node.js中的多个会话

Question

我正在node.js，express.js，express-session.js和angular.js中创建我的第一个应用程序。 我在其中创建了一个简单的登录功能。用户登录并可以看到他所有的在线朋友。

我面临的问题是我在chrome中打开一个窗口，在firefox中打开另一个窗口。从不同的帐户登录，但显示（在两个浏览器窗口中）拥有最新登录信息的朋友。怎么处理这个问题？

这是我的server.js文件

var app = require("express")();
var session = require('express-session');
var mysql = require("mysql");
var bodyParser = require('body-parser');
var http = require('http').Server(app);
var io = require("socket.io")(http);


//initialize the session
app.use(session({
    secret: "online",
    resave: true,
    saveUninitialized: true
}));
var session_data;


app.use(require("express").static('data'));

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

/* Creating MySQL connection.*/
var con    =    mysql.createPool({
      connectionLimit   :   100,
      host              :   'localhost',
      user              :   'root',
      password          :   '',
      database          :   'testDbChat'
});


app.get("/",function(req,res){
    res.sendFile(__dirname + '/data/messages.html');
});


/*  Socket connectes ur machine to server */


    io.on('connection',function(socket){
        socket.on('update_list',function(data){
            //data.purpose;
            console.log(data);

            if((String(data.purpose.trim()))=='list friends'){
                var query="update members set online = ? where id = ?";
                con.query(String(query),['Y',data.id],function(err,rows){
                    // var query="select * from user where id !='"+data.id+"'";
                    var query="SELECT  members.FirstName,members.LasName,members.ID,friends.FriendsTwoID,friends.FriendOneID FROM friends JOIN members ON members.ID = friends.FriendsTwoID OR members.ID = friends.FriendOneID WHERE (friends.FriendOneID = '"+data.id+"' OR friends.FriendsTwoID = '"+data.id+"') AND (friends.`Status` = 'Confirmed' AND members.ID != '"+data.id+"')";
                    con.query(String(query),function(err,rows){

                        io.emit('logout update',JSON.stringify(rows));
                    });
                });
            }
            else{
                var query="update members set online = ? where id = ?";
                con.query(String(query),['N',data.id],function(err,rows){
                    //var query="select * from user where id !='"+data.id+"'";
                    var query="SELECT members.FirstName,friends.FriendsTwoID From friends JOIN members ON members.ID = friends.FriendsTwoID  where friends.FriendOneID ='"+data.id+"' AND friends.Status = 'Confirmed' ";
                    con.query(String(query),function(err,rows){
                        io.emit('logout update',JSON.stringify(rows));
                    });
                });
            }
        });
    });






app.post('/get_list', function (req, res) {
  var query="select * from friends";
  con.query(String(query),function(err,rows){
      res.write(JSON.stringify(rows));
      res.end();
  });
});



app.post('/login', function (req, res) {
    session_data=req.session;
    console.log(req.session); // depricated
    data = {
        name:req.body.name,
        password:req.body.password
    };
    
    console.log(data);
    session_data.password=data.password;
    session_data.name=data.name;
    var obj={};
    var query="select * from members where Username = '"+data.name+"' and Password='"+data.password+"'";
    con.query(String(query),function(err,rows){

        if(rows.length > 0){

            console.log(rows[0].ID);
            var un=new Buffer(String(rows[0].FirstName)).toString('base64');
            var ui=new Buffer(String(rows[0].ID)).toString('base64');
            obj.path_name="/messages.html#?un="+un+"&ui="+ui;
            res.write(JSON.stringify(obj));
            res.end();
        }else{

            obj.path_name="invalid";
            res.write(JSON.stringify(obj)); // writes the response but has to be sent by response.end
            res.end();
        }
    });
});

app.get('/messages', function (req, res) {
    session_data=req.session;
    if(session_data.name){
        res.sendFile(__dirname + '/data/messages.html');
    }else{
        res.redirect('/');
    }
});


app.post('/logout', function (req, res) {
    var query="update members set online = ? where id = ?";
    con.query(String(query),['N',req.body.id],function(err,rows){});
    req.session.destroy(function(err){
        res.end();
    });
});

app.get('/home', function (req, res) {
    session_data=req.session;
    console.log(session_data);
    if(session_data.name){
        res.sendFile(__dirname + '/data/messages.html');
    }else{
        res.redirect('/');
    }
});

http.listen(3000,function(){
    console.log("Listening on 3000");
});