运行H5项目时报错:
Error: listen EADDRINUSE: address already in use :::4000(你的端口)
此时必须kill掉被占用的端口,才能继续运行项目。
报错日志
C02Z84E5LVCF:mmdemo maomao$ npm run dev
> mmdemo@1.0.0 dev /Users/maomao/Documents/demo/pc/mmdemo
> webpack server --open
/Users/maomao/Documents/demo/pc/mmdemo/node_modules/webpack-dev-server/lib/Server.js:1584
throw error;
^
Error: listen EADDRINUSE: address already in use :::4000
at Server.setupListenHandle [as _listen2] (net.js:1298:14)
at listenInCluster (net.js:1346:12)
at Server.listen (net.js:1434:7)
at READ_WRITE (/Users/maomao/Documents/demo/pc/mmdemo/node_modules/webpack-dev-server/lib/Server.js:2134:19)
at new Promise (<anonymous>)
at Server.start (/Users/maomao/Documents/demo/pc/mmdemo/node_modules/webpack-dev-server/lib/Server.js:2133:11)
at async Command.<anonymous> (/Users/maomao/Documents/demo/pc/mmdemo/node_modules/@webpack-cli/serve/lib/index.js:244:25)
at async Promise.all (index 1)
at async Command.<anonymous> (/Users/maomao/Documents/demo/pc/mmdemo/node_modules/webpack-cli/lib/webpack-cli.js:1516:13) {
code: 'EADDRINUSE',
errno: 'EADDRINUSE',
syscall: 'listen',
address: '::',
port: 4000
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! mmdemo@1.0.0 dev: `webpack server --open`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the mmdemo@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! /Users/maomao/.npm/_logs/2021-12-23T06_19_39_606Z-debug.log
解决方案
1.查看端口所在进程
命令行输入:
lsof -i:4000
C02Z84E5LVCF:mmdemo maomao$ lsof -i:4000
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
Google 3802 maolijun298 226u IPv6 0xb77e5e4617176d37 0t0 TCP localhost:60403->localhost:terabase (ESTABLISHED)
node 9975 maolijun298 23u IPv6 0xb77e5e460470c1f7 0t0 TCP *:terabase (LISTEN)
node 9975 maolijun298 44u IPv6 0xb77e5e461717b6b7 0t0 TCP localhost:terabase->localhost:60403 (ESTABLISHED)
可以看到端口所在的进程是:9975
2.清除端口所在进程
命令行输入:
kill -9 9975
可以再次运行lsof -i:4000
检查进程是否存在,如果不存在,就可以重新运行项目了。
祝你成功!
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