vue-socket.io跨域问题的解决方法

报错信息：

 Access to XMLHttpRequest at 'http://192.168.37.130:5050/socket.io/?EIO=3&transport=polling&t=N0oqNsW' from origin 'http://localhost:8080' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
 vue-socketio.js?70bb:8 GET http://192.168.37.130:5050/socket.io/?EIO=3&transport=polling&t=N0oqNsW net::ERR_FAILED

解决办法：

 //vue.config.js

 module.exports = {
   devServer: {
     proxy: {
         '/socket.io': {
           target: 'http://192.168.37.130:5050',
           ws: true,
           changeOrigin: true
         },
         'sockjs-node': {
           target: 'http://192.168.37.130:5050',
           ws: false,
           changeOrigin: true
         },
     }

   }
 }