Question

以下是我的app.js代码

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 cookieSession = require('cookie-session');
var session = require('express-session');
var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', routes);
app.use('/users', users);
app.use(cookieParser());
app.use(cookieSession({
    secret: "HelloExpressSESSION",
    resave: true,
    saveUninitialized: true
}));

这是我的routes / index.js文件

var express = require('express');
var router = express.Router();
var user = require('./user');

router.get('/', function(req, res, next) {
  res.render('index', { title: 'My Blog' });
});


router.get('/signin', user.signin);
module.exports = router;

这是我的routes / user.js文件

exports.signin = function(req, res){
  if(req.session.logined){
    res.redirect('/');
    return;
  }
  res.render('users/register');
}

当我尝试访问localhost：3000 / signin页面时，我总是在user.js文件中出现如下错误

cannot not read property 'logined' of undefined

我的代码有什么问题吗？

Answer 1

我想我修好了但我不知道为什么。

我把

app.use('/', routes);
app.use('/users', users);

之后

app.use(cookieSession({
    secret: "HelloExpressSESSION",
    resave: true,
    saveUninitialized: true
}));

然后一切正常。谁能解释一下？

为什么总是有错误＆＃34;无法读取属性＆＃39;已记录＆＃39;未定义＆＃34;？

1 个答案: