Node.js 如何从Redis保存和检索会话

我正在尝试将Redis会话集成到Node.js中编写的身份验证系统中

我已经成功地安装了Redis server、

连接Redis

和Express server

这是我的设置（只是重要的一点）：

现在。。。如何创建、读取和销毁会话？我已经阅读了大量关于如何设置

连接redis

的文章以及这里的许多问题，但我发誓每一篇文章都只是停留在配置上，没有解释如何实际使用它

---

我知道这可能非常简单，但请不要投反对票，只是解释一下：）。

这应该就是它的全部内容。您可以通过

req.session

访问路由处理程序中的会话。会话将自动创建、保存和销毁

如果需要为用户手动创建新会话，请调用

req.session.regenate（）

如果需要手动保存，可以调用

req.session.save（）

如果需要手动销毁，可以调用

req.session.destroy（）

有关方法和属性的完整列表，请参见。

请考虑此代码

var express = require('express');
var redis   = require("redis");
var session = require('express-session');
var redisStore = require('connect-redis')(session);
var bodyParser = require('body-parser');
var client  = redis.createClient();
var app = express();

app.set('views', __dirname + '/views');
app.engine('html', require('ejs').renderFile);

app.use(session({
    secret: 'ssshhhhh',
    // create new redis store.
    store: new redisStore({ host: 'localhost', port: 6379, client: client,ttl :  260}),
    saveUninitialized: false,
    resave: false
}));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));

app.get('/',function(req,res){  
    // create new session object.
    if(req.session.key) {
        // if email key is sent redirect.
        res.redirect('/admin');
    } else {
        // else go to home page.
        res.render('index.html');
    }
});

app.post('/login',function(req,res){
    // when user login set the key to redis.
    req.session.key=req.body.email;
    res.end('done');
});

app.get('/logout',function(req,res){
    req.session.destroy(function(err){
        if(err){
            console.log(err);
        } else {
            res.redirect('/');
        }
    });
});

app.listen(3000,function(){
    console.log("App Started on PORT 3000");
});

因此，您需要安装连接redis，并将express session实例传递给它

然后在中间件中初始化redistore，并提供如下服务器详细信息

app.use(session({
    secret: 'ssshhhhh',
    // create new redis store.
    store: new redisStore({ host: 'localhost', port: 6379, client: client,ttl :  260}),
    saveUninitialized: false,
    resave: false
})); 

