feat: 实现教师资料更新、操作日志和系统设置功能
新增教师资料更新功能，包括个人信息修改和密码更新 添加操作日志记录系统，记录用户关键操作 实现系统设置模块，支持动态配置系统参数 重构数据库模型，新增教师表和系统设置表 优化成绩录入逻辑，支持平时分、期中和期末成绩计算 添加数据导出功能，支持学生、教师和成绩数据导出 完善管理员后台，增加统计图表和操作日志查看
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祀梦
343
backend/init_db.js
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343
backend/init_db.js
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const sqlite3 = require('sqlite3').verbose();
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const path = require('path');
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const bcrypt = require('bcryptjs');
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const dbPath = path.resolve(__dirname, 'database.sqlite');
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const db = new sqlite3.Database(dbPath);
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const run = (sql, params = []) => {
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return new Promise((resolve, reject) => {
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db.run(sql, params, function(err) {
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if (err) reject(err);
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else resolve(this);
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});
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});
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};
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const insertUser = async (user) => {
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await run(
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'INSERT INTO users (id, name, password, role, class) VALUES (?, ?, ?, ?, ?)',
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[user.id, user.name, user.password, user.role, user.class]
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);
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};
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const insertStudent = async (student) => {
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await run(
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'INSERT INTO students (id, name, class, major, grade, contact_info) VALUES (?, ?, ?, ?, ?, ?)',
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[student.id, student.name, student.class, student.major, student.grade, student.contact_info]
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);
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};
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const insertClass = async (cls) => {
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return await run(
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'INSERT INTO classes (class_name, grade, major, teacher_id) VALUES (?, ?, ?, ?)',
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[cls.class_name, cls.grade, cls.major, cls.teacher_id]
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);
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};
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const insertCourse = async (course) => {
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return await run(
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'INSERT INTO courses (course_code, course_name, credit, teacher_id, class_id, semester, academic_year, category) VALUES (?, ?, ?, ?, ?, ?, ?, ?)',
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[course.course_code, course.course_name, course.credit, course.teacher_id, course.class_id, course.semester, course.academic_year, course.category]
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);
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};
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const insertGrade = async (grade) => {
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await run(
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`INSERT INTO grades (
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student_id, course_id, teacher_id,
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usual_score, midterm_score, final_score, total_score,
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grade_point, grade_level, remark
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
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[
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grade.student_id, grade.course_id, grade.teacher_id,
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grade.usual_score, grade.midterm_score, grade.final_score, grade.total_score,
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grade.grade_point, grade.grade_level, grade.remark
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]
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);
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};
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// Helper to calculate grade point
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const calculateGradePoint = (score) => {
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if (score >= 90) return 4.0;
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if (score >= 85) return 3.7;
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if (score >= 82) return 3.3;
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if (score >= 78) return 3.0;
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if (score >= 75) return 2.7;
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if (score >= 72) return 2.3;
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if (score >= 68) return 2.0;
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if (score >= 64) return 1.5;
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if (score >= 60) return 1.0;
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return 0.0;
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};
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const calculateGradeLevel = (score) => {
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if (score >= 90) return 'A';
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if (score >= 80) return 'B';
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if (score >= 70) return 'C';
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if (score >= 60) return 'D';
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return 'F';
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};
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const init = async () => {
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console.log('开始初始化 SQLite 数据库...');
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const hashedPassword = await bcrypt.hash('123456', 10);
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try {
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// Drop tables
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await run('DROP TABLE IF EXISTS grades');
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await run('DROP TABLE IF EXISTS courses');
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await run('DROP TABLE IF EXISTS classes');
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await run('DROP TABLE IF EXISTS students');
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await run('DROP TABLE IF EXISTS users');
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await run('DROP TABLE IF EXISTS operation_logs');
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// Create tables
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console.log('创建表结构...');
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await run(`
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CREATE TABLE users (
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id TEXT PRIMARY KEY,
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name TEXT NOT NULL,
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password TEXT NOT NULL,
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role TEXT NOT NULL,
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class TEXT,
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created_at TEXT DEFAULT (datetime('now', 'localtime'))
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)
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`);
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await run(`
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CREATE TABLE students (
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id TEXT PRIMARY KEY,
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name TEXT NOT NULL,
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class TEXT,
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major TEXT,
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grade TEXT,
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contact_info TEXT,
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FOREIGN KEY (id) REFERENCES users(id) ON DELETE CASCADE
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)
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`);
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await run(`
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CREATE TABLE classes (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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class_name TEXT NOT NULL,
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grade TEXT,
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major TEXT,
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teacher_id TEXT,
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created_at TEXT DEFAULT (datetime('now', 'localtime'))
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)
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`);
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await run(`
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CREATE TABLE courses (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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course_code TEXT UNIQUE NOT NULL,
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course_name TEXT NOT NULL,
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credit REAL DEFAULT 2.0,
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teacher_id TEXT NOT NULL,
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class_id INTEGER NOT NULL,
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semester TEXT,
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academic_year TEXT,
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category TEXT,
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created_at TEXT DEFAULT (datetime('now', 'localtime'))
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)
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`);
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await run(`
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CREATE TABLE grades (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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student_id TEXT NOT NULL,
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course_id INTEGER NOT NULL,
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teacher_id TEXT NOT NULL,
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usual_score REAL,
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midterm_score REAL,
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final_score REAL,
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total_score REAL,
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grade_point REAL,
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grade_level TEXT,
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remark TEXT,
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created_at TEXT DEFAULT (datetime('now', 'localtime')),
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UNIQUE(student_id, course_id)
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)
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`);
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await run(`
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CREATE TABLE operation_logs (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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user_id TEXT,
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operation_type TEXT,
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operation_target TEXT,
