找不到如何使用HttpContent

Question

我正在尝试使用HttpContent:

HttpContent myContent = HttpContent.Create(SOME_JSON);

...但我没有运气找到定义它的DLL.

首先,我尝试添加引用Microsoft.Http以及System.Net,但是列表中都没有.我也尝试添加一个引用,System.Net.Http但HttpContent该类不可用.

那么,谁能告诉我在哪里可以找到这门HttpContent课程？

Answer 1

只是用......

var stringContent = new StringContent(jObject.ToString());
var response = await httpClient.PostAsync("http://www.sample.com/write", stringContent);

要么,

var stringContent = new StringContent(JsonConvert.SerializeObject(model), Encoding.UTF8, "application/json");
var response = await httpClient.PostAsync("http://www.sample.com/write", stringContent);

Answer 2

要获取6footunder的注释并将其转换为答案,这HttpContent是抽象的,因此您需要使用其中一个派生类:

Answer 3

对于JSON Post:

var stringContent = new StringContent(json, Encoding.UTF8, "application/json");
var response = await httpClient.PostAsync("http://www.sample.com/write", stringContent);

非JSON:

var stringContent = new FormUrlEncodedContent(new[]
{
    new KeyValuePair<string, string>("field1", "value1"),
    new KeyValuePair<string, string>("field2", "value2"),
});
var response = await httpClient.PostAsync("http://www.sample.com/write", stringContent);

https://blog.pedrofelix.org/2012/01/16/the-new-system-net-http-classes-message-content/

Answer 4

虽然HttpContent的最终版本和整个System.Net.Http命名空间将随.NET 4.5一起提供,但您可以通过添加NuGet 的Microsoft.Net.Http包来使用.NET 4版本