Node.js使用Express和Mongoose设置Passport的问题

我是Node.js的新手。正在尝试设置用户帐户创建并使用Passport登录。我做不到。我收到了未经授权的消息，尽管我使用现有用户登录并通过。到目前为止，我的代码：

var express = require('express');
var http = require('http');
var path = require('path');
var request = require('request');
var app = express();
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var MongoClient = require('mongodb').MongoClient;
app.set('port', process.env.PORT || 3000);
app.set('views', path.join(__dirname, 'views'));
app.engine('html', require('ejs').renderFile);
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.json());
app.use(express.urlencoded());
app.use(express.methodOverride());
app.use(passport.initialize());
app.use(passport.session());
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));
app.use(express.bodyParser());
app.use(app.router);
app.enable('trust proxy');
if ('development' == app.get('env')) {
}
var httpserver = http.createServer(app).listen(app.get('port'), function(){
  console.log('Express server listening on port ' + app.get('port'));
});
var mongoose = require('mongoose'),
    Schema = mongoose.Schema,
    passportLocalMongoose = require('passport-local-mongoose');
/* Database has _id field but i guess i don't need to add anything here?*/
var Accoun = new Schema({
    username: String,
    password: String
});
/* Database collection is called 'users'*/
Accoun.plugin(passportLocalMongoose);
var Account = mongoose.model('users', Accoun);
passport.use(new LocalStrategy(Account.authenticate()));
passport.serializeUser(Account.serializeUser());
passport.deserializeUser(Account.deserializeUser());
mongoose.connect('xxxmyconnectionstring');
app.get('/', function(req, res) {
  res.render('login.html');
});

  app.post('/login', passport.authenticate('local'), function(req, res) {
      res.redirect('/myteam.html');
  });

我需要一些专家的帮助。。。

问候，