>PROBLEM
node.js: express: req.session returns "undefined".
console.log(req.session)
- Returns:
undefined
>SOLUTION
The session block declaration shall come before the routing blocks.
>>BEFORE
// error handler
app.use(function (err, req, res, next) {
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
res.status(err.status || 500);
res.render('error');
});
// ...
const session = require('express-session');
app.set('trust proxy', 1) // trust first proxy
app.use(session({
secret: ConfigSvc.configValue('sessionKey'),
saveUninitialized:true,
cookie: { maxAge: oneDay, secure: true },
resave: false
}));
>>AFTER
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var todoRouter = require('./routes/todo');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({
extended: false
}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
var favicon = require('serve-favicon');
const ConfigSvc = require('./utils/ConfigSvc');
app.use(favicon(__dirname + '/public/favicon.ico'));
const oneDay = 8640000;
const session = require('express-session');
app.set('trust proxy', 1) // trust first proxy
app.use(session({
secret: ConfigSvc.configValue('sessionKey'),
saveUninitialized:true,
cookie: { maxAge: oneDay, secure: true },
resave: false
}));
app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/todo', todoRouter);
// catch 404 and forward to error handler
app.use(function (req, res, next) {
next(createError(404));
});
// error handler
app.use(function (err, req, res, next) {
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
res.status(err.status || 500);
res.render('error');
});
>ENV
Node.js 16
Express
JWT
