase}/teacher/grades${queryParams ? '?' + queryParams : ''}`;
+            
+            const response = await fetch(url, {
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                const data = await response.json();
+                if (data.success) {
+                    this.grades = data.grades;
+                    this.renderGradesTable();
+                }
+            }
+        } catch (error) {
+            console.error('加载成绩失败:', error);
+            this.showNotification('加载成绩失败', 'error');
+        }
+    }
+
+    populateCourseSelectors() {
+        // 填充课程选择器
+        const courseSelectors = document.querySelectorAll('.course-selector');
+        courseSelectors.forEach(select => {
+            select.innerHTML = '<option value="">请选择课程</option>';
+            this.courses.forEach(course => {
+                const option = document.createElement('option');
+                option.value = course.id;
+                option.textContent = `${course.course_code} - ${course.course_name}`;
+                select.appendChild(option);
+            });
+        });
+    }
+
+    renderGradesTable() {
+        const tableBody = document.getElementById('gradesTableBody');
+        if (!tableBody) return;
+
+        if (this.grades.length === 0) {
+            tableBody.innerHTML = `
+                <tr>
+                    <td colspan="9" class="text-center">
+                        <div class="no-data">
+                            <i class="fas fa-info-circle"></i>
+                            <p>暂无成绩数据</p>
+                        </div>
+                    </td>
+                </tr>
+            `;
+            return;
+        }
+
+        tableBody.innerHTML = this.grades.map(grade => {
+            const gradeClass = this.getGradeClass(grade.score);
+            return `
+                <tr>
+                    <td><input type="checkbox" class="grade-checkbox" data-id="${grade.id}"></td>
+                    <td>${grade.student_id}</td>
+                    <td>${grade.full_name}</td>
+                    <td>${grade.class_name}</td>
+                    <td>${grade.course_code}</td>
+                    <td>${grade.course_name}</td>
+                    <td class="grade-cell ${gradeClass}">
+                        <span class="grade-score">${grade.score}</span>
+                        <span class="grade-level">${grade.grade_level}</span>
+                    </td>
+                    <td>${grade.exam_date ? new Date(grade.exam_date).toLocaleDateString() : '未设置'}</td>
+                    <td>
+                        <div class="action-buttons">
+                            <button class="btn-edit" data-id="${grade.id}">
+                                <i class="fas fa-edit"></i> 编辑
+                            </button>
+                            <button class="btn-delete" data-id="${grade.id}">
+                                <i class="fas fa-trash"></i> 删除
+                            </button>
+                        </div>
+                    </td>
+                </tr>
+            `;
+        }).join('');
+
+        // 更新统计信息
+        this.updateStats();
+    }
+
+    getGradeClass(score) {
+        if (score >= 90) return 'grade-excellent';
+        if (score >= 80) return 'grade-good';
+        if (score >= 70) return 'grade-medium';
+        if (score >= 60) return 'grade-pass';
+        return 'grade-fail';
+    }
+
+    updateStats() {
+        if (this.grades.length === 0) return;
+
+        const totalStudents = new Set(this.grades.map(g => g.student_id)).size;
+        const avgScore = this.grades.reduce((sum, g) => sum + g.score, 0) / this.grades.length;
+        const passRate = (this.grades.filter(g => g.score >= 60).length / this.grades.length * 100).toFixed(1);
+
+        document.getElementById('totalStudents').textContent = totalStudents;
+        document.getElementById('avgScore').textContent = avgScore.toFixed(1);
+        document.getElementById('passRate').textContent = `${passRate}%`;
+    }
+
+    bindEvents() {
+        // 搜索按钮
+        document.getElementById('searchBtn')?.addEventListener('click', () => {
+            this.handleSearch();
+        });
+
+        // 重置按钮
+        document.getElementById('resetBtn')?.addEventListener('click', () => {
+            this.resetFilters();
+        });
+
+        // 导出按钮
+        document.getElementById('exportBtn')?.addEventListener('click', () => {
+            this.exportGrades();
+        });
+
+        // 批量删除按钮
+        document.getElementById('batchDeleteBtn')?.addEventListener('click', () => {
+            this.batchDeleteGrades();
+        });
+
+        // 表格操作按钮事件委托
+        document.addEventListener('click', (e) => {
+            if (e.target.closest('.btn-edit')) {
+                const gradeId = e.target.closest('.btn-edit').dataset.id;
+                this.editGrade(gradeId);
+            }
+            
+            if (e.target.closest('.btn-delete')) {
+                const gradeId = e.target.closest('.btn-delete').dataset.id;
+                this.deleteGrade(gradeId);
+            }
+        });
+
+        // 退出登录
+        document.getElementById('logoutBtn')?.addEventListener('click', () => {
+            this.handleLogout();
+        });
+    }
+
+    handleSearch() {
+        const className = document.getElementById('classFilter')?.value || '';
+        const courseId = document.getElementById('courseFilter')?.value || '';
+        
+        this.loadGrades({ class_name: className, course_id: courseId });
+    }
+
+    resetFilters() {
