Vue前后端不同端口的实现方法

app.all('*', function (req, res, next) {
 res.header('Access-Control-Allow-Origin', req.headers.origin || '*');
 res.header('Access-Control-Allow-Headers', 'Content-Type,Content-Length, Authorization,\'Origin\',Accept,X-Requested-With');
 res.header('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
 res.header('Access-Control-Allow-Credentials', true);
 res.header('X-Powered-By', ' 3.2.1');
 res.header('Content-Type', 'application/json;charset=utf-8');
 if (req.method === 'OPTIONS') {
 res.sendStatus(200);
 } else {
 next();
 }
});

mounted(){
 axios.get(HOST)
 .then(response => {
 this.sed = response.data.data;
 })
 }

proxyTable: {
 '/seller': {
 target: 'http://localhost:8085',
 changeOrigin: true,
 pathRewrite: {
  '^/seller': '/seller'
 }
 }
 },