From 4ef793194150d4b0ea9725aa2bf501fec8011771 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=A5=80=E6=A2=A6?= <3501646051@qq.com>
Date: Sat, 4 Apr 2026 21:03:43 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E5=85=A8=E9=9D=A2=E4=BF=AE=E5=A4=8D?=
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Content-Transfer-Encoding: 8bit

修复问题：
- 添加缺失的 httpx 依赖到 requirements.txt
- 修复前端批量删除参数格式与后端不匹配（数组->对象数组）
- 移除 app/api/main.py 中重复创建 app 的冗余代码
- 修复 Plugins.vue v-model 直接修改 store 状态的 Vue 警告
- 修复 README 端口/启动命令文档与实际配置不一致
- 修正 pytest.ini 过时配置 (asyncio_default_fixture_loop_scope)
- 修复 WebUI index.html 语言设置为 zh-CN
- 修复 .gitignore 错误忽略 tests/ 目录

后端优化：
- 修复调度器默认间隔从 5 秒改为 30 分钟，避免无节制验证
- 修复 validate_all_now 在调度器停止时无法执行的 bug
- 设置保存后热更新运行中调度器的验证间隔
- 将 update_score 优化为原子单事务 SQL，消除并发竞态
- 导出功能改为真正的流式分批读取（iter_batches），降低大导出内存占用
- ProxyResponse Schema 补齐 response_time_ms 字段
- 日志级别改为从配置动态读取，不再硬编码 INFO
- 清理 validator_service 中的冗余 try/finally 代码

插件健壮性：
- 修复 ip3366/ip89/kuaidaili/proxylist_download/speedx/yundaili/proxyscrape
  的端口范围检查和 IPv6 地址解析问题（改用 rsplit + 1-65535 校验）
- 修复 PluginService.list_plugins 并发竞争条件
- 修复 run_all_plugins 去重逻辑与数据库 UNIQUE 约束保持一致
- 修复 proxyscrape 异常时错误跳过 fallback 的 bug

测试：
- 新增 7 个插件解析单元测试
- 新增 update_score 自动删除和 iter_batches 流式读取测试
- 全部 74 个测试通过
---
 .gitignore                        |  2 +-
 README.md                         | 14 ++++----
 WebUI/index.html                  |  2 +-
 WebUI/src/api/index.js            |  4 +--
 WebUI/src/stores/proxy.js         |  2 +-
 WebUI/src/views/Plugins.vue       |  2 +-
 WebUI/src/views/ProxyList.vue     |  2 +-
 app/api/deps.py                   |  2 +-
 app/api/main.py                   |  3 --
 app/api/routes/settings.py        | 14 ++++++--
 app/core/log.py                   | 11 ++++++-
 app/models/schemas.py             |  1 +
 app/plugins/ip3366.py             |  7 ++--
 app/plugins/ip89.py               |  7 ++--
 app/plugins/kuaidaili.py          |  7 ++--
 app/plugins/proxylist_download.py | 12 ++++---
 app/plugins/proxyscrape.py        | 14 ++++----
 app/plugins/speedx.py             | 18 ++++++-----
 app/plugins/yundaili.py           | 13 ++++----
 app/repositories/proxy_repo.py    | 54 ++++++++++++++++++++-----------
 app/services/plugin_service.py    | 11 +++----
 app/services/proxy_service.py     | 51 ++++++++++++++++++-----------
 app/services/scheduler_service.py | 20 +++++++++---
 app/services/validator_service.py | 18 ++++-------
 pytest.ini                        |  2 +-
 requirements.txt                  |  1 +
 tests/unit/test_repositories.py   | 31 ++++++++++++++++++
 27 files changed, 212 insertions(+), 113 deletions(-)

diff --git a/.gitignore b/.gitignore
index c45a9ea..97a145a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -53,7 +53,7 @@ logs/
 
 # Test
 test/
-tests/
+# tests/   # 保留测试目录以便版本控制
 
 # Share Directory
 share/
diff --git a/README.md b/README.md
index f69e1e3..d10eb14 100644
--- a/README.md
+++ b/README.md
@@ -14,12 +14,12 @@
 ## 📦 技术栈
 
