NodeJS / express-session - 在路由之间保留会话变量

Question

I am trying to set up session variables that would persist between routes.

Problem is, that doesn't seem to happen. When I make a post request, the session variable is updated accordingly - however when trying a different get route via postman (and checking console output), the variable is empty

Here's the code:

const express = require('express')
const session = require('express-session')
const bodyParser = require('body-parser')

const app = express()

app.use(session({
    secret: 'test one',
    resave: false,
    saveUninitialized: true,
    name: "mycookiesession",
    cookie: { secure: false }
}))

let mySession

app.use(function (req, res, next) {
    mySession = req.session
    mySession.basket = []
    next()
})

app.get('/basket', function (req, res) {
    console.log(mySession.basket)
    res.send(mySession.basket)
})

app.post('/basket/add', function (req, res) {
    mySession.basket = [0, 1, 2]
    console.log(mySession.basket)
    res.send('null')
    res.status(201).end()
})

app.listen(3000, function () {
    console.log('Example app listening')
})

What am I doing wrong? I just need to see the value added to the basket by post:basket/add when retrieving the var in the get:basket route

Cheers

Answer 1

You have a middleware the sets basket = [] in your session for every incoming request. This middleware is executed for every request, because the app.use(function ...) command does not specify a path.