04全栈工程师--2016-08-09

回顾

• HTTP协议
• Request对象
• Reponse对象
• Nodejs创建服务器模块

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Nodejs创建一个静态资源服务器

• http模块 const http = require(‘http’);
• url模块 const url = require(‘url’);
• fs模块 const fs = require(‘fs’);

创建一个服务器

var port = 8000;var ip = '127.0.0.1';var http = require('http); var server = http.createServer(function(request,reponse){        reponse.writeHead(200,{'Content-Type':'text/plain'});        reponse.write('hellow Nodejs');        reponse.end();}).listen(port,ip);

实现路由，获取URL

var url = require('url');var pathname = url.parse(request.url).pathname;var server = http.createServer(function(request,reponse){    var pathname = url.parse(request.url).pathname;    reponse.write(pathname);    reponse.end(); });

读取静态文件

var fs = require('fs');var path = require('path'); var sever = http.createServer(function(request,reponse){var pathname = url.parse(request.url)pathname;var realPath = 'assets' + pathname; path.exists(realPath,function(exists){        if(!esists){            reponse.write(404,{'Content-Type':'texty/plain'});            reponse.write('This request url' + pathname + 'not exists in server');            reponse.end();        }else{            fs.readFile(realPath, "binary", function(err, file) {            if (err) {                response.writeHead(500, {‘Content-Type‘: ‘text/plain‘});                response.end(err);             } else {                response.writeHead(200, {‘Content-Type‘: ‘text/html‘});                response.write(file, "binary");                response.end();        }    });});