NodeJS with Express 4.x

//静态文件目录
app.use(‘/public‘, express.static(__dirname+‘/public‘));
app.use(‘/data‘, express.static(__dirname+‘/data‘));

//可以让 http://www.domain.com/image/aaa.jpg访问到服务器public目录下的aaa.jpg
var express = require("express"),
      app       = express();

app.use(‘/image‘,express.static(__dirname + ‘/public‘));

//输出静态文件
res.sendfile("/views/index.html");

//设定输出json
http.get("/haha/", function(req, res){
    //設定HTTP Header
    res.setHeader(‘Content-Type‘, ‘application/json‘);
    res.send({a:123,b:456});
});

//跳转
res.redirect("http://google.com");

//NodeJS显示当前目录：
__dirname

// 1, 加载cookie模块
var cookieParser = require(‘cookie-parser‘);

// 2, 激活cookie
app.use(cookieParser());

// 3, 在请求的req里获取cookies
JSON.stringify(req.cookies);

 
var cookieSession    = require(‘cookie-session‘);
app.use(cookieSession());




//清空session # Destroying a session
req.session = null



var express = require(‘express‘)
var session = require(‘cookie-session‘)

var app = express()

app.use(session({
  keys: [‘key1‘, ‘key2‘],
  secureProxy: true // if you do SSL outside of node
}))

app.use(function (req, res, next) {
  var n = req.session.views || 0
  req.session.views = ++n
  res.end(n + ‘ views‘)
})

app.listen(3000)