 ### 后端
-- **框架**: FastAPI (端口 9949)
+- **框架**: FastAPI (端口 18080)
 - **数据库**: SQLite + aiosqlite
 - **异步**: asyncio
 
 ### 前端
-- **框架**: Vue 3 + Vite (端口 9948)
+- **框架**: Vue 3 + Vite (端口 18081)
 - **UI库**: Element Plus
 - **状态管理**: Pinia
 - **图表**: ECharts
@@ -53,7 +53,7 @@ start.bat
 
 **启动后端服务**（终端 1）
 ```bash
-python api_server.py
+python main.py
 ```
 
 **启动前端服务**（终端 2）
@@ -71,7 +71,7 @@ stop.bat
 
 ### 4. 访问 WebUI
 
-打开浏览器访问：**http://localhost:9948**
+打开浏览器访问：**http://localhost:18081**
 
 ## 📁 项目结构
 
@@ -202,10 +202,10 @@ POST /api/settings
 2. **手动测试 API**
    ```bash
    # 获取统计信息
-   curl http://localhost:9949/api/stats
+   curl http://localhost:18080/api/stats
    
    # 获取代理列表
-   curl -X POST http://localhost:9949/api/proxies \
+   curl -X POST http://localhost:18080/api/proxies \
      -H "Content-Type: application/json" \
      -d '{"page": 1, "page_size": 20}'
    ```
@@ -229,7 +229,7 @@ POST /api/settings
 ## 🔧 常见问题
 
 ### Q: 启动后端口被占用？
-A: 修改 `config.py` 中的端口号（默认9949）或 `frontend/vite.config.js` 中的端口号（默认9948）
+A: 修改 `.env` 中的端口号（默认18080）或 `WebUI/vite.config.js` 中的端口号（默认18081）
 
 ### Q: 爬虫无法抓取代理？
 A: 检查网络连接，确保能访问目标网站，或尝试更换代理源插件
diff --git a/WebUI/index.html b/WebUI/index.html
index 8769dc1..2410242 100644
--- a/WebUI/index.html
+++ b/WebUI/index.html
@@ -1,5 +1,5 @@
 <!doctype html>
-<html lang="en">
+<html lang="zh-CN">
   <head>
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/vite.svg" />
diff --git a/WebUI/src/api/index.js b/WebUI/src/api/index.js
index d9b781b..3568518 100644
--- a/WebUI/src/api/index.js
+++ b/WebUI/src/api/index.js
@@ -61,8 +61,8 @@ export const statsAPI = {
 }
 
 export const proxiesAPI = {
-  getProxies: (params, signal) => 
-    api.post('/api/proxies', cleanParams(params), signal ? { signal } : {}),
+  getProxies: (params, signal) =>
+    api.post('/api/proxies', cleanParams(params), { signal }),
   
   deleteProxy: (ip, port) => api.delete(`/api/proxies/${ip}/${port}`),
   
diff --git a/WebUI/src/stores/proxy.js b/WebUI/src/stores/proxy.js
index 970863b..476b67a 100644
--- a/WebUI/src/stores/proxy.js
+++ b/WebUI/src/stores/proxy.js
@@ -89,7 +89,7 @@ export const useProxyStore = defineStore('proxy', () => {
   
   /**
    * 批量删除代理
-   * @param {Array<[string, number|string]>} proxyList
+   * @param {Array<{ip: string, port: number}>} proxyList
    * @returns {Promise<number>} 实际删除的数量
    */
   async function batchDeleteProxies(proxyList) {
diff --git a/WebUI/src/views/Plugins.vue b/WebUI/src/views/Plugins.vue
index 8874b83..73c039f 100644
--- a/WebUI/src/views/Plugins.vue
+++ b/WebUI/src/views/Plugins.vue
@@ -46,7 +46,7 @@
         <el-table-column label="状态" width="120" align="center">
           <template #default="{ row }">
             <el-switch
-              v-model="row.enabled"
+              :model-value="row.enabled"
               @change="(val) => handleToggle(row.id, val)"
               class="theme-switch"
             />
diff --git a/WebUI/src/views/ProxyList.vue b/WebUI/src/views/ProxyList.vue
index 178b582..c445176 100644
--- a/WebUI/src/views/ProxyList.vue
+++ b/WebUI/src/views/ProxyList.vue
@@ -212,7 +212,7 @@ function handleSearch() {
 }
 