我把ttl调到260，你可以增加。TTL达到极限后，会自动删除redis键

在路由器中，您可以使用req.session变量设置、编辑或销毁会话

还有一件事

如果您想要定制cookie，即与Redis商店中的cookie不同，您可以使用cookie解析器设置cookie机密

希望能有帮助

---

链接：

您还可以使用Redis monitor工具实时查看所有操作！当您刷新应用程序时，您将在控制台窗口中看到数据

redis-cli monitor

使用tj/connect redis的会话输出示例

1538704759.924701 [0 unix:/tmp/redis.sock] "expire" "sess:F9x-YgbgXu1g7RG8tFlkwY3RV0JzHgCh" "3600"
1538704759.131285 [0 unix:/tmp/redis.sock] "get" "sess:F9x-YgbgXu1g7RG8tFlkwY3RV0JzHgCh"
1538704787.179318 [0 unix:/tmp/redis.sock] "set" "sess:Hl3LPbOBdKO44SG4zQHFn2gfdiWTwzWW" "{\"cookie\":{\"originalMaxAge\":3600000,\"expires\":\"2018-10-05T02:59:47.178Z\",\"secure\":true,\"httpOnly\":true,\"domain\":\".indospace.io\",\"path\":\"/\"},\"path\":\"/\",\"userAgent\":{\"family\":\"NewRelicPingerBot\",\"major\":\"1\",\"minor\":\"0\",\"patch\":\"0\",\"device\":{\"family\":\"Other\",\"major\":\"0\",\"minor\":\"0\",\"patch\":\"0\"},\"os\":{\"family\":\"Other\",\"major\":\"0\",\"minor\":\"0\",\"patch\":\"0\"}},\"ip\":\"184.73.237.85\",\"page_not_found_count\":0,\"city\":\"Ashburn\",\"state\":\"VA\",\"city_state\":\"Ashburn, VA\",\"zip\":\"20149\",\"latitude\":39.0481,\"longitude\":-77.4728,\"country\":\"US\"}" "EX" "3599"
1538704787.179318 [0 unix:/tmp/redis.sock] "set" "sess:Hl3LPbOBdKO44SG4zQHFn2gfdiWTwzWW" "{\"cookie\":{\"originalMaxAge\":3600000,\"expires\":\"2018-10-05T02:59:47.178Z\",\"secure\":true,\"httpOnly\":true,\"domain\":\".indospace.io\",\"path\":\"/\"},\"path\":\"/\",\"userAgent\":{\"family\":\"NewRelicPingerBot\",\"major\":\"1\",\"minor\":\"0\",\"patch\":\"0\",\"device\":{\"family\":\"Other\",\"major\":\"0\",\"minor\":\"0\",\"patch\":\"0\"},\"os\":{\"family\":\"Other\",\"major\":\"0\",\"minor\":\"0\",\"patch\":\"0\"}},\"ip\":\"184.73.237.85\",\"page_not_found_count\":0,\"city\":\"Ashburn\",\"state\":\"VA\",\"city_state\":\"Ashburn, VA\",\"zip\":\"20149\",\"latitude\":39.0481,\"longitude\":-77.4728,\"country\":\"US\"}" "EX" "3599"

为什么我总是看到“创建新会话对象”的评论？这是否意味着运行

req.session.regenate（）

？你能澄清一下吗？

1538704759.924701 [0 unix:/tmp/redis.sock] "expire" "sess:F9x-YgbgXu1g7RG8tFlkwY3RV0JzHgCh" "3600"
1538704759.131285 [0 unix:/tmp/redis.sock] "get" "sess:F9x-YgbgXu1g7RG8tFlkwY3RV0JzHgCh"
1538704787.179318 [0 unix:/tmp/redis.sock] "set" "sess:Hl3LPbOBdKO44SG4zQHFn2gfdiWTwzWW" "{\"cookie\":{\"originalMaxAge\":3600000,\"expires\":\"2018-10-05T02:59:47.178Z\",\"secure\":true,\"httpOnly\":true,\"domain\":\".indospace.io\",\"path\":\"/\"},\"path\":\"/\",\"userAgent\":{\"family\":\"NewRelicPingerBot\",\"major\":\"1\",\"minor\":\"0\",\"patch\":\"0\",\"device\":{\"family\":\"Other\",\"major\":\"0\",\"minor\":\"0\",\"patch\":\"0\"},\"os\":{\"family\":\"Other\",\"major\":\"0\",\"minor\":\"0\",\"patch\":\"0\"}},\"ip\":\"184.73.237.85\",\"page_not_found_count\":0,\"city\":\"Ashburn\",\"state\":\"VA\",\"city_state\":\"Ashburn, VA\",\"zip\":\"20149\",\"latitude\":39.0481,\"longitude\":-77.4728,\"country\":\"US\"}" "EX" "3599"
1538704787.179318 [0 unix:/tmp/redis.sock] "set" "sess:Hl3LPbOBdKO44SG4zQHFn2gfdiWTwzWW" "{\"cookie\":{\"originalMaxAge\":3600000,\"expires\":\"2018-10-05T02:59:47.178Z\",\"secure\":true,\"httpOnly\":true,\"domain\":\".indospace.io\",\"path\":\"/\"},\"path\":\"/\",\"userAgent\":{\"family\":\"NewRelicPingerBot\",\"major\":\"1\",\"minor\":\"0\",\"patch\":\"0\",\"device\":{\"family\":\"Other\",\"major\":\"0\",\"minor\":\"0\",\"patch\":\"0\"},\"os\":{\"family\":\"Other\",\"major\":\"0\",\"minor\":\"0\",\"patch\":\"0\"}},\"ip\":\"184.73.237.85\",\"page_not_found_count\":0,\"city\":\"Ashburn\",\"state\":\"VA\",\"city_state\":\"Ashburn, VA\",\"zip\":\"20149\",\"latitude\":39.0481,\"longitude\":-77.4728,\"country\":\"US\"}" "EX" "3599"