Redis Store没有get方法？

Question

http://senchalabs.github.com/connect/middleware-session.html提到.... “每个会话存储都必须实现以下方法：”

1. .get(sid,callback)
2. .set(sid, session,callback)
3. .destroy(sid,callback)

我正在使用以下代码来尝试获取 SID：

Node JavaScript，使用 Socket.io 连接

io.sockets.on('connection', function(socket) {
  var sid = socket.id;
  if (sid) {
    sessionStore.get(sid, function (error, session) {
      console.log("Connect Sid: " + sid);
    });
  }
});

我收到以下错误：

TypeError: Object function RedisStore(options) {
    options = options || {};
    Store.call(this, options);
    this.client = new redis.createClient(options.port || options.socket, options.host, options);
    if (options.pass) {
      this.client.auth(options.pass, function(err){
        if (err) throw err;
      });    
    }

    if (options.db) {
      var self = this;
      self.client.select(options.db);
      self.client.on("connect", function() {
        self.client.send_anyways = true;
        self.client.select(options.db);
        self.client.send_anyways = false;
      });
    }
  } has no method 'get'

包含 redis

//Redis store for storage
var sessionStore = require('connect-redis')(express); 
...
...
app.use(express.session({secret: "keyboard cat",store: new sessionStore}));

Answer 1

看来您在实例化商店时忘记输入 new 了？

Answer 2

取自： https://github.com/visionmedia/connect-redis

This means express users may do the following, since express.session.Store points to the connect.session.Store function:

这似乎有效：

express.session.Store(sid, function(){ console.log("Connect Sid: " + sid); });

Answer 3

我是这样做的：

var RedisStore = require('connect-redis')(express); 
var sessionStore = new RedisStore; 
...
app.use(express.session({secret: "keyboard cat",store: sessionStore}));

这样，如果需要，您可以稍后使用 socket.io 代码中的 sessionStore 对象引用会话数据。