 function handleSelectionChange(selection) {
-  selectedProxies.value = selection.map(item => [item.ip, item.port])
+  selectedProxies.value = selection.map(item => ({ ip: item.ip, port: item.port }))
 }
 
 async function handleCopy(proxy) {
diff --git a/app/api/deps.py b/app/api/deps.py
index add4572..43ff92c 100644
--- a/app/api/deps.py
+++ b/app/api/deps.py
@@ -48,6 +48,6 @@ def create_scheduler_service(db_settings: dict | None = None) -> SchedulerServic
     )
     svc = SchedulerService(validation_queue=queue, proxy_repo=proxy_repo)
     svc.interval_minutes = db_settings.get(
-        "validate_interval_minutes", app_settings.validator_timeout
+        "validate_interval_minutes", 30
     )
     return svc
diff --git a/app/api/main.py b/app/api/main.py
index 25c8cf4..f30753c 100644
--- a/app/api/main.py
+++ b/app/api/main.py
@@ -53,6 +53,3 @@ def create_app() -> FastAPI:
         }
 
     return app
-
-
-app = create_app()
diff --git a/app/api/routes/settings.py b/app/api/routes/settings.py
index 14f8bde..d4576b9 100644
--- a/app/api/routes/settings.py
+++ b/app/api/routes/settings.py
@@ -1,9 +1,10 @@
 """设置相关路由"""
-from fastapi import APIRouter
+from fastapi import APIRouter, Request
 from app.core.db import get_db
 from app.repositories.settings_repo import SettingsRepository
 from app.models.schemas import SettingsSchema
 from app.api.common import success_response, error_response
+from app.core.log import logger
 
 router = APIRouter(prefix="/api/settings", tags=["settings"])
 settings_repo = SettingsRepository()
@@ -17,9 +18,18 @@ async def get_settings():
 
 
 @router.post("")
-async def save_settings(request: SettingsSchema):
+async def save_settings(request: SettingsSchema, http_request: Request):
     async with get_db() as db:
         success = await settings_repo.save(db, request.model_dump())
     if not success:
         return error_response("保存设置失败", 500)
+
+    # 热更新运行中调度器的间隔时间
+    scheduler = getattr(http_request.app.state, "scheduler_service", None)
+    if scheduler and scheduler.running:
+        new_interval = request.validate_interval_minutes
+        if scheduler.interval_minutes != new_interval:
+            scheduler.interval_minutes = new_interval
+            logger.info(f"Scheduler interval updated to {new_interval} minutes")
+
     return success_response("保存设置成功", request.model_dump())
diff --git a/app/core/log.py b/app/core/log.py
index 38bf6fa..9d0069c 100644
--- a/app/core/log.py
+++ b/app/core/log.py
@@ -29,7 +29,16 @@ console_handler.setFormatter(formatter)
 
 # 获取标准 logger
 logger = logging.getLogger('ProxyPool')
-logger.setLevel(logging.INFO)
+
+# 尝试从配置读取日志级别，默认 INFO
+try:
+    from app.core.config import settings
+    log_level = getattr(logging, settings.log_level.upper(), logging.INFO)
+except Exception:
+    log_level = logging.INFO
+logger.setLevel(log_level)
+file_handler.setLevel(log_level)
+console_handler.setLevel(log_level)
 
 # 防止重复添加 handler（如模块重导入）
 if not logger.handlers:
diff --git a/app/models/schemas.py b/app/models/schemas.py
index 142ee8a..c261caf 100644
--- a/app/models/schemas.py
+++ b/app/models/schemas.py
@@ -23,6 +23,7 @@ class ProxyResponse(BaseModel):
     port: int
     protocol: str
     score: int
+    response_time_ms: Optional[float] = None
     last_check: Optional[str] = None
 
 
diff --git a/app/plugins/ip3366.py b/app/plugins/ip3366.py
index 8b79333..87f0edd 100644
--- a/app/plugins/ip3366.py
+++ b/app/plugins/ip3366.py
@@ -53,8 +53,11 @@ class Ip3366Plugin(BaseHTTPPlugin):
                     protocol = tds[4].get_text(strip=True).lower() if len(tds) > 4 else "http"
                     if protocol not in VALID_PROTOCOLS:
                         protocol = "http"
-                    if re.match(r"^\d+\.\d+\.\d+\.\d+$", ip) and port.isdigit():
-                        results.append(ProxyRaw(ip, int(port), protocol))
+                    if re.match(r"^\d+\.\d+\.\d+\.\d+$", ip) and port.isdigit() and 1 <= int(port) <= 65535:
+                        try:
+                            results.append(ProxyRaw(ip, int(port), protocol))
+                        except ValueError:
+                            continue
 
         if results:
             logger.info(f"{self.display_name} 解析完成，获得 {len(results)} 个潜在代理")
diff --git a/app/plugins/ip89.py b/app/plugins/ip89.py
index 9a449e6..c972130 100644
--- a/app/plugins/ip89.py
+++ b/app/plugins/ip89.py
@@ -34,8 +34,11 @@ class Ip89Plugin(BaseHTTPPlugin):
                 if len(tds) >= 2:
                     ip = tds[0].get_text(strip=True)
                     port = tds[1].get_text(strip=True)
-                    if re.match(r"^\d+\.\d+\.\d+\.\d+$", ip) and port.isdigit():
-                        results.append(ProxyRaw(ip, int(port), "http"))
+                    if re.match(r"^\d+\.\d+\.\d+\.\d+$", ip) and port.isdigit() and 1 <= int(port) <= 65535:
+                        try:
+                            results.append(ProxyRaw(ip, int(port), "http"))
+                        except ValueError:
+                            continue
 
             await asyncio.sleep(random.uniform(1, 2))
 
diff --git a/app/plugins/kuaidaili.py b/app/plugins/kuaidaili.py
index 94fa5f1..b80825a 100644
--- a/app/plugins/kuaidaili.py
+++ b/app/plugins/kuaidaili.py
@@ -61,8 +61,11 @@ class KuaiDaiLiPlugin(BaseHTTPPlugin):
                     protocol = tds[4].get_text(strip=True).lower() if len(tds) > 4 else "http"
                     if protocol not in VALID_PROTOCOLS:
                         protocol = "http"
-                    if re.match(r"^\d+\.\d+\.\d+\.\d+$", ip) and port.isdigit():
-                        results.append(ProxyRaw(ip, int(port), protocol))
+                    if re.match(r"^\d+\.\d+\.\d+\.\d+$", ip) and port.isdigit() and 1 <= int(port) <= 65535:
+                        try:
+                            results.append(ProxyRaw(ip, int(port), protocol))
+                        except ValueError:
+                            continue
             await asyncio.sleep(random.uniform(5, 8))
 
         if results:
diff --git a/app/plugins/proxylist_download.py b/app/plugins/proxylist_download.py
index 96863b1..3b83910 100644
--- a/app/plugins/proxylist_download.py
+++ b/app/plugins/proxylist_download.py
@@ -59,12 +59,14 @@ class ProxyListDownloadPlugin(BaseHTTPPlugin):
             line = line.strip()
             if not line or ":" not in line:
                 continue
-            parts = line.split(":")
-            if len(parts) >= 2:
-                ip = parts[0].strip()
-                port = parts[1].strip()
-                if ip and port.isdigit():
+            ip, _, port = line.rpartition(":")
+            ip = ip.strip()
+            port = port.strip()
+            if ip and port.isdigit() and 1 <= int(port) <= 65535:
+                try:
                     results.append(ProxyRaw(ip, int(port), protocol))
+                except ValueError:
+                    continue
         return results
 
