n4_rout.js

var http = require('http');
var url = require('url');
var router = require('./modules/router');

http.createServer(function (request, response){
    response.writeHead(200, {'Content-Type': 'text/html; charset = utf-8'}); //http协议头
    if(request.url !== "/favicon.ico"){ //清除node的第二次访问，有些高级框架已清除
        var pathname = url.parse(request.url).pathname;
        console.log(pathname);
        pathname = pathname.replace(/\//, ''); //替换掉前面的'/'
        console.log(pathname);
        // 在router.js里面只写了login和register方法，没写异常处理，
        // 所以浏览器直接访问 http://127.0.0.1:8000/login 或者 http://127.0.0.1:8000/register 没有问题，
        // 访问其他路由后台崩溃。
        router[pathname](request, response);
        // router.login(request, response);
        // router.register(request, response);
        response.end(''); //协议尾，结束本次http协议
    }
}).listen(8000);
console.log('Sever running at  http://127.0.0.1:8000');