每次更新 js 文件时，nodemon 包都会引发错误行为：“[nodemon] 应用程序崩溃 - 在启动之前等待文件更改”

编程问答 2022-04-29

问题描述

我正在尝试构建一个 nodeapi，为此我使用了一堆库，如 express、morgan、nodemon。
一切都正确安装，安装没有错误 当我尝试通过在 package.json 文件中更新来使用 nodemon 时，它会工作一次，然后拍摄 [正在显示？报告？一个] 意外错误

这里是终端上的错误

> node@1.0.0 start /root/Downloads/node
> nodemon server.js

[nodemon] 2.0.7
[nodemon] to restart at any time,enter `rs`
[nodemon] watching path(s): *.*
[nodemon] watching extensions: js,mjs,json
[nodemon] starting `node server.js`
Server Has Been Started
localhost:3000
events.js:353
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE: address already in use :::3000
    at Server.setupListenHandle [as _listen2] (net.js:1318:16)
    at listenInCluster (net.js:1366:12)
    at Server.listen (net.js:1452:7)
    at Object.<anonymous> (/root/Downloads/node/server.js:8:8)
    at Module._compile (internal/modules/cjs/loader.js:1068:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)
    at Module.load (internal/modules/cjs/loader.js:933:32)
    at Function.Module._load (internal/modules/cjs/loader.js:774:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47
Emitted 'error' event on Server instance at:
    at emitErrorNT (net.js:1345:8)
    at processticksAndRejections (internal/process/task_queues.js:82:21) {
  code: 'EADDRINUSE',errno: -98,syscall: 'listen',address: '::',port: 3000
}
[nodemon] app crashed - waiting for file changes before starting...

这是我的 app.js 的样子

const express = require('express');
const app = express();
const morgan =require('morgan')

const employeeRoutes =require('./api/routes/employee');
const departmentRoutes =require('./api/routes/department');

app.use(morgan('dev'));

// Routes for api 
app.use('/employee',employeeRoutes);
app.use('/department',departmentRoutes);

module.exports = app;

这是我的 server.js

const http=require('http');
const app =require('./app');

const port =process.env.PORT || 3000;

const server = http.createServer(app);

server.listen(port);

console.log('Server Has Been Started');
console.log('localhost:'+port);

我正在使用邮递员访问所有请求和响应。

我确实尝试使用 npm cache clean --force 但它不再起作用了。

解决方法

之前经历过类似的事情，只需尝试重新启动系统即可解决问题

javascriptmernnodemon