.NET 4.5 和 C# 中带有 HttpClient 的 HTTP HEAD 请求 [英] HTTP HEAD request with HttpClient in .NET 4.5 and C#

问题描述

是否可以在 .NET 4.5 中使用新的 HttpClient 创建 HTTP HEAD 请求?我能找到的唯一方法是 GetAsync、DeleteAsync、PutAsync 和 PostAsync.我知道 HttpWebRequest 类能够做到这一点，但我想使用现代的 HttpClient.

Is it possible to create a HTTP HEAD request with the new HttpClient in .NET 4.5? The only methods I can find are GetAsync, DeleteAsync, PutAsync and PostAsync. I know that the HttpWebRequest-class is able to do that, but I want to use the modern HttpClient.

推荐答案

将 SendAsync 方法与使用 HttpMethod.Head 构造的 HttpRequestMessage 实例一起使用 .

Use the SendAsync method with an instance of HttpRequestMessage that was constructed using HttpMethod.Head .

GetAsync、PostAsync 等是 方便的包装器围绕SendAsync；不太常见的 HTTP 方法，例如 HEAD、OPTIONS 等，没有包装器.

GetAsync, PostAsync, etc are convenient wrappers around SendAsync; the less common HTTP methods such as HEAD, OPTIONS, etc, don't get a wrapper.

简而言之:

client.SendAsync(new HttpRequestMessage(HttpMethod.Head, url))

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