url模块可以解析路径的内容
var http = require('http');
var url = require('url')
var server = http.createServer(function (req,res) {
var path = url.parse(req.url).pathName;
console.log("请求路径"+url.parse(req.url))
res.end('success');
})
server.listen(3000,"127.0.0.1")