反应-本机-npm-开始不工作给错误与地铁- events.js:183抛出器

Question

我试图从Linux服务器在Android上运行一个本机应用程序，现在我在尝试用npm-start'启动npm服务器时遇到了这个错误。

> test0app@0.0.1 start /home/lenovot430/Documents/ReactProjects/test0app
> node node_modules/react-native/local-cli/cli.js start

┌──────────────────────────────────────────────────────────────────────────────┐
│                                                                              │
│  Running Metro Bundler on port 8081.                                         │
│                                                                              │
│  Keep Metro running while developing on any JS projects. Feel free to        │
│  close this tab and run your own Metro instance if you prefer.               │
│                                                                              │
│  https://github.com/facebook/react-native                                    │
│                                                                              │
└──────────────────────────────────────────────────────────────────────────────┘

events.js:183
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE :::8081
    at Server.setupListenHandle [as _listen2] (net.js:1360:14)
    at listenInCluster (net.js:1401:12)
    at Server.listen (net.js:1485:7)
    at Promise (/home/lenovot430/Documents/ReactProjects/test0app/node_modules/metro/src/index.js:253:20)
    at new Promise (<anonymous>)
    at Object.<anonymous> (/home/lenovot430/Documents/ReactProjects/test0app/node_modules/metro/src/index.js:252:14)
    at Generator.next (<anonymous>)
    at asyncGeneratorStep (/home/lenovot430/Documents/ReactProjects/test0app/node_modules/metro/src/index.js:46:24)
    at _next (/home/lenovot430/Documents/ReactProjects/test0app/node_modules/metro/src/index.js:66:9)
    at <anonymous>
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! test0app@0.0.1 start: `node node_modules/react-native/local-cli/cli.js start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the test0app@0.0.1 start 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!     /home/lenovot430/.npm/_logs/2019-04-29T09_09_45_424Z-debug.log

如果我尝试‘react原生运行-android’，应用程序就会卡在加载屏幕上。

我试图修复它的方法

1. 删除节点模块，清理缓存并重新安装。 rm -rf node_modules && npm cache clean --force && npm install
2. 卸载和重新安装的守望者 brew uninstall watchman brew link pcre brew install --HEAD watchman brew install watchman
3. 克隆看门人回购并试用4.9.0版 $ git clone https://github.com/facebook/watchman.git $ cd watchman $ git checkout v4.9.0 # the latest stable release $ ./autogen.sh $ ./configure $ make $ sudo make install

我没有在react本机应用程序中进行任何配置更改。我试着用react-native init做一个新项目，但在这个项目中，我也遇到了同样的错误。

我的package.json文件

{
  "name": "test0app",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "react": "16.8.3",
    "react-native": "0.59.5"
  },
  "devDependencies": {
    "@babel/core": "^7.4.4",
    "@babel/runtime": "^7.4.4",
    "babel-jest": "^24.7.1",
    "jest": "^24.7.1",
    "metro-react-native-babel-preset": "^0.53.1",
    "react-test-renderer": "16.8.3"
  },
  "jest": {
    "preset": "react-native"
  }
}

Answer 1

您有错误，Error: listen EADDRINUSE :::8081，意思是“使用中的地址”。

有时，使用绑定器启动的web服务器无法正确地关闭，从而使端口8081保持锁定。您可以使用以下方法找到流氓进程：

lsof -wni tcp:8081

然后通过PID杀死它

kill -9 <PID>

我必须这么做，两周左右。