Question

我遇到一些错误，但我不知道这是什么意思，请问？这是错误：我不知道发生了什么，因为我之前从未遇到过这样的错误，而且我使用res.redirect的方式与以往一样。我发现您应该使用res。呈现，但是我想重定向到页面而不呈现页面...

> Sun, 10 Feb 2019 18:47:15 GMT express deprecated res.redirect(url,
> status): Use res.redirect(status, url) instead at
> routes\placeorder.js:50:17 RangeError [ERR_HTTP_INVALID_STATUS_CODE]:
> Invalid status code: [object Object]
>     at ServerResponse.writeHead (_http_server.js:208:11)
>     at ServerResponse.writeHead (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\on-headers\index.js:55:19)
>     at ServerResponse.writeHead (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\on-headers\index.js:55:19)
>     at ServerResponse._implicitHeader (_http_server.js:199:8)
>     at write_ (_http_outgoing.js:585:9)
>     at ServerResponse.write (_http_outgoing.js:567:10)
>     at writetop (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\express-session\index.js:290:26)
>     at ServerResponse.end (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\express-session\index.js:351:16)
>     at ServerResponse.redirect (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\express\lib\response.js:947:10)
>     at putOrderToDBAndRedirect (C:\Users\Petr\WebstormProjects\BakalarskaPrace\routes\placeorder.js:50:17)
> _http_server.js:208
>     throw new ERR_HTTP_INVALID_STATUS_CODE(originalStatusCode);
>     ^
> 
> RangeError [ERR_HTTP_INVALID_STATUS_CODE]: Invalid status code:
> [object Object]
>     at ServerResponse.writeHead (_http_server.js:208:11)
>     at ServerResponse.writeHead (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\on-headers\index.js:55:19)
>     at ServerResponse.writeHead (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\on-headers\index.js:55:19)
>     at ServerResponse._implicitHeader (_http_server.js:199:8)
>     at write_ (_http_outgoing.js:585:9)
>     at ServerResponse.end (_http_outgoing.js:709:5)
>     at writeend (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\express-session\index.js:261:22)
>     at Immediate.ontouch (C:\Users\Petr\WebstormProjects\BakalarskaPrace\node_modules\express-session\index.js:348:11)
>     at processImmediate (timers.js:632:19)
> 
> Process finished with exit code 1


const putOrderToDBAndRedirect = async(res,userId,serviceObj,
                                      ordStart,ordEnd) =>{
    try{
        const result = await pool.query('SELECT id ' +
                                            'FROM orders ' +
                                            'WHERE ($1,$2) OVERLAPS (ord_start,ord_end)',
                                            [ordStart,ordEnd]);
        if(isOverlaping(result)){
            console.log('redirect to page with orders');
            res.redirect('/objednat')
        }else{
            await pool.query('INSERT INTO orders (ord_entered,ord_start,user_id,service_id,ord_end)' +
                                ' VALUES($1,$2,$3,$4,$5)',
                                [new Date(),ordStart,userId,serviceObj.id,ordEnd]);
            const resultArr = await pool.query('SELECT firstname,lastname,phonenumber ' +
                                            'FROM users ' +
                                            'WHERE ' +
                                            'id = $1',[userId]);

            console.log(resultArr.rows[0]);
            const obj = constructOrderObj(serviceObj,ordStart,resultArr.rows[0]);
            res.redirect('/objednano',{orderObj:obj});
        }
    }catch(err){
        console.error(err);
    }

};

Answer 1

您正在呼叫res.redirect('/objednano',{orderObj:obj});，但与the function signature for res.redirect()不匹配，后者以可选状态作为第一个参数，并以路径作为第二个参数（如果只有，则将路径作为第一个参数）一个参数，在这种情况下，状态默认为302。

说实话，我不清楚您要在这里做什么。但这是问题所在。它将第一个参数视为状态代码，而'/objednano'显然是无效的HTTP状态。因此，错误消息抱怨HTTP状态无效。

Answer 2

如果您使用res.redirect将响应发送给客户端，则其状态代码为 302 （基本上是重定向），表示当前数据您需要的信息在当前位置不可用，但在重定向的另一个位置

如果您尝试从前端应用程序或客户端获取此资源（例如使用fetch或XMLHTTPresponse，那么您可能会收到这样的错误）

最好的方法是显式告诉express（或response对象）您正在尝试为此请求

发送json响应

如何修复Node中的“ ERROR _HTTP_INVALID_STATUS_CODE”？

2 个答案: