如何从Httpclient.SendAsync调用获取和打印响应 [英] How to get and print response from Httpclient.SendAsync call
问题描述
我正在尝试从HTTP请求中获取响应,但是我似乎无法.我尝试了以下方法:
I'm trying to get a response from a HTTP request but i seem to be unable to. I have tried the following:
public Form1() {
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("someUrl");
string content = "someJsonString";
HttpRequestMessage sendRequest = new HttpRequestMessage(HttpMethod.Post, client.BaseAddress);
sendRequest.Content = new StringContent(content,
Encoding.UTF8,
"application/json");
通过以下方式发送消息:
Send message with:
...
client.SendAsync(sendRequest).ContinueWith(responseTask =>
{
Console.WriteLine("Response: {0}", responseTask.Result);
});
} // end public Form1()
使用此代码,我可以获取状态代码和一些标头信息,但不能获取响应本身.我也尝试过:
With this code, i get back the status code and some header info, but i do not get back the response itself. I have tried also:
HttpResponseMessage response = await client.SendAsync(sendRequest);
但是我被告知要创建一个如下所示的异步方法以使其工作
but I'm then told to create a async method like the following to make it work
private async Task<string> send(HttpClient client, HttpRequestMessage msg)
{
HttpResponseMessage response = await client.SendAsync(msg);
string rep = await response.Content.ReadAsStringAsync();
}
这是发送"HttpRequest",获取并打印响应的首选方法吗?我不确定哪种方法是正确的.
Is this the preferred way to send a 'HttpRequest', obtain and print the response? I'm unsure what method is the right one.
推荐答案
这是使用HttpClient
的方法,在请求返回状态为200的情况下,它应该读取请求的响应((请求不是) BadRequest
或NotAuthorized
)
here is a way to use HttpClient
, and this should read the response of the request, in case the request return status 200, (the request is not BadRequest
or NotAuthorized
)
string url = 'your url here';
using (HttpClient client = new HttpClient())
{
using (HttpResponseMessage response = client.GetAsync(url).Result)
{
using (HttpContent content = response.Content)
{
var json = content.ReadAsStringAsync