express-session example

cookie-session-ex.js

var cookieSession = require('cookie-session');
var express = require('express');
var util = require('util');

var app = express();

app.set('trust proxy', 1); // trust first proxy

app.use(cookieSession({
  name: 'session',
  keys: ['key1', 'key2']
}));

app.use(function (req, res, next) {
  var views = req.session.views;

  (!views) && (views = req.session.views = {});

  // get the url pathname
  var pathname = req.url;
  console.log(`pathname = ${pathname}`);

  // count the views
  views[pathname] = (views[pathname] || 0) + 1

  next()
})

app.get('/:chuchu', function (req, res, next) {
  console.log(`req.params.chuchu = ${req.params.chuchu}`);
  console.log(`req.session = ${util.inspect(req.session, {depth: null})}`);
  res.send('you viewed this page ' + req.session.views['/'+req.params.chuchu] + ' times')
})

var server = app.listen(3000, function () {

  var host = server.address().address
  var port = server.address().port

  console.log('Example app listening at http://%s:%s', host, port)

})

cookies-example.js

/*
  http://code.runnable.com/UTlPPF-f2W1TAAET/how-to-use-cookies-in-express-for-node-js

  http://expressjs.com/api.html#cookieParser
  http://expressjs.com/api.html#res.cookie
  http://expressjs.com/api.html#req.cookies
*/
var express = require('express'),
   cookieParser = require('cookie-parser'),
   bodyParser = require('body-parser'),
   app = express();

var util = require('util');

// parses request cookies, populating
// req.cookies and req.signedCookies
// when the secret is passed, used 
// for signing the cookies.
app.use(cookieParser('my secret here'));

// parses json, x-www-form-urlencoded, and multipart/form-data
app.use(bodyParser.urlencoded({ extended: false }))

// parse application/json
app.use(bodyParser.json())

const minute = 60 * 1000;
app.get('/', function(req, res){
  if (req.cookies.remember) {
    res.cookie('remember', Number(req.cookies.remember) + 1, { maxAge: minute });
    console.log(req.cookies.remember);
    res.send(`Remembered :${req.cookies.remember}. Click to <a href="/forget">forget</a>!.`);
  } else {
    res.send(`
       <form method="post">
         <p>Check to 
           <label>
             <input type="checkbox" name="remember"/> remember me
           </label> 
         <input type="submit" value="Submit"/>.</p>
       </form>
    `);
  }
});

app.get('/forget', function(req, res){
  res.clearCookie('remember');
  res.redirect('back');
});

app.post('/', function(req, res){
  if (req.body.remember) res.cookie('remember', 1, { maxAge: minute });
  res.redirect('back');
});


var server = app.listen(3000, function () {

  var host = server.address().address
  var port = server.address().port

  console.log('Example app listening at http://%s:%s', host, port)

})

hello-session.js

var express = require('express');
var session = require('express-session');
var util = require('util');

var app = express();

app.use(session({
  secret: 'keyboard cat',
  resave: false,
  saveUninitialized: true,
  name: "mycookiesession"
}));

app.use(function (req, res, next) {
  var views = req.session.views;

  (!views) && (views = req.session.views = {});

  // get the url pathname
  var pathname = req.url;
  console.log(`pathname = ${pathname}`);

  // count the views
  views[pathname] = (views[pathname] || 0) + 1

  next()
})

app.get('/:chuchu', function (req, res, next) {
  console.log(`req.params.chuchu = ${req.params.chuchu}`);
  console.log(`req.session = ${util.inspect(req.session, {depth: null})}`);
  res.send('you viewed this page ' + req.session.views['/'+req.params.chuchu] + ' times')
})

var server = app.listen(3000, function () {

  var host = server.address().address
  var port = server.address().port

  console.log('Example app listening at http://%s:%s', host, port)

})

package.json

{
  "name": "simple-example",
  "version": "1.0.0",
  "description": "",
  "main": "hello-session.js",
  "dependencies": {
    "body-parser": "^1.15.0",
    "cookie-parser": "^1.4.1",
    "cookie-session": "^1.2.0",
    "express": "^4.13.4",
    "express-session": "^1.13.0",
    "parse-url": "^1.3.0",
    "parseurl": "^1.3.1"
  },
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}