"Invalid status code" 当在数据库中找不到用户时

Question

我正在尝试使用快速会话制作一个简单的登录系统，但当在数据库中找不到用户时，我一直收到“无效状态代码”。

我想做的是当在数据库中找不到用户时，它将客户端重定向到特定的路由。但是它没有重定向客户端，而是抛出了一个错误。

如果找到用户，它工作得很好，没有错误。

如果有人能帮助指导我解决问题，那将不胜感激！

登录路线

//@ROUTE: Log in route
//@DESCRIPTION: Renders the login page
app.get('/login', (req, res)=> {
    res.render('login.ejs', {title: "Login :: Clipit", curSession: req.session})
})

登录post

//@ROUTE: Log in post
//@DESCRIPTION: Finds the user in the database, and logs him in (creates a new session)
app.post('/api/login', (req, res)=> {
    const username = req.body.inputUsername
    const password = req.body.inputPassword

    userDB.findOne({username: username, password: password}, (err, result)=> {
        if(err) {
            throw err;
        } else if(!result) {
            res.redirect('/login-error', {curSession: req.session})
        } else {
            req.session.username = result.username
            req.session.loggedIn = true
            console.log(`${req.session.username} has logged in.`)
            res.redirect('/')
        }
    })
})

错误：

express deprecated res.redirect(url, status): Use res.redirect(status, url) instead server.js:185:17
node:events:346
      throw er; // Unhandled 'error' event
      ^

RangeError [ERR_HTTP_INVALID_STATUS_CODE]: Invalid status code: { curSession: [Session] }
    at new NodeError (node:internal/errors:329:5)
    at ServerResponse.writeHead (node:_http_server:282:11)
    at ServerResponse.writeHead (C:\Users\gabri\Desktop\clipit\node_modules\on-headers\index.js:44:26)
    at ServerResponse._implicitHeader (node:_http_server:273:8)
    at writetop (C:\Users\gabri\Desktop\clipit\node_modules\express-session\index.js:276:15)
    at ServerResponse.end (C:\Users\gabri\Desktop\clipit\node_modules\express-session\index.js:356:16)
    at ServerResponse.redirect (C:\Users\gabri\Desktop\clipit\node_modules\express\lib\response.js:951:10)
    at C:\Users\gabri\Desktop\clipit\server.js:185:17
    at C:\Users\gabri\Desktop\clipit\node_modules\mongoose\lib\model.js:4870:18
    at processTicksAndRejections (node:internal/process/task_queues:76:11)
Emitted 'error' event on Function instance at:
    at C:\Users\gabri\Desktop\clipit\node_modules\mongoose\lib\model.js:4872:15
    at processTicksAndRejections (node:internal/process/task_queues:76:11) {
  code: 'ERR_HTTP_INVALID_STATUS_CODE'
}
PS C:\Users\gabri\Desktop\clipit>

Answer 1

您的控制台中出现 1 个错误和 1 个警告：

警告：express deprecated res.redirect(url, status): Use res.redirect(status, url) instead server.js:185:17. 这是关于参数的顺序。现在他们可以按任何顺序工作。但这也会提示您导致错误的原因。 res.redirect() 的参数应该是 status 和 url.

您不能将对象添加到参数中。它必须是 status code 和 path。您可能想要 res.render('/login-error', {curSession: req.session})（取决于您的观点）或只是 res.redirect('/login-error').

"Invalid status code" 当在数据库中找不到用户时

"Invalid status code" when the user is not found in the database

mongoose

mongodb

node.js

express

express-session