Nodejs：路由2

optfile.js

//-------------optfile.js-------------------------
var fs = require('fs');
module.exports = {
	readfileSync: function(path) { //同步读取
		var data = fs.readFileSync(path, 'utf-8');
		console.log(data);
		console.log("同步方法执行完毕");
		return data;
	},
	readfile: function(path, recall) { //异步执行
		fs.readFile(path, function(err, data) {
			if(err) {
				console.log("异步执行error：" + err);
				recall("文件不存在，异步执行error：" + err);
			} else {
				//console.log(data.toString());
				recall(data);
			}
		});
		console.log("===异步方法执行完毕===");
	},
}

router.js

var optfile = require('../model/optfile2.js');
module.exports = {
	login: function (req, res) {
		function recall(data) {//闭包函数、回调函数
			//console.log(data.toString());
			res.write(data);
			res.end(""); //不写则没有htpp协议尾
		}
		optfile.readfile('./view/signin.html', recall);
	},
	zhuce: function (req, res) {
		function recall(data) {//闭包函数、回调函数
			console.log(data.toString());
			res.write(data);
			res.end(""); //不写则没有htpp协议尾
		}
		optfile.readfile('./view/zhuce.html', recall);
	}
}

/*
 * 单线程异步
 */
var http = require('http');
var url = require('url');

var router = require('./model/router');

http.createServer(function (request, response) {
	response.writeHead(200, {
		'Content-Type': 'text/html;  charset=utf-8'
	});
	if (request.url !== "/favicon.ico") { //清除第2此访问
		var pathname = url.parse(request.url).pathname;
		console.log(pathname);
		pathname = pathname.replace(/\//, ''); //替换掉前面的/
		if (pathname) {
			console.log(pathname);
			router[pathname](request, response);
		}
		//response.end('');
		console.log("===主程序执行完毕===！");
	}
}).listen(8000);
console.log('Server  running  at  http://127.0.0.1:8000/');