Nodejs中session的简单使用及通过session实现身份验证的方法

res.setHeader("Set-Cookie", ["sid="+newUser.toCookie()+";path=/;domain="+config.domain+";expires="+new Date("2030") ]); 

sid=275fccab7935736ff68c95c3ddbfaaee|275fccab7935736ff68c95c3ddbfaaee|275fccab7935736ff68c95c3ddbfaaee 

session:function(req, res, next){
req.session = {};
if( req.cookies && req.cookies.sid ){
var a = req.cookies.sid.split("|");
var hexMail = a[0];
var hexPwd = a[1];
var hexRandom = a[2];
UserModel.hexFind(hexMail, hexPwd, hexRandom, function( status ){
//console.log("hexFind", status );
if(status.code == "0"){
//req.cookiesSelecter = cookiesSelecter;
req.session.user = status.result;
}
next();
});
}else{
next();
} 
}

var session = require('express-session');
var cookieParser = require('cookie-parser');

app.use(cookieParser());
app.use(session({
resave: true, // don't save session if unmodified
saveUninitialized: false, // don't create session until something stored
secret: 'love'
}));

app.use(function(req,res,next){
if (!req.session.user) {
if(req.url=="/login"){
next();//如果请求的地址是登录则通过，进行下一个请求
}
else
{
res.redirect('/login');
}
} else if (req.session.user) {
next();
}
});

app.get('/login',function(req,res){
res.render("login");
});
app.post('/login',function(req,res){
if(req.body.username=="love" && req.body.password=="love"){
var user = {'username':'love'};
req.session.user = user;
res.redirect('/admin/app/list');
}
else
{
res.redirect('/login');
}
});
app.get('/logout',function(req,res){
req.session.user = null;
res.redirect('/login');
});