如题所述, 这破问题卡了我好几天了已经, 求大神KO
如果是在本地测 就会报错这个:Cannot GET /sns/jscode2session 如果我发布到服务器 就报错 : Segmentation fault 我贴本地代码:

main.js

var express = require('express');
var app = express();
var fs = require("fs");
var http = require('http');
var querystring = require('querystring'); 

var test = require('./testrequest');
var testfirst = app.get('/test/test',function(req,res){
	var tt = test.test(req,function(reschild,data){
		res.write(data);
		res.write('\n\r');
		res.end('test parent is show');
	});
});
var server = app.listen(8081, function () {

  var host = server.address().address
  var port = server.address().port

  console.log("应用实例，访问地址为 http://%s:%s", host, port)

});

testrequest.js

var querystring = require('querystring'); 
var http = require('http');


exports.test = function(parRes,data){
	
	var appid = 'wx2c0f777c4625ed86';
	var secret = '5a47d4297972d7f4c84145e2ba92669f';
	var code = parRes.query.code;
	var newdata = {
		appid:appid,
		secret:secret,
		code:code,
		grant_type:'authorization_code'
	}
	var content = querystring.stringify(newdata);
	var path = 'https://api.weixin.qq.com/sns/jscode2session?'+content;
	console.log('path is :'+path	);
	
	const options = {
	  hostname: '127.0.0.1',
	  port: 8081,
	  path: path,       //'/testget?'+content,
	  method: 'get',
	  headers: {
	    'Content-Type': 'application/x-www-form-urlencoded',
	    'Content-Length': Buffer.byteLength(content)
	  }
	};
	
	var req = http.request(options,(res) => {
		  console.log(`STATUS: ${res.statusCode}`);
		  console.log(`HEADERS: ${JSON.stringify(res.headers)}`);
		  res.setEncoding('utf8');
		  res.on('data', (chunk) => {
		    console.log(`BODY: ${chunk}`);
		    data('BODY',chunk);
		  });
		  res.on('end', (chunk) => {
		    console.log('No more data in response.');
		    
		  });
	});
	req.on('error', (e) => {
		data('error',e.message);
	  console.error(`problem with request: ${e.message}`);
	});
	
	// write data to request body
	req.write(content);
	req.end();
}

求大牛 指点