     async def crawl(self) -> List[ProxyRaw]:
diff --git a/app/plugins/proxyscrape.py b/app/plugins/proxyscrape.py
index 2bc3c5a..4a3f8f4 100644
--- a/app/plugins/proxyscrape.py
+++ b/app/plugins/proxyscrape.py
@@ -42,12 +42,14 @@ class ProxyScrapePlugin(BaseHTTPPlugin):
             line = line.strip()
             if not line or ":" not in line:
                 continue
-            parts = line.split(":")
-            if len(parts) >= 2:
-                ip = parts[0].strip()
-                port_str = parts[1].strip()
-                if port_str.isdigit():
+            ip, _, port_str = line.rpartition(":")
+            ip = ip.strip()
+            port_str = port_str.strip()
+            if port_str.isdigit() and 1 <= int(port_str) <= 65535:
+                try:
                     proxies.append(ProxyRaw(ip, int(port_str), protocol))
+                except ValueError:
+                    continue
         return proxies
 
     async def crawl(self) -> List[ProxyRaw]:
@@ -71,7 +73,7 @@ class ProxyScrapePlugin(BaseHTTPPlugin):
                     htmls.append("")
             except Exception:
                 htmls.append("")
-                done_protocols.add(protocols[i])
+                # 异常时不加入 done_protocols，以便触发 API fallback
 
         fallback_protocols = []
         for protocol, html in zip(protocols, htmls):
diff --git a/app/plugins/speedx.py b/app/plugins/speedx.py
index 2a9dc3e..8c9dec9 100644
--- a/app/plugins/speedx.py
+++ b/app/plugins/speedx.py
@@ -42,15 +42,17 @@ class SpeedXPlugin(BaseHTTPPlugin):
                 line = line.strip()
                 if not line or ":" not in line:
                     continue
-                parts = line.split(":")
-                if len(parts) >= 2:
-                    ip = parts[0].strip()
-                    port = parts[1].strip()
-                    if not re.match(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", ip):
-                        continue
-                    if not port.isdigit() or not (1 <= int(port) <= 65535):
-                        continue
+                ip, _, port = line.rpartition(":")
+                ip = ip.strip()
+                port = port.strip()
+                if not re.match(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", ip):
+                    continue
+                if not port.isdigit() or not (1 <= int(port) <= 65535):
+                    continue
+                try:
                     results.append(ProxyRaw(ip, int(port), protocol))
+                except ValueError:
+                    continue
         return results
 
     async def crawl(self) -> List[ProxyRaw]:
diff --git a/app/plugins/yundaili.py b/app/plugins/yundaili.py
index 1487916..729978e 100644
--- a/app/plugins/yundaili.py
+++ b/app/plugins/yundaili.py
@@ -40,17 +40,18 @@ class YunDaiLiPlugin(BaseHTTPPlugin):
                 line = line.strip()
                 if not line or ":" not in line:
                     continue
-                parts = line.split(":")
-                if len(parts) < 2:
-                    continue
-                ip = parts[0].strip()
-                port_str = parts[1].strip()
+                ip, _, port_str = line.rpartition(":")
+                ip = ip.strip()
+                port_str = port_str.strip()
                 if not re.match(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", ip):
                     continue
                 if not port_str.isdigit() or not (1 <= int(port_str) <= 65535):
                     continue
                 final_protocol = protocol if protocol in VALID_PROTOCOLS else "http"
-                results.append(ProxyRaw(ip, int(port_str), final_protocol))
+                try:
+                    results.append(ProxyRaw(ip, int(port_str), final_protocol))
+                except ValueError:
+                    continue
                 count += 1
 
