// 引入 dotenv 并加载 .env 文件 require('dotenv').config(); const express = require("express"); const roleRoutes = require("./src/routes/role.routes"); const app = express(); const port = process.env.SERVER_PORT || 3000; // 使用环境变量中的端口号 // 注册路由 app.use("/api", roleRoutes); app.listen(port, () => { console.log(`Server is running on http://localhost:${port}`); });