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description TEXT,
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ip_address TEXT,
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created_at TEXT DEFAULT (datetime('now', 'localtime'))
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)
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`);
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console.log('生成基础数据...');
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// 1. Admin
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await insertUser({
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id: 'admin',
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name: '系统管理员',
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password: hashedPassword,
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role: 'admin',
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class: null
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});
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// 2. Teachers (20 teachers)
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const teachers = [];
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for (let i = 1; i <= 20; i++) {
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const id = `T${1000 + i}`;
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const name = `教师${String.fromCharCode(65 + (i % 26))}${i}`;
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await insertUser({
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id,
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name,
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password: hashedPassword,
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role: 'teacher',
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class: null
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});
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teachers.push(id);
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}
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// 3. Classes (10 classes)
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const majors = ['软件工程', '计算机科学', '信息管理'];
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const classIds = [];
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const classes = [];
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for (let i = 1; i <= 10; i++) {
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const major = majors[i % 3];
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const gradeYear = 2021 + Math.floor((i-1)/5); // 2021, 2022
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const className = `${major.substr(0, 2)}${gradeYear}${String(i).padStart(2, '0')}`;
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const teacherId = teachers[i % teachers.length];
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const result = await insertClass({
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class_name: className,
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grade: String(gradeYear),
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major: major,
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teacher_id: teacherId
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});
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classIds.push(result.lastID);
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classes.push({ id: result.lastID, name: className, year: gradeYear, major });
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}
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// 4. Students (50 per class -> 500 students)
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console.log('生成学生数据...');
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const students = [];
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for (let clsIdx = 0; clsIdx < classes.length; clsIdx++) {
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const cls = classes[clsIdx];
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for (let i = 1; i <= 50; i++) {
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const id = `${cls.year}${String(clsIdx + 1).padStart(2, '0')}${String(i).padStart(3, '0')}`;
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const name = `学生${cls.name.substr(0,1)}${i}`;
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await insertUser({
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id,
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name,
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password: hashedPassword,
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role: 'student',
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class: cls.name
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});
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await insertStudent({
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id,
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name,
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class: cls.name,
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major: cls.major,
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grade: String(cls.year),
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contact_info: `13800${id.substr(0, 6)}`
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});
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students.push({ id, classId: cls.id });
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}
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}
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// 5. Courses and Grades
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console.log('生成课程和成绩数据...');
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const courseNames = [
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{ name: '高等数学', credit: 4, category: '必修' },
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{ name: '大学英语', credit: 3, category: '必修' },
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{ name: '程序设计基础', credit: 4, category: '必修' },
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{ name: '数据结构', credit: 4, category: '必修' },
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{ name: '操作系统', credit: 3, category: '必修' },
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{ name: '计算机网络', credit: 3, category: '必修' },
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{ name: '数据库原理', credit: 3, category: '必修' },
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{ name: '软件工程导论', credit: 2, category: '必修' },
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{ name: 'Web开发技术', credit: 3, category: '选修' },
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{ name: '人工智能基础', credit: 2, category: '选修' },
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{ name: '大数据分析', credit: 2, category: '选修' },
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{ name: '音乐鉴赏', credit: 1, category: '通识' },
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{ name: '心理健康', credit: 1, category: '通识' },
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{ name: '职业规划', credit: 1, category: '通识' }
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];
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const semesters = ['2021-2022-1', '2021-2022-2', '2022-2023-1', '2022-2023-2', '2023-2024-1'];
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for (const cls of classes) {
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// For each class, assign some courses
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for (let semIdx = 0; semIdx < semesters.length; semIdx++) {
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const semester = semesters[semIdx];
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// Select random 5-8 courses for this semester
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const semCourses = courseNames.sort(() => 0.5 - Math.random()).slice(0, 6);
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for (const cTemplate of semCourses) {
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const teacherId = teachers[Math.floor(Math.random() * teachers.length)];
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const courseCode = `C${cls.id}${semIdx}${Math.floor(Math.random() * 1000)}`;
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const result = await insertCourse({
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course_code: courseCode,
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course_name: cTemplate.name,
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credit: cTemplate.credit,
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teacher_id: teacherId,
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class_id: cls.id,
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semester: semester,
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academic_year: semester.substring(0, 9),
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category: cTemplate.category
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});
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const courseId = result.lastID;
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// Generate grades for students in this class
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const classStudents = students.filter(s => s.classId === cls.id);
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// Batch insert could be faster, but let's keep it simple for now
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const stmt = db.prepare(`INSERT INTO grades (
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student_id, course_id, teacher_id,
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usual_score, midterm_score, final_score, total_score,
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grade_point, grade_level, remark
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`);
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for (const stu of classStudents) {
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// 90% chance to have a grade
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if (Math.random() > 0.1) {
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const totalScore = Math.floor(Math.random() * 40) + 60; // 60-100 mostly
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// 10% chance to fail
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const finalTotal = Math.random() > 0.1 ? totalScore : Math.floor(Math.random() * 59);
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stmt.run([
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stu.id,
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courseId,
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teacherId,
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finalTotal, // usual
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finalTotal, // midterm
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finalTotal, // final
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finalTotal, // total
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calculateGradePoint(finalTotal),
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calculateGradeLevel(finalTotal),
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''
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]);
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}
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}
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stmt.finalize();
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}
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}
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}
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console.log('数据库初始化完成！');
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db.close();
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} catch (err) {
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console.error('Initialization failed:', err);
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process.exit(1);
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}
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};
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init();
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