如何在Web API中抛出异常？ [英] How to throw exception in Web API?

问题描述

以下是我的代码：

  public Test GetTestId（string id）
 {
测试测试= _test.GetTest（id）; 
 
 if（test == null）
 {
 throw new HttpResponseException（HttpStatusCode.NotFound）; 
} 
 
返回测试; 
} 
  

我不认为我做正确的事情，我的客户端知道这是一个 HTTP 404 错误？

解决方案

完全正确。

或者，如果您希望提供更多信息（允许，如您所说，客户端与常规404区分开）：

  if（test == null）
 {
 throw new HttpResponseException（Request.CreateErrorResponse（HttpStatusCode.NotFound，
this item不存在））; 
} 
  

How can I throw a exception to in ASP.net Web Api?

Below is my code:

public Test GetTestId(string id)
{
    Test test = _test.GetTest(id);

    if (test == null)
    {
        throw new HttpResponseException(HttpStatusCode.NotFound);
    }

    return test;
}

I don't think I am doing the right thing, How do my client know it is a HTTP 404 error?

解决方案

It's absolutely fine.

Alternatively, if you wish to provide more info (to allow, as you say, the client to distinguish from regular 404):

    if (test == null)
    {
         throw new HttpResponseException(Request.CreateErrorResponse(HttpStatusCode.NotFound, 
"this item does not exist"));
    }

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