Methods and steps to use http-proxy-middleware to implement proxy cross-domain in Node

1. Install the proxy module
2. Configure the proxy

1. Install the proxy module

cnpm i http-proxy-middleware -S

2. Configure the proxy

const express = require('express');
const app = express();

/* Proxy configuration start */
const proxy = require('http-proxy-middleware'); //Introduce proxy module const proxyOptions = {
    target: 'http://127.0.0.1:9999', //backend server address changeOrigin: true //process cross-domain};
const exampleProxy = proxy('/api/*', proxyOptions); //Requests with the api prefix all go through the proxy app.use(exampleProxy);
/* Proxy configuration end */

const hostName = '127.0.0.1';
const port = 8080;

app.get('/', function(req, res) {

    
    const html =
    `<!DOCTYPE html>
 <html lang="en">
     <head>
         <meta charset="UTF-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <meta http-equiv="X-UA-Compatible" content="ie=edge" />
         <title>Document</title>
     </head>
     <body>
         <button id="btn1">Request server interface 1</button>
         <button id="btn2">Request server interface 2</button>
         <script src="https://cdn.bootcss.com/axios/0.19.0/axios.min.js"></script>
         <script>
             document.getElementById('btn1').addEventListener(
                 'click',
                 () => {
                     axios.get('/api/hello', {
                         params: {
                             key: 'hello'
                         }
                     });
                 },
                 false
             );
 
             document.getElementById('btn2').addEventListener(
                 'click',
                 () => {
                     axios.get('/api/word', {
                         params: {
                             key: 'word'
                         }
                     });
                 },
                 false
             );
         </script>
     </body>
 </html>`;

    res.setHeader('Content-Type', 'text/html');
    res.send(html);
});


app.listen(port, hostName, function() {

    console.log(`The server is running at http://${hostName}:${port}`);

});

This is the end of this article about the steps to use http-proxy-middleware in Node to implement proxy cross-domain. For more relevant Node http-proxy-middleware proxy cross-domain content, please search 123WORDPRESS.COM's previous articles or continue to browse the following related articles. I hope everyone will support 123WORDPRESS.COM in the future!

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