Node.js + Express 4 + Passport.js如何获取当前login的所有用户列表？

我已经设置我的Node.js服务器如下：

var Express = require('express'); var Path = require('path'); var Favicon = require('serve-favicon'); var Logger = require('morgan'); var CookieParser = require('cookie-parser'); var BodyParser = require('body-parser'); var Passport = require('passport'); var LocalStrategy = require('passport-local').Strategy; var Mongoose = require('mongoose'); var Routes = require('./routes/index'); var Users = require('./routes/users'); //var Login = require('./routes/login'); var App = Express(); // view engine setup App.set('views', Path.join(__dirname, 'views')); App.set('view engine', 'jade'); // uncomment after placing your favicon in /public //app.use(favicon(__dirname + '/public/favicon.ico')); App.use(Logger('dev')); App.use(BodyParser.json()); App.use(BodyParser.urlencoded({ extended: false })); App.use(CookieParser()); App.use(require('express-session')({ secret: 'keyboard cat', resave: false, saveUninitialized: false })); App.use(Passport.initialize()); App.use(Passport.session()); App.use(require('stylus').middleware(Path.join(__dirname, 'public'))); App.use(Express.static(Path.join(__dirname, 'public'))); App.use('/', Routes); //App.use('/users', Users); //App.use('/login', Login); // passport config var Account = require('./models/account'); Passport.use(new LocalStrategy(Account.authenticate())); Passport.serializeUser(Account.serializeUser()); Passport.deserializeUser(Account.deserializeUser()); // mongoose Mongoose.connect('mongodb://localhost/passport_local_mongoose_express4'); // catch 404 and forward to error handler App.use(function (req, res, next) { var err = new Error('Not Found'); err.status = 404; next(err); }); // error handlers // development error handler // will print stacktrace if (App.get('env') === 'development') { App.use(function (err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: err }); }); } // production error handler // no stacktraces leaked to user App.use(function (err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: {} }); }); module.exports = App; 

Authenitcation工作得很好，现在我希望获得我仪表板上所有login用户的列表。 我怎么才能得到它？