express中自定義session

我用express-session redis-conect這兩個通用的方案來弄sesion的時候一直無效，然後我測試了cookie發現可以正常使用，行，那隻能自己實現session了，
在express的腳手架環境下再準備好以下模塊

    "redis": "^2.4.2",
    "uuid": "^3.2.1"

登錄成功的邏輯中設置cookie

var UUID=require('uuid')
var token='token'+UUID.v1()
var redis = require('redis');
var client = redis.createClient(config.redis_port,config.redis_host);
client.on('connect',()=>{
    client.hmset(token, {
        "expires":Date.now()+config.token_expires_time, // NOTE: key and value will be coerced to strings
        "user": JSON.stringify(user)
    });
    res.cookie('token',token,{ expires:new Date(Date.now()+config.token_expires_time), httpOnly: true });
    return res.render('sign/signin', {success: '登陸成功'});
})

編寫一箇中間件

//判段用戶是否登錄
app.use(function(req,res,next){
    if(req.cookies.token){
    var redis = require('redis');
    var client = redis.createClient(config.redis_port,config.redis_host);
    client.on('connect',()=>{
      //將鍵值放入redis中進行查詢
      client.hgetall(req.cookies.token, function (err, obj) {
        //以過期，被定時任務清除
        if(obj!=null){
          global.current_user=JSON.parse(obj.user)
        }else{
          global.current_user=false 
          res.cookie('token','')
        }
        next()
      });     
    })
  }
  else{
    global.current_user=false
    next()
  }
})

退出登錄

    if(req.cookies.token){
        var redis = require('redis');
        var client = redis.createClient(config.redis_port,config.redis_host);
        client.on('connect',()=>{
            client.del(req.cookies.token,(err,response)=>{
                if (err) return false;
                res.cookie('token','')
                res.redirect('/');          
            })
        })
    }

再加上腳本定時清除過期的session。搞定