+        document.getElementById('classFilter').value = '';
+        document.getElementById('courseFilter').value = '';
+        this.loadGrades();
+    }
+
+    async exportGrades() {
+        try {
+            const response = await fetch(`${this.apiBase}/teacher/grades/export`, {
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                const blob = await response.blob();
+                const url = window.URL.createObjectURL(blob);
+                const a = document.createElement('a');
+                a.href = url;
+                a.download = `成绩报表_${new Date().toISOString().split('T')[0]}.xlsx`;
+                document.body.appendChild(a);
+                a.click();
+                document.body.removeChild(a);
+                window.URL.revokeObjectURL(url);
+            }
+        } catch (error) {
+            console.error('导出失败:', error);
+            this.showNotification('导出失败', 'error');
+        }
+    }
+
+    async batchDeleteGrades() {
+        const checkboxes = document.querySelectorAll('.grade-checkbox:checked');
+        if (checkboxes.length === 0) {
+            this.showNotification('请选择要删除的成绩', 'warning');
+            return;
+        }
+
+        if (!confirm(`确定要删除选中的 ${checkboxes.length} 条成绩记录吗？`)) {
+            return;
+        }
+
+        const gradeIds = Array.from(checkboxes).map(cb => cb.dataset.id);
+        
+        try {
+            const response = await fetch(`${this.apiBase}/teacher/grades/batch`, {
+                method: 'DELETE',
+                headers: { 'Content-Type': 'application/json' },
+                credentials: 'include',
+                body: JSON.stringify({ gradeIds })
+            });
+            
+            const data = await response.json();
+            if (data.success) {
+                this.showNotification(`成功删除 ${gradeIds.length} 条成绩记录`, 'success');
+                await this.loadGrades();
+            } else {
+                this.showNotification(data.message || '删除失败', 'error');
+            }
+        } catch (error) {
+            console.error('批量删除失败:', error);
+            this.showNotification('批量删除失败', 'error');
+        }
+    }
+
+    async editGrade(gradeId) {
+        const grade = this.grades.find(g => g.id == gradeId);
+        if (!grade) return;
+
+        // 这里可以打开编辑模态框
+        // 暂时使用简单提示框
+        const newScore = prompt('请输入新的分数:', grade.score);
+        if (newScore === null) return;
+
+        const numericScore = parseFloat(newScore);
+        if (isNaN(numericScore) || numericScore < 0 || numericScore > 100) {
+            this.showNotification('请输入0-100之间的有效分数', 'error');
+            return;
+        }
+
+        try {
+            const response = await fetch(`${this.apiBase}/teacher/grades/${gradeId}`, {
+                method: 'PUT',
+                headers: { 'Content-Type': 'application/json' },
+                credentials: 'include',
+                body: JSON.stringify({ 
+                    score: numericScore,
+                    examDate: grade.exam_date,
+                    remark: grade.remark
+                })
+            });
+            
+            const data = await response.json();
+            if (data.success) {
+                this.showNotification('成绩更新成功', 'success');
+                await this.loadGrades();
+            } else {
+                this.showNotification(data.message || '更新失败', 'error');
+            }
+        } catch (error) {
+            console.error('更新成绩失败:', error);
+            this.showNotification('更新成绩失败', 'error');
+        }
+    }
+
+    async deleteGrade(gradeId) {
+        if (!confirm('确定要删除这条成绩记录吗？')) {
+            return;
+        }
+
+        try {
+            const response = await fetch(`${this.apiBase}/teacher/grades/${gradeId}`, {
+                method: 'DELETE',
+                credentials: 'include'
+            });
+            
+            const data = await response.json();
+            if (data.success) {
+                this.showNotification('成绩删除成功', 'success');
+                await this.loadGrades();
+            } else {
+                this.showNotification(data.message || '删除失败', 'error');
+            }
+        } catch (error) {
+            console.error('删除成绩失败:', error);
+            this.showNotification('删除成绩失败', 'error');
+        }
+    }
+
+    async handleLogout() {
+        try {
+            const response = await fetch(`${this.apiBase}/auth/logout`, {
+                method: 'POST',
+                credentials: 'include'
+            });
+            
+            if (response.ok) {
+                window.location.href = '/frontend/html/login.html';
+            }
+        } catch (error) {
+            console.error('退出登录失败:', error);
+        }
+    }
+
+    updateUI() {
+        // 更新用户信息
+        if (this.currentUser) {
+            const userInfoElements = document.querySelectorAll('.user-info');
+            userInfoElements.forEach(el => {
+                el.textContent = `${this.currentUser.full_name} (${this.currentUser.role})`;
+            });
+        }
+    }
+
+    showNotification(message, type = 'info') {
+        // 使用AuthManager的通知系统或简单alert
+        if (typeof AuthManager !== 'undefined' && AuthManager.showNotification) {
+            AuthManager.showNotification(message, type);
+        } else {
+            alert(`${type}: ${message}`);
+        }
+    }
+}
+
+// 页面加载完成后初始化
+document.addEventListener('DOMContentLoaded', () => {
+    if (window.location.pathname.includes('/teacher/')) {
+        new TeacherDashboard();
+    }
+});