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Posted 2020-10-21 前路亦是故乡

开启服务器配置：

　　index.ts

import * as url from \'url\'
import * as express from \'express\'
import wechat from \'./wechat\'

let app = express()

app.get(\'/\',function(req,res){
  console.log(req.url)
  wechat(req,res)
})
app.listen(80)

　　wechat.ts

import * as url from \'url\'
import * as http from \'http\'
import * as crypto from \'crypto\'

function wechat(req:Request,res:Response){  
  var query = url.parse(req.url,true).query;  
  var signature = query.signature;  
  var timestamp = query.timestamp;  
  var nonce = query.nonce;  
  var echostr = query.echostr;  
　　//"weixin"需要跟配置时保持一致
  if(check(timestamp,nonce,signature,"weixin")){  
      res.end(echostr);  
  }else{  
      res.end("It is not from weixin");  
  }  
};  

function check(timestamp:number,nonce:any,signature:any,token:any){  
  var currSign,tmp;  
  tmp = [token,timestamp,nonce].sort().join("");  
  currSign = crypto.createHash("sha1").update(tmp).digest("hex");  
  return (currSign === signature);    
};
export default wechat

转载自~~~我找不到地址了，反正这一段是抄的