Node Js Session management demo

manpreet Best Answer 2 years ago

    exports.setSession=function(req,res){
req.session.user = 'demo';
//console.log("adding to session " + JSON.stringify(user));
console.log("SessionS-"+req.session.user);
    };


   exports.get_session = function(req, res){
console.log("SessionFun-"+req.session.user);
 };

 Output:         
     SessionS-demo
     SessionFun-undefined

manpreet 2 years ago

Express is based on a connect middleware, so you can reuse connect session implementation rather than writing you own. Example code you can find below.

var http = require('http')
  , express = require('express')
  , app = express();

app.use(express.cookieParser());
app.use(express.session({secret: '1234567890QWERTY'}));

app.get('/set',function(req, res){
    req.session.user = { name:'andbas' };
    res.send('Session set');
});

app.get('/get',function(req, res){
    res.send(req.session.user);
});

http.createServer(app).listen(3000, function(){
    console.log('Express server listening on port 3000');
});

This code set the session user variable when you make a GET /set call, and post it back to you when you do the GET /get. Just try it.

Mistake you do in your own code is that you only modify the req variable, which node http module create for each request. It's not the place where you could hold the data. Instead of this you need to user HTTP headers to setup the key, which will be used to recognize the user and store it data on server (I greatly simplified the concept to make it more understandable). You can review the code in the connect session to understand how it works.