几行代码搭建nodejs代理服务器，从而解决跨域问题~！

const express = require('express');
const path = require('path');
const request = require('request');
// 配置静态文件服务中间件
// server地址
const app = express();
let serverUrl='www.baidu.com';
app.use(express.static(path.join(__dirname, './../storeOS')));
app.use('/', function(req, res) {
let url = serverUrl + req.url;
req.pipe(request(url)).pipe(res);
});
app.listen(3000, function () {
console.log('server is running at port 3000');
});