Express.js会话未定义。 Redis

Question

试图获得与Redis建立的会话。我有一个dokku容器中的Redis DB，链接到我的应用程序（也位于dokku容器中）。我一直没有定义会话。我已经将事情剥离到了最低限度，也检查了事情的执行顺序。我仍然没有定义。

我在这里读过'session' is undefined when using express/redis for session store和Express js session undefined无济于事。

我不应该使用cookie解析器，因为表达式会话中有cookie的东西，文档说cookie解析器会导致表达式会话的问题。

var express = require('express'); 
var session = require('express-session'); 
var redisStore = require('connect-redis')(session); 
var bodyParser = require('body-parser'); 

var app = express(); 

app.set('port', (process.env.PORT || 5000)); 

var redisURL = 'redis://xxxxx:1234567@bar-redis-foo:6379'; 
var store = new redisStore({ url: redisURL }); 

app.use(session({ 
    secret: 'ssshhhhh', 
    store: store, 
    saveUninitialized: true, 
    resave: true 
})); 


app.use(express.static(__dirname + '/public')); 
app.use(bodyParser.json()); // to support JSON-encoded bodies 
app.use(bodyParser.urlencoded({ // to support URL-encoded bodies 
    extended: true 
})); 

app.get('/', function(req, res, next) { 
    console.log(req.session); // Logs Undefined 
    res.send('Hello'); 
}); 

Answer 1

检查您的redis连接并重新运行。示例代码如下所示。

"use strict"; 

const express = require("express"); 
const bodyParser = require("body-parser"); 
const session = require("express-session"); 
const RedisStore = require("connect-redis")(session); 

const app = express(); 

app.use(bodyParser.json()); 
app.use(bodyParser.urlencoded({extended: false})); 

app.use(session({ 
    secret: "$kx(Fj$uB!Ug!@jCkguFmc6f7t<c-e$9", 
    resave: false, 
    saveUninitialized: true, 
    store: new RedisStore({ 
     url: "redis://:********@pub-redis-12766.eu-central-1-1.1.ec2.redislabs.com:12766", 
     ttl: 5 * 60 // 5 minute (Session store time) 
    }) 
})); 

app.use(function (request, response, next) { 
    let path = request.originalUrl; 

    if (request.session.user) { 
     request.session.reload(function (err) { //session expire time regenerate 
      if (!err) { 
       next(); 
      } else { 
       response.redirect('/login'); 
      } 
     }); 
    } else { 
     if (path == '/login') { 
      next(); 
     } else { 
      response.redirect('/login'); 
     } 
    } 
}); 

app.get('/', function(request, response) { 
    if (request.session.user) { 
     response.send(request.session.user); 
    } else { 
     response.redirect("/login"); 
    } 
}); 

app.get('/login', function(request, response) { 
    if (request.session.user) { 
     response.redirect("/"); 
    } else { 
     request.session.user = {username: "halil"}; //custom key {user} and custom data {username: "halil"} 
    } 

    response.send('Login'); 
}); 

app.get('/logout', function(request, response) { 
    if (request.session.user) { 
     request.session.destroy(); 
     response.redirect("/login"); 
    } else { 
     response.redirect("/login"); 
    } 
}); 

app.listen(app.get('port'), function() { 
    console.log('App is working on port: ' + app.get('port')); 
});