Author:@南非波波

一、http模块

创建一个服务器监听指定端口，浏览器等客户端会通过该服务器端获取到相应的信息

示例：
#test.js
    var fs = require('fs');
    var http = require('http');
    //创建server
    http.createServer(function(request,response){
        fs.readFile('E:/projects/all-code/笔记/js && html/Html模板主题/登录模板/login5/index.html','utf-8',function(error,data){
            if(error){
                console.log("读取文件出错！");
                response.end('页面获取失败!');
            }else{
                console.log("读取文件成功,返回页面数据!");
                response.end(data);
            }

        });
    }).listen(8000); //绑定指定端口号

    console.log('监听8000端口...');
#控制台会首先打印监听8000端口...,当浏览器访问localhost:8000的时候，控制台打印“读取文件成功，返回页面数据！”，页面返回指定的html页面

二、url模块

1. parse

获取url的相关信息
#url.parse(request.url)  http://localhost:8000/query.html
    Url {
      protocol: null,
      slashes: null,
      auth: null,
      host: null,
      port: null,
      hostname: null,
      hash: null,
      search: null,
      query: null,
      pathname: '/query.html',
      path: '/query.html',
      href: '/query.html' }
    Url {
      protocol: null,
      slashes: null,
      auth: null,
      host: null,
      port: null,
      hostname: null,
      hash: null,
      search: null,
      query: null,
      pathname: '/favicon.ico',
      path: '/favicon.ico',
      href: '/favicon.ico' }

示例：
    var fs = require('fs');
    var http = require('http');
    var url = require('url');
    http.createServer(function(request,response){
        var urlObj = url.parse(request.url);
        console.log(urlObj);
        var pathname = urlObj.pathname;
        fs.readFile(pathname.substr(1),'utf-8',function(error,data){
            response.end(pathname.substr(1));
        });

    }).listen(8000);
    console.log("端口监听8000端口...");




示例：

    var fs = require('fs');
    var http = require('http');
    var url = require('url');
    http.createServer(function(request,response){
        var urlObj = url.parse(request.url);
        console.log(urlObj);
        var pathname = urlObj.pathname;
        if(pathname === '/'){
            requestAndresponse('/index.html',response);
        }else if(pathname === '/test.html'){
            response.end('msg:{hostname:"intel",IP:192.168.13.1}');
        }else{
            requestAndresponse(pathname,response);
        }


    }).listen(8000);
    console.log("端口监听8000端口...");

    function requestAndresponse(pathname,response){
            fs.readFile(pathname.substr(1),'utf-8',function(error,data){
            if(error){
                response.writeHead(404);
                response.end('file not found!');
            }else{
                response.end(pathname.substr(1));
            }

        });
    };