简单的html js node 前端直接使用反向代理软件

先放上已经打包好的地址

https://gitee.com/Amengxiaoya/node-proxy.git  切记 proxyConfig.json 设置代理 ip为自己的ipv4地址 （cmd+ipconfig）

再放上源码地址

https://gitee.com/Amengxiaoya/node-re-quest.git  有点小乱，我测试用的（该项目只用到一个proxy.js文件）。

下载后第一步 `cnpm install` 然后node的pkg库的打包命令 `pkg -t node14-win proxy.js`

主要的proxy.js文件源码

//代理
const querystring = require('querystring');
const util = require('util');
const http = require('http');
const request = require('request');
const formidable = require("formidable");
const path = require("path");
const fs = require("fs");
const FormData = require('form-data')

const {
	hostIp,
	apiPort,
	redirUrl,
	customQuery,
	consoleConfig:{apiSuc,apiFail,apiMsg,removeFile,removeMsg}
} = JSON.parse(fs.readFileSync(process.cwd()+'/proxyConfig.json','utf-8'));

function saveFiles(req,options,callback){
	const promiseCase=[];
	var form = new formidable.IncomingForm();
	form.keepExtensions = true;
	form.multiples = true;
	form.uploadDir = path.join(process.cwd());
	form.parse(req, function(err, fields, files) {
		//const formData = new FormData()
		options.formData = {};
		for (let key in fields) {
			//formData.append(key, fields[key])
			options.formData[key]=fields[key]
		}
		for (let key in files) {
			let newFilepath='Tmp-'+files[key].originalFilename;
			fs.renameSync(files[key].newFilename,newFilepath)
			//formData.append(key, fs.createReadStream('./'+newFilepath))
			options.formData[key]=fs.createReadStream('./'+newFilepath,{highWaterMark:9999999})
			new Promise((rev)=>{
				promiseCase.push(rev)
			}).then(()=>{
				fs.unlink('./'+newFilepath,function(err){
					if(removeFile==="0"){
						console.log(err?'清理临时文件异常':'删除临时图片成功');
					}
					if(removeMsg==="0"&&err){
						console.log(err);
					}
				})
			})
		}
		request(options, function(error, response, body){
			callback(error, response, body)
			for (let item of promiseCase) {
				item()
			}
			promiseCase.splice(0,)
		})
		//pipe(fs.createWriteStream(files.file.originalFilename))//formData.pipe()
	})
}

//创建代理服务
const httpServer = http.createServer((req, res) => {
	res.setHeader('Access-Control-Allow-Origin', '*');
	res.setHeader('Access-Control-Allow-Credentials', true);
	res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
	res.setHeader('Access-Control-Allow-Headers', '*');
	if (req.method == 'OPTIONS') {
		// 回复OPTIONS
		res.end('');
		return
	}
	/* 正式代理 */
	let options = {
		method: req.method,
		header:req.headers,
		encoding:null
	};
	if(customQuery!=='-1'){
		options.headers={};
		for (let key in customQuery) {
			options.headers[key]=req.headers[customQuery[key]]
		}
	}
	options.url = redirUrl + req.url
	function callback(error, response, body) {
		res.setHeader('Content-Type', response.headers['content-type']);
		res.statusCode = response.statusCode
		if (!error) { //删除 && response.statusCode === 200
			if(apiSuc==="0"){
				console.log(req.url + '成功代理')
			}
			res.end(body);
		} else {
			if(apiFail==="0"){
				console.log(req.url + '请求异常')
			}
			if(apiMsg==="0"){
				console.log(error)
			}
			res.end("{'code':-1,'msg':'node请求异常'}");
		}
	}
	if (options.method === 'GET') {
		request(options, callback);
	}else if (options.method === 'POST') {
		if(/^multipart\/form-data/.test(req.headers['content-type'])){
			saveFiles(req,options,callback)
		}else{
			// 定义了一个post变量，用于暂存请求体的信息
			var post = '';
			// 通过req的data事件监听函数，每当接受到请求体的数据，就累加到post变量中
			req.on('data', function(chunk) {
				post += chunk;
			});
			req.on('end', function() {
				options.body=post
				request(options, callback);
			});
		}
	}
}).listen(apiPort, hostIp, () => {
	console.log('开启代理---' + hostIp + ':' + apiPort + '---为---' + redirUrl,'by#2585266774@qq.com#')
});