GET请求：
var http = require('http');
var qs = require('querystring');
var data = {
a: 123,
time: new Date().getTime()};//这是需要提交的数据
var content = qs.stringify(data);
var options = {
hostname: '127.0.0.1',
port: 10086,
path: '/pay/pay_callback?' + content,
method: 'GET'
};
var req = http.r
