Express+mongooseでsession管理

mongooseでセッション管理

パッケージインストール

$ npm install --save mongoose
$ npm install --save express-session
$ npm install --save connect-mongo

プロジェクト雛形作成

$ express session

app.js

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

var index = 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', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__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')));

var mongoose = require('mongoose');
const option = {
  useMongoClient: true
};
mongoose.connect("mongodb://localhost/session",option);
app.use(session({
  secret: 'somthing secret',
  saveUninitialized: true,
  resave: true,
  store: new MongoStore({mongooseConnection: mongoose.connection})
}));

app.use('/', index);
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 handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;

routers/users.js

/users へのアクセスでアクセス数をカウントする。

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

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

module.exports = router;

ブラウザでアクセス

console

$ npm start
> session@0.0.0 start ~/session
> node ./bin/www

localhost:3000/users

sessionの viewsパラメータに書き込んだカウント数がアクセスごとに上がっていく

Session {
 cookie:
 { path: '/',
 _expires: null,
 originalMaxAge: null,
 httpOnly: true},
 views: 20 }

GET /users 304 12.501 ms - -

mongodbの中身確認

views に 数字が保存されているのを確認

$ mongo
MongoDB shell version v3.4.10
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.9
> use session
switched to db session
> db.sessions.find()
{ "_id" : "1V04JMJx6rsIcgAtl1LJ0ovxaho_H1aB", "session" : "{\"cookie\":{\"originalMaxAge\":null,\"expires\":null,\"httpOnly\":true,\"path\":\"/\"},\"views\":20}", "expires" : ISODate("2017-12-04T04:12:29.189Z") }
>