Express 是 node.js Web應(yīng)用框架, 幫助你創(chuàng)建各種 Web 應(yīng)用，和豐富的 HTTP 工具。使用 Express 可以快速地搭建一個(gè)完整功能的網(wǎng)站。Express 框架核心特性：可以設(shè)置中間件來(lái)響應(yīng) HTTP 請(qǐng)求。定義了路由表用于執(zhí)行不同的 HTTP 請(qǐng)求動(dòng)作?？梢酝ㄟ^(guò)向模板傳遞參數(shù)來(lái)動(dòng)態(tài)渲染 HTML 頁(yè)面?；綿emo---------------------------------------------------- var express = require('express') var app = express();app.get('/', function (req, res) {res.send("Kadaki"); });var server = app.listen(8080, function () {var host = server.address().address;var port = server.address().port;console.log('host' + host + ':port' + port); });處理GET和POST------------------------------------------------- var express = require('express'); var app = express();// 主頁(yè)輸出 "Hello World" app.get('/', function (req, res) {console.log("主頁(yè) GET 請(qǐng)求");res.send('Hello GET'); })// POST 請(qǐng)求 app.post('/', function (req, res) {console.log("主頁(yè) POST 請(qǐng)求");res.send('Hello POST'); })// /del_user 頁(yè)面響應(yīng) app.get('/del_user', function (req, res) {console.log("/del_user 響應(yīng) DELETE 請(qǐng)求");res.send('刪除頁(yè)面'); })// /list_user 頁(yè)面 GET 請(qǐng)求 app.get('/list_user', function (req, res) {console.log("/list_user GET 請(qǐng)求");res.send('用戶列表頁(yè)面'); })// 對(duì)頁(yè)面 abcd, abxcd, ab123cd, 等響應(yīng) GET 請(qǐng)求 app.get('/ab*cd', function(req, res) { console.log("/ab*cd GET 請(qǐng)求");res.send('正則匹配'); })var server = app.listen(8080, function () {var host = server.address().addressvar port = server.address().portconsole.log("應(yīng)用實(shí)例，訪問(wèn)地址為 http://%s:%s", host, port)})文件上傳-------------------------------------------------var express = require('express'); var app = express(); var fs = require("fs");var bodyParser = require('body-parser'); var multer = require('multer');app.use('/public', express.static('public')); app.use(bodyParser.urlencoded({ extended: false })); app.use(multer({ dest: '/tmp/' }).array('image'));app.get('/index.htm', function (req, res) {res.sendFile(__dirname + "/" + "index.htm"); })app.post('/file_upload', function (req, res) {console.log(req.files[0]); // 上傳的文件信息var des_file = __dirname + "/" + req.files[0].originalname;fs.readFile(req.files[0].path, function (err, data) {fs.writeFile(des_file, data, function (err) {if (err) {console.log(err);} else {response = {message: 'File uploaded successfully',filename: req.files[0].originalname};}console.log(response);res.end(JSON.stringify(response));});}); })var server = app.listen(8080, function () {var host = server.address().addressvar port = server.address().portconsole.log("應(yīng)用實(shí)例，訪問(wèn)地址為 http://%s:%s", host, port)})Cookies-----------------------------------------------------var express = require('express') var cookieParser = require('cookie-parser') var util = require('util');var app = express() app.use(cookieParser())app.get('/', function(req, res) {console.log("Cookies: " + util.inspect(req.cookies));res.send("Kadaki"); })app.listen(8080)

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