详解用node.js实现简单的反向代理

之前用node.js实现简单的反向代理，最近需要回顾，就顺便发到随笔上了不多说直接上代码

之前用node.js实现简单的反向代理，最近需要回顾，就顺便发到随笔上了

不多说直接上代码！

const http = require('http');
const url = require('url');
const querystring = require('querystring');


http.createServer(function(oreq, ores) {
 console.log("服务已开启");
 if (oreq) {
 if (oreq.url !== '/favicon.ico') {
 let content = '',
 postData = '';
 // 封装获取参数的方法
 function getParmas(oUrl) {
 let oQuery = (typeof oUrl === "object") ? oUrl : url.parse(oUrl, true).query,
 data = {};
 for (item in oQuery) {
 if (item !== 'hostname') {
 if (item !== 'path') {
 data[item] = oQuery[item];
 }
 }
 }
 return querystring.stringify(data);
 };
 // 封装发起http请求的方法
 function httpRequest(options, ores) {
 let datas = "";
 return http.request(options, function(res) {
 res.setEncoding('utf8');
 res.on('data', function(chunk) {
 // 返回数据
 datas += chunk;
 });
 res.on('end', function() {
 ores.writeHead(200, {
 "Content-Type": "application/json; charset = UTF-8",
 "Access-Control-Allow-Origin": "*"
 });
 ores.end(datas);
 })
 })
 };
 // 数据块接收中
 console.log(oreq.method.toUpperCase());
 if (oreq.method.toUpperCase() === "POST") {
 console.log("进入POST");
 oreq.on("data", function(postDataChunk) {
 postData += postDataChunk;
 });
 // 数据接收完毕，执行回调函数
 oreq.on("end", function() {
 console.log("接收完毕")
 console.log(postData);
 // 配置options
 let oData = JSON.parse(postData);

 postData = getParmas(oData);

 let options = {
 hostname: oData.hostname,
 port: '80',
 path: oData.path,
 method: "POST"
 };
 // 发送请求
 let req = httpRequest(options, ores);
 req.on('error', function(e) {
 console.log('problem with request: ' + e.message);
 });
 req.write(postData); //发送请求数据
 req.end();
 });

 } else {
 let queryObj = url.parse(oreq.url, true).query;
 content = getParmas(oreq.url);
 let options = {
 hostname: queryObj.hostname,
 port: '80',
 path: queryObj.path + content,
 method: "GET"
 };
 // 发送请求
 let req = httpRequest(options, ores);
 req.on('error', function(e) {
 console.log('problem with request: ' + e.message);
 });
 req.end();
 }
 }
 }
}).listen(8080, '127.0.0.1');

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。