初始化SSE服务端项目

app.js

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+/**
+ * @file SSE服务器主入口文件
+ * @author Yk <yk_9001@icloud.com>
+ * @createdAt 2025-07-01
+ * @version 1.0.0
+ * @description Express服务器配置和路由初始化
+ */
+
+const express = require('express');
+const bodyParser = require('body-parser');
+const security = require('./middlewares/security');
+const streamRouter = require('./routes/stream');
+const pushRouter = require('./routes/push');
+const {sendHeartbeat} = require('./lib/sse');
+const config = require('./config');
+
+const app = express();
+
+// 中间件
+app.use(bodyParser.json());
+app.use(...security);
+
+// 路由
+app.use('/stream', streamRouter);
+app.use('/push', pushRouter);
+
+// 心跳
+setInterval(sendHeartbeat, config.sse.heartbeatInterval);
+
+// 错误处理
+const errorHandler = (err, req, res, next) => {
+    console.error(err.stack);
+    res.status(500).json({
+        code: 500,
+        error: 'Internal Server Error',
+        timestamp: new Date().toISOString()
+    });
+};
+app.use(errorHandler);
+
+app.listen(config.server.port, () => {
+    console.log(`SSE server running on port ${config.server.port}`);
+});