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  • 关于“Error: listen EADDRINUSE: address already in use 127.0.0.1:3000”

    今天在做一个Vue小项目的时候,遇到了这样一个bug,终端输入npm run dev指令,本来按照我在package.json文件中配置的命令:"dev": "webpack-dev-server --open --port 3000 --hot",应该会运行webpack工具打包代码后,自动打开浏览器,监听3000端口,但是此时却在终端命令行提示出错,错误信息如下:

    PS C:UsersLXDDesktopmy-vuevue-cms> npm run dev

    01.webpack-study@1.0.0 dev C:UsersLXDDesktopmy-vuevue-cms

    webpack-dev-server --open --port 3000 --hot

    events.js:174
          throw er; // Unhandled 'error' event
          ^

    Error: listen EADDRINUSE: address already in use 127.0.0.1:3000
        at Server.setupListenHandle [as listen2] (net.js:1253:19)
        at listenInCluster (net.js:1318:12)
        at GetAddrInfoReqWrap.doListen [as callback] (net.js:1451:7)
        at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:61:10)
    Emitted 'error' event at:
        at emitErrorNT (net.js:1297:8)
        at process.
    tickCallback (internal/process/next_tick.js:63:19)
    npm ERR! code ELIFECYCLE
    npm ERR! errno 1
    npm ERR! 01.webpack-study@1.0.0 dev: webpack-dev-server --open --port 3000 --hot
    npm ERR! Exit status 1
    npm ERR!
    npm ERR! Failed at the 01.webpack-study@1.0.0 dev script.
    npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

    npm ERR! A complete log of this run can be found in:
    npm ERR!     C:UsersLXDAppDataRoaming pm-cache_logs2019-05-23T14_10_58_853Z-debug.log
    PS C:UsersLXDDesktopmy-vuevue-cms>

    根据错误提示,Error: listen EADDRINUSE: address already in use 127.0.0.1:3000,意思是3000端口已经被占用。这时,我寻找的解决方案为:

    1. 打开cmd

    2. 运行netstat -ano,找到报错信息提示的端口号那一行,记住最后那个数字

      3.接下来运行tskill “最后那个数字”,所以这里我运行的是tskill 8408

    最后打开VSCode,在终端再次输入npm run dev,运行成功,问题解决。

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  • 原文地址:https://www.cnblogs.com/smalldy/p/10915046.html
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