node.js 模块和读取路由中获取信息

Posted 2020-10-17 款款就是我

模块很类似于Java中的类，也是可以继承的，有自己的变量和方法

nj_dome.js

var  http  =  require(‘http‘);  
var User = require("./model/User");//导入user的模块
var Teacher = require("./model/Teacher");//导入teacher的模块

http.createServer(function  (request,  response)  {  
	 response.writeHead(200,  {‘Content-Type‘:  ‘text/html;  charset=utf-8‘});  
 	  if(request.url!=="/favicon.ico"){ 
 	  /*user = new User(1,"张三",20);//创建一个user并调用方法
 	  user.enter();*/
 	  teacher = new Teacher(2,"李老师",30);//创建一个teacher
 	  teacher.enter();
 	  teacher.teach(response);

      response.end(‘ ‘);
  }
}).listen(8000);  
console.log(‘Server  running  at  http://127.0.0.1:8000/‘);  

　　user.js

function  User(id,name,age){
    this.id=id;
    this.name=name;
    this.age=age;
    this.enter=function(){
        console.log(this.name + "进入图书馆");
    }
}
module.exports    =    User;

　　teacher.js继承了User的模块

var User = require("./User");

function Teacher(id,name,age){
	User.apply(this,[id,name,age]);//继承user模块

	this.teach=function(res){//新建自己的方法
		 res.write(this.name+"讲课");
	}
}

module.exports    =    Teacher;

　　-----------------------------------------------------------------------------------------------------------------------------------

读取路由中的方法获取字符串，利用字符串找对应的函数

如http://localhost:8000/login获取login  然后找对应的login函数

nj_router.js

var  http  =  require(‘http‘);  
var url = require(‘url‘);//node自带的URL
var router = require(‘./model/router‘);//导入函数文件

http.createServer(function  (request,  response)  {  
	 response.writeHead(200,  {‘Content-Type‘:  ‘text/html;  charset=utf-8‘});  
 	  if(request.url!=="/favicon.ico"){ 
 	  var pathname = url.parse(request.url).pathname;//获取路径名称
 	  pathname = pathname.replace(/\//,""); //正则去掉/
 	  console.log(pathname);
 	  router[pathname](request,response);//根据路径名称获取到函数从而调用函数
      response.end(‘ ‘);
  }
}).listen(8000);  
console.log(‘Server  running  at  http://127.0.0.1:8000/‘);  

　　router.js

module.exports={
    login:function(req,res){
        res.write("我是login方法");
    },
    zhuce:function(req,res){
        res.write("我是注册方法");
    }
}