使用nodejs实现本地开发跨域中间件服务

仓库案例

nodejs-proxy

创建项目目录

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mkdir -p myproject

安装模块

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npm install --save-dev http-proxy-middleware
npm install --save express

实现代码

server.js

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const express = require('express');
const app = express();
var proxy = require('http-proxy-middleware');

var onProxyReq = function(proxyReq, req, res) {
  // add new header to request
  // proxyReq.setHeader('x-added', 'foobar')
}

var onError = function(err, req, res) {
  console.log('Something went wrong.')
  console.log('And we are reporting a custom error message.')
}

// proxy middleware options
var options = {
    target: 'https://api.server.domain',
    rejectUnauthorized:false,
    changeOrigin: true,
    onProxyReq: onProxyReq, 
    onError: onError,
    logLevel: "debug"
};

// create the proxy (without context)
var exampleProxy = proxy('/api/**',options);
app.use(exampleProxy);

// create the listening
app.listen('3000', function() {
    console.log('[DEMO] Server: listening on port 3000')
});

解释:
从前端访问localhost:3000,地址以/api/开始的所有请求转发到https://api.server.domain后端服务
例如:
localhost:3000/api/common/info  =>   https://api.server.domain/api/common/info

运行服务

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node server.js