启动RN服务端口被占用

zh_xuan2026-04-18 23:39

npx react-native start --port 8081 --host 127.0.0.1启动RN的Metro服务，报错：

bash 复制代码

D:\projects\odn\RN\LightODN>npx react-native start --port 8081 --host 127.0.0.1
warn Package react-native-sqlite-storage contains invalid configuration: "dependency.platforms.ios.project" is not allowed. Please verify it's properly linked using "react-native config" command and contact the package maintainers about this.
warn Package react-native-amap3d contains invalid configuration: "dependency.platforms.ios.project" is not allowed. Please verify it's properly linked using "react-native config" command and contact the package maintainers about this.
error listen EADDRINUSE: address already in use 127.0.0.1:8081.
Error: listen EADDRINUSE: address already in use 127.0.0.1:8081
    at Server.setupListenHandle [as _listen2] (net.js:1331:16)
    at listenInCluster (net.js:1379:12)
    at doListen (net.js:1516:7)
    at processTicksAndRejections (internal/process/task_queues.js:83:21)
info Run CLI with --verbose flag for more details.

8081端口被占，查找进程id

bash 复制代码

D:\projects\odn\RN\LightODN>netstat -aon | findstr :8081
  TCP    127.0.0.1:8081         0.0.0.0:0              LISTENING       18312
  TCP    127.0.0.1:8081         127.0.0.1:60981        ESTABLISHED     18312
  TCP    127.0.0.1:8081         127.0.0.1:60982        ESTABLISHED     18312
  TCP    127.0.0.1:60981        127.0.0.1:8081         ESTABLISHED     5348
  TCP    127.0.0.1:60982        127.0.0.1:8081         ESTABLISHED     5348

执行 taskkill /PID 18312 /F

bash 复制代码

taskkill /PID 18312 /F

然后再执行启动RN的Metro服务命令就可以了，ok.