node使用http-proxy-middleware做代理，解决跨域问题

const express = require('express')
const history = require('connect-history-api-fallback')
const { createProxyMiddleware } = require('http-proxy-middleware')
 
let app = express()
 
app.use(history())
 
// //匹配api开头的请求，实际转发的请求保api这三个字母
// app.use(
//   '/api',
//   createProxyMiddleware({
//     target: 'http://localhost:85',
//     changeOrigin: true,
//   })
// )
 
app.use(
  '/master',
  createProxyMiddleware({
    target: 'http://xxx:8080',
    secure: false,
    changeOrigin: true,
    pathRewrite: function (path, req) {
      // 可以在这里重写路径
      return `/master${path}`
    },
    on: {
      proxyReq: (proxyReq, req, res) => {
        //console.log(proxyReq)
        /* handle proxyReq */
      },
      proxyRes: (proxyRes, req, res) => {
        //console.log(proxyRes)
        /* handle proxyRes */
      },
      error: (err, req, res) => {
        console.log(err)
        /* handle error */
      },
    },
  })
)
 
app.use(express.static('./dist'))
 
app.listen(99, () => {
  console.log('http://localhost:99')
  console.log('success')
})

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