Question

我已经下载了Express包和nodemon，我创建了一个服务器并渲染了我的所有ejs文件。运行“ nodemon app”命令时出现此错误，具体是什么问题？：

PS C:\Users\user\Desktop\my port> nodemon app
[nodemon] 2.0.4
[nodemon] to restart at any time, enter `rs`
[nodemon] watching path(s): *.*
[nodemon] watching extensions: js,mjs,json
[nodemon] starting `node app.js`
events.js:291
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE: address already in use :::3000
    at Server.setupListenHandle [as _listen2] (net.js:1316:16)
    at listenInCluster (net.js:1364:12)
    at Server.listen (net.js:1450:7)
    at Function.listen (C:\Users\user\Desktop\my port\node_modules\express\lib\application.js:618:24)
    at Object.<anonymous> (C:\Users\user\Desktop\my port\app.js:16:5)
    at Module._compile (internal/modules/cjs/loader.js:1251:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1272:10)
    at Module.load (internal/modules/cjs/loader.js:1100:32)
    at Function.Module._load (internal/modules/cjs/loader.js:962:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
Emitted 'error' event on Server instance at:
    at emitErrorNT (net.js:1343:8)
    at processTicksAndRejections (internal/process/task_queues.js:80:21) {
  code: 'EADDRINUSE',
  errno: -4091,
  syscall: 'listen',
  address: '::',
  port: 3000
}
[nodemon] app crashed - waiting for file changes before starting...

Answer 1

您的系统已经在3000端口上运行了某些东西。

您可以做2个，

杀死进程运行于3000
或者在当前应用中使用其他端口（例如3001、5000等）

运行“ nodemon应用程序” comannd时出错

1 个答案: