node.js expressjs 4 session 참조 코드

app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');
var parseurl = require('parseurl');

var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

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


app.use('/', routes);
app.use('/users', users);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});

app.use(function (req, res, next) {
    console.log('test');

});

module.exports = app;

users.js

var express = require('express');
var parseurl = require('parseurl');
var router = express.Router();

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

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

    // get the url pathname
    var pathname = parseurl(req).pathname;

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

    next();
});

/* GET users listing. */
router.get('/', function(req, res, next) {
  res.send('respond with a resource');
});



//session test
router.get('/stat', function (req, res, next) {
    var fStr = '/stat num : ' + req.session.views['/stat'] + ' times';
    var sStr = '/foo num : ' + req.session.views['/foo'] + ' times';
    var tStr = '/bar num : ' + req.session.views['/bar'] + ' times';
    var arr = [];
    arr.push(fStr,sStr,tStr);
    res.json(arr);

});

router.get('/foo',function(req,res,next){
    res.send('foo');
});

router.get('/bar',function(req,res,next){
    res.send('bar');
});

module.exports = router;