Question

我最近一直坚持这一点，无法弄清楚为什么会这样。

我在.Net Core中使用MVC控制器返回NotFound（）“404”响应。但是，客户端（使用angular）如果我在console.log中响应，则显示此...

状态：200个
状态文本： “OK”

有没有理由为什么返回NotFound（）会返回错误代码200而不是预期的404？

这是我的控制器GET。

 // GET: api/cause/cause-name
    [HttpGet("{name}")]
    [AllowAnonymous]
    public IActionResult GetCauseByName(string name)
    {
        var input =  _service.GetCauseByName(name);

        if (input == null)
        {
            return NotFound();
        }
        else
        {
            return Ok(input);
        }
    }

任何帮助将不胜感激！谢谢！

要清楚，对于此实例，假设输入为空。我正在测试的是它击中NotFound（）而不是返回OK（输入）。断点已经设置，它确实命中了NotFound（），但仍然返回200的响应代码。

标题 -

GET /cause/dsdasdas 
HTTP/1.1 
Host: localhost:48373 
Connection: keep-alive 
Upgrade-Insecure-Requests: 1 
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/‌webp,/;q=0.8 Accept-Encoding: gzip, deflate, sdch, br Accept-Language: en-US,en;q=0.8

HTTP/1.1 
200 OK 
Transfer-Encoding: chunked 
Content-Type: text/html; charset=utf-8 
Content-Encoding: gzip Vary: 
Accept-Encoding Server: Kestrel X-SourceFiles: =?UTF-8?B?QzpcVXNlcnNcaXR0ZW1wNVxEZXNrdG9wXFByb2plY3RGdW5kQX‌BwXHNyY1xQcm9qZWN0Rn‌VuZFxjYXVzZVxkc2Rhc2‌Rhcw==?= X-Powered-By: ASP.NET Date: Thu, 25 May 2017 14:51:29 GMT –

POSTMAN HEADERS

Content-Encoding →gzip
Content-Type →text/html; charset=utf-8
Date →Thu, 25 May 2017 15:18:31 GMT
Server →Kestrel
Transfer-Encoding →chunked
Vary →Accept-Encoding
X-Powered-By →ASP.NET
X-SourceFiles →=?UTF-8?B?QzpcVXNlcnNcaXR0ZW1wNVxEZXNrdG9wXFByb2plY3RGdW5kQXBwXHNyY1xQcm9qZWN0RnVuZFxjYXVzZVxkc2Rhc2Rhcw==?=

Answer 1

我问了类似的问题并收到了某种答案... NotFound() doesn't seem to work as expected

解决方案Redirect("~/404.html");返回200。

但是，还有另一种方式。

// Wherever you want to return your standard 404 page
return Redirect("Home/StatusCode?code=404");


public class HomeController : Controller
{
    // This method allows for other status codes as well
    public IActionResult StatusCode(int? code)
    {
        // This method is invoked by Startup.cs >>> app.UseStatusCodePagesWithReExecute("/Home/StatusCode", "?code={0}");
        if (code.HasValue)
        {
            // here is the trick
            this.HttpContext.Response.StatusCode = code.Value;
        }

        //return a static file.
        try
        {
            return File("~/" + code + ".html", "text/html");
        }
        catch (FileNotFoundException)
        {
            return Redirect("Home/StatusCode?code=404");
        }
    }
}

这确实返回404。

NotFound（）返回200而不是404

1 个答案: