检查是否HttpStatusCode代表成功或失败 [英] Checking if HttpStatusCode represents success or failure

问题描述

让我们假设我有以下变化：

  System.Net.HttpStatusCode状态= System.Net.HttpStatusCode.OK; 
  

我如何检查，如果这是一个成功的状态码还是失败的？

比如说，我可以做到以下几点：

  INT码=（INT）状态; 
如果（代码> = 200安培;&放大器;代码< 300）{
 //成功
} 
  

我也可以有某种白名单：

  HttpStatusCode [] successStatus =新HttpStatusCode [] {
 HttpStatusCode.OK，
 HttpStatusCode.Created，
 HttpStatusCode.Accepted，
 HttpStatusCode.NonAuthoritativeInformation，
 HttpStatusCode.NoContent，
 HttpStatusCode.ResetContent，
 HttpStatusCode.PartialContent 
}; 
如果（successStatus.Contains（状态））// LINQ 
 {
 //成功
} 
  

这些方案都没有说服我，我希望的是能为我做这项工作的.NET类或方法，如：

 布尔isSuccess = HttpUtilities.IsSuccess（状态）; 
  

解决方案

如果您使用的 HttpClient的类，那么你会得到一个的 HttpResponseMessage 回来。

本类有一个叫有用的属性 IsSuccessStatusCode 会为你做检查。

 使用（VAR客户端=新的HttpClient（））
 {
 VAR响应=等待client.PostAsync（URI，内容）; 
如果（response.IsSuccessStatusCode）
 {
 // ... 
} 
} 
  

在情况下，你很好奇，这个属性是实现为

 公共BOOL IsSuccessStatusCode 
 {
 {返回（（INT）的StatusCode> = 200） &功放;&安培; （（INT）的StatusCode< = 299）; } 
} 
  

所以，你如果你的可以只重用此算法不的使用的HttpClient 直接

您也可以使用 EnsureSuccessStatusCode 抛出一个异常的情况下的反应却并不成功。

Let's suppose I have the following variable:

System.Net.HttpStatusCode status = System.Net.HttpStatusCode.OK;

How can I check if this is a success status code or a failure one?

For instance, I can do the following:

int code = (int)status;
if(code >= 200 && code < 300) {
    //Success
}

I can also have some kind of white list:

HttpStatusCode[] successStatus = new HttpStatusCode[] {
     HttpStatusCode.OK,
     HttpStatusCode.Created,
     HttpStatusCode.Accepted,
     HttpStatusCode.NonAuthoritativeInformation,
     HttpStatusCode.NoContent,
     HttpStatusCode.ResetContent,
     HttpStatusCode.PartialContent
};
if(successStatus.Contains(status)) //LINQ
{
    //Success
}

None of these alternatives convinces me, and I was hoping for a .NET class or method that can do this work for me, such as:

bool isSuccess = HttpUtilities.IsSuccess(status);

解决方案

If you're using the HttpClient class, then you'll get a HttpResponseMessage back.

This class has a useful property called IsSuccessStatusCode that will do the check for you.

using (var client = new HttpClient())
{
    var response = await client.PostAsync(uri, content);
    if (response.IsSuccessStatusCode)
    {
        //...
    }
}

In case you're curious, this property is implemented as:

public bool IsSuccessStatusCode
{
    get { return ((int)statusCode >= 200) && ((int)statusCode <= 299); }
}

So you can just reuse this algorithm if you're not using HttpClient directly.

You can also use EnsureSuccessStatusCode to throw an exception in case the response was not successful.

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