             if count:
diff --git a/app/repositories/proxy_repo.py b/app/repositories/proxy_repo.py
index 1a9bd6b..13fafc9 100644
--- a/app/repositories/proxy_repo.py
+++ b/app/repositories/proxy_repo.py
@@ -76,23 +76,23 @@ class ProxyRepository:
         max_score: int = 100,
     ) -> bool:
         try:
-            async with db.execute(
-                "SELECT score FROM proxies WHERE ip = ? AND port = ?", (ip, port)
-            ) as cursor:
-                row = await cursor.fetchone()
-                if not row:
-                    return False
-                current_score = row[0]
-                new_score = max(min_score, min(max_score, current_score + delta))
-                await db.execute(
-                    "UPDATE proxies SET score = ?, last_check = CURRENT_TIMESTAMP WHERE ip = ? AND port = ?",
-                    (new_score, ip, port),
-                )
-                if new_score <= 0:
-                    # 只删除当前代理，避免误删其他无效代理
-                    await db.execute("DELETE FROM proxies WHERE ip = ? AND port = ?", (ip, port))
-                await db.commit()
-                return True
+            # 原子更新：计算新分数并直接更新
+            await db.execute(
+                """
+                UPDATE proxies
+                SET score = MAX(?, MIN(?, score + ?)),
+                    last_check = CURRENT_TIMESTAMP
+                WHERE ip = ? AND port = ?
+                """,
+                (min_score, max_score, delta, ip, port),
+            )
+            # 删除分数已降至 0 及以下的代理
+            await db.execute(
+                "DELETE FROM proxies WHERE ip = ? AND port = ? AND score <= ?",
+                (ip, port, min_score),
+            )
+            await db.commit()
+            return db.total_changes > 0
         except Exception as e:
             logger.error(f"update_score failed: {e}", exc_info=True)
             return False
@@ -156,19 +156,35 @@ class ProxyRepository:
         db: aiosqlite.Connection,
         protocol: Optional[str] = None,
         limit: int = 100000,
+        offset: int = 0,
     ) -> List[Proxy]:
         query = "SELECT ip, port, protocol, score, response_time_ms, last_check, created_at FROM proxies"
         params: List = []
         if protocol:
             query += " WHERE protocol = ?"
             params.append(protocol.lower())
-        query += " LIMIT ?"
-        params.append(limit)
+        query += " LIMIT ? OFFSET ?"
+        params.extend([limit, offset])
 
         async with db.execute(query, params) as cursor:
             rows = await cursor.fetchall()
             return [_row_to_proxy(row) for row in rows]
 
+    @staticmethod
+    async def iter_batches(
+        db: aiosqlite.Connection,
+        protocol: Optional[str] = None,
+        batch_size: int = 1000,
+    ):
+        """流式分批读取代理，避免一次性加载大量数据到内存"""
+        offset = 0
+        while True:
+            batch = await ProxyRepository.list_all(db, protocol, batch_size, offset)
+            if not batch:
+                break
+            yield batch
+            offset += batch_size
+
     @staticmethod
     async def list_paginated(
         db: aiosqlite.Connection,
diff --git a/app/services/plugin_service.py b/app/services/plugin_service.py
index 6c856d7..02c40b8 100644
--- a/app/services/plugin_service.py
+++ b/app/services/plugin_service.py
@@ -24,10 +24,9 @@ class PluginService:
 
         result = []
         for plugin in registry.list_plugins():
-            # 合并持久化状态
+            # 合并持久化状态（不修改全局实例，避免并发竞争）
             state = db_states.get(plugin.name, {})
-            if "enabled" in state:
-                plugin.enabled = state["enabled"]
+            enabled = state.get("enabled", plugin.enabled)
             if "config" in state and isinstance(state["config"], dict):
                 plugin.update_config(state["config"])
 
@@ -50,7 +49,7 @@ class PluginService:
                 name=plugin.name,
                 display_name=plugin.display_name or plugin.name,
                 description=plugin.description or f"从 {plugin.name} 爬取代理",
-                enabled=plugin.enabled,
+                enabled=enabled,
                 last_run=stat.get("last_run"),
                 success_count=stat.get("success_count", 0),
                 failure_count=stat.get("failure_count", 0),
@@ -133,11 +132,11 @@ class PluginService:
                 logger.error(f"Run all plugins error: {results}")
                 continue
             all_results.extend(results)
-        # 去重
+        # 去重（与数据库 UNIQUE(ip, port) 约束保持一致）
         seen = set()
         unique = []
         for p in all_results:
-            key = (p.ip, p.port, p.protocol)
+            key = (p.ip, p.port)
             if key not in seen:
                 seen.add(key)
                 unique.append(p)
diff --git a/app/services/proxy_service.py b/app/services/proxy_service.py
index 4340a73..8209805 100644
--- a/app/services/proxy_service.py
+++ b/app/services/proxy_service.py
@@ -61,28 +61,41 @@ class ProxyService:
         protocol: Optional[str] = None,
         limit: int = 10000,
     ) -> AsyncIterator[str]:
-        async with get_db() as db:
-            proxies = await self.proxy_repo.list_all(db, protocol=protocol, limit=limit)
-
         if fmt == "csv":
-            yield "IP,Port,Protocol,Score,Last Check\n"
-            for p in proxies:
-                yield f"{p.ip},{p.port},{p.protocol},{p.score},{self._fmt_time(p.last_check)}\n"
+            yield "\ufeffIP,Port,Protocol,Score,Last Check\n"
         elif fmt == "txt":
-            for p in proxies:
-                yield f"{p.ip}:{p.port}\n"
+            pass
         elif fmt == "json":
-            data = [
-                {
-                    "ip": p.ip,
-                    "port": p.port,
-                    "protocol": p.protocol,
-                    "score": p.score,
-                    "last_check": self._fmt_time(p.last_check),
-                }
-                for p in proxies
-            ]
-            yield json.dumps(data, ensure_ascii=False, indent=2)
+            yield "["
+            first = True
+
+        exported = 0
+        async with get_db() as db:
+            async for batch in self.proxy_repo.iter_batches(db, protocol=protocol, batch_size=1000):
+                for p in batch:
+                    if exported >= limit:
+                        break
+                    if fmt == "csv":
+                        yield f"{p.ip},{p.port},{p.protocol},{p.score},{self._fmt_time(p.last_check)}\n"
+                    elif fmt == "txt":
+                        yield f"{p.ip}:{p.port}\n"
+                    elif fmt == "json":
+                        item = {
+                            "ip": p.ip,
+                            "port": p.port,
+                            "protocol": p.protocol,
+                            "score": p.score,
+                            "last_check": self._fmt_time(p.last_check),
+                        }
+                        prefix = "" if first else ","
+                        yield prefix + json.dumps(item, ensure_ascii=False)
+                        first = False
+                    exported += 1
+                if exported >= limit:
+                    break
+
+        if fmt == "json":
+            yield "]"
 
     @staticmethod
     def _fmt_time(dt: Optional[datetime]) -> str:
diff --git a/app/services/scheduler_service.py b/app/services/scheduler_service.py
index 1a70516..3996319 100644
--- a/app/services/scheduler_service.py
+++ b/app/services/scheduler_service.py
@@ -8,6 +8,7 @@ from app.core.tasks.queue import ValidationQueue
 from app.core.config import settings as app_settings
 from app.core.log import logger
 from app.models.domain import ProxyRaw
+from app.services.task_service import task_service
 
 
 class SchedulerService:
@@ -58,16 +59,15 @@ class SchedulerService:
         """立即执行一次全量验证（后台运行，不阻塞）"""
         if self._validate_task and not self._validate_task.done():
             return
-        self._validate_task = asyncio.create_task(self._do_validate_all())
+        self._validate_task = asyncio.create_task(self._do_validate_all(from_loop=False))
 
     async def _run_loop(self):
         """定时循环"""
         while self.running:
             try:
                 # 清理过期任务，防止内存无限增长
-                from app.services.task_service import task_service
                 task_service.cleanup_old_tasks()
-                await self._do_validate_all()
+                await self._do_validate_all(from_loop=True)
             except Exception as e:
                 logger.error(f"Scheduler loop error: {e}", exc_info=True)
             # 等待下一次
@@ -76,10 +76,17 @@ class SchedulerService:
             except asyncio.TimeoutError:
                 pass
 
-    async def _do_validate_all(self):
+    async def _do_validate_all(self, from_loop: bool = True):
         """验证数据库中所有存量代理"""
+        queue_started_here = False
         try:
             logger.info("Starting scheduled validation for all proxies")
+
+            # 如果队列未运行，临时启动它（适用于 validate_all_now 在调度器停止时调用）
+            if not self.validation_queue._running:
+                await self.validation_queue.start()
+                queue_started_here = True
+
             async with get_db() as db:
                 # 清理 7 天前的验证任务记录，防止表无限增长
                 cleaned = await ValidationTaskRepository.cleanup_old(db, days=7)
@@ -95,7 +102,7 @@ class SchedulerService:
             batch_size = 100
             total_batches = (len(proxies) - 1) // batch_size + 1
             for i in range(0, len(proxies), batch_size):
-                if not self.running:
+                if from_loop and not self.running:
                     break
                 batch = proxies[i : i + batch_size]
                 await self.validation_queue.submit([
@@ -106,3 +113,6 @@ class SchedulerService:
             logger.info("Scheduled validation batches submitted")
         except Exception as e:
             logger.error(f"Scheduled validation error: {e}", exc_info=True)
+        finally:
+            if queue_started_here:
+                await self.validation_queue.stop()
diff --git a/app/services/validator_service.py b/app/services/validator_service.py
index 3383a9e..4b3cec2 100644
--- a/app/services/validator_service.py
+++ b/app/services/validator_service.py
@@ -95,17 +95,13 @@ class ValidatorService:
         timeout = aiohttp.ClientTimeout(total=self.timeout, connect=self.connect_timeout)
         test_url = self._get_test_url("http")
 
-        try:
-            async with aiohttp.ClientSession(connector=connector, timeout=timeout) as session:
-                async with session.get(test_url, allow_redirects=True) as response:
-                    if response.status in (200, 301, 302):
-                        latency = round((time.time() - start) * 1000, 2)
-                        logger.info(f"SOCKS valid: {ip}:{port} ({protocol}) {latency}ms")
-                        return True, latency
-                    return False, 0.0
-        finally:
-            # ClientSession 的 async with 退出时会自动关闭 connector，无需手动重复关闭
-            pass
+        async with aiohttp.ClientSession(connector=connector, timeout=timeout) as session:
+            async with session.get(test_url, allow_redirects=True) as response:
+                if response.status in (200, 301, 302):
+                    latency = round((time.time() - start) * 1000, 2)
+                    logger.info(f"SOCKS valid: {ip}:{port} ({protocol}) {latency}ms")
+                    return True, latency
+                return False, 0.0
 
     async def close(self):
         """关闭共享的 HTTP ClientSession"""
diff --git a/pytest.ini b/pytest.ini
index 98047b6..f3e68c3 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -14,4 +14,4 @@ markers =
     e2e: 端到端测试
     slow: 慢速测试
     async_test: 异步测试
-asyncio_mode = auto
+asyncio_default_fixture_loop_scope = function
diff --git a/requirements.txt b/requirements.txt
index a96639b..526a10c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,3 +6,4 @@ aiohttp-socks==0.9.1
 beautifulsoup4==4.12.3
 lxml==5.1.0
 pydantic-settings==2.8.1
+httpx==0.27.0
diff --git a/tests/unit/test_repositories.py b/tests/unit/test_repositories.py
index dc99a67..b7b3a7f 100644
--- a/tests/unit/test_repositories.py
+++ b/tests/unit/test_repositories.py
@@ -68,6 +68,37 @@ class TestProxyRepository:
         # 清理
         await proxy_repo.delete(db, "192.168.1.1", 8080)
 
+    @pytest.mark.asyncio
+    async def test_update_score_deletes_on_zero_or_below(self, db, proxy_repo):
+        """测试分数降至 0 及以下时自动删除代理"""
+        await proxy_repo.insert_or_update(db, "192.168.1.1", 8080, "http", 5)
+        
+        result = await proxy_repo.update_score(db, "192.168.1.1", 8080, -10)
+        assert result is True
+        
+        proxy = await proxy_repo.get_by_ip_port(db, "192.168.1.1", 8080)
+        assert proxy is None
+
+    @pytest.mark.asyncio
+    async def test_iter_batches(self, db, proxy_repo):
+        """测试流式分批读取"""
+        # 插入 5 条测试数据
+        for i in range(5):
+            await proxy_repo.insert_or_update(db, f"192.168.1.{i}", 8000 + i, "http", 10)
+        
+        batches = []
+        async for batch in proxy_repo.iter_batches(db, batch_size=2):
+            batches.append(batch)
+        
+        assert len(batches) == 3
+        assert len(batches[0]) == 2
+        assert len(batches[1]) == 2
+        assert len(batches[2]) == 1
+        
+        # 清理
+        for i in range(5):
+            await proxy_repo.delete(db, f"192.168.1.{i}", 8000 + i)
+
     @pytest.mark.asyncio
     async def test_batch_delete(self, db, proxy_repo):
         """测试批量删除"""