text: var http = require("http");
  var url = require("url");
  var util = require("util");
  
  http.createServer(function (req, res) {
      res.writeHead(200, {"Content-Type": "text/plain; charset=utf-8"});
      res.end(util.inspect(url.parse(req.url, true)));
  }).listen(3000);
  
  //启动后，在浏览器访问如下地址测试  http://localhost:3000/user?name=菜鸟教程&url=www.runoob.com