64 lines
1.5 KiB
JavaScript
64 lines
1.5 KiB
JavaScript
const express = require('express');
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const cors = require('cors');
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const helmet = require('helmet');
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const rateLimit = require('express-rate-limit');
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require('dotenv').config();
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const apiRoutes = require('./routes/api');
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const app = express();
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const PORT = process.env.PORT || 3001;
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// 安全中间件
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app.use(helmet());
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// 跨域配置
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app.use(cors({
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origin: process.env.FRONTEND_URL || 'http://localhost:5173',
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credentials: true
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}));
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// 请求限制
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const limiter = rateLimit({
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windowMs: 15 * 60 * 1000, // 15分钟
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max: 100, // 限制每个IP 15分钟内最多100个请求
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message: '请求过于频繁，请稍后再试'
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});
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app.use('/api/', limiter);
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// 解析JSON请求体
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app.use(express.json({ limit: '10mb' }));
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app.use(express.urlencoded({ extended: true }));
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// API路由
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app.use('/api', apiRoutes);
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// 健康检查端点
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app.get('/health', (req, res) => {
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res.json({ status: 'OK', timestamp: new Date().toISOString() });
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});
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// 错误处理中间件
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app.use((err, req, res, next) => {
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console.error('服务器错误:', err);
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res.status(500).json({
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success: false,
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message: '服务器内部错误',
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error: process.env.NODE_ENV === 'development' ? err.message : '服务器错误'
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});
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});
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// 404处理
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app.use('*', (req, res) => {
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res.status(404).json({
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success: false,
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message: '接口不存在'
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});
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});
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app.listen(PORT, () => {
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console.log(`后端服务已启动，端口: ${PORT}`);
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console.log(`健康检查: http://localhost:${PORT}/health`);
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});
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module.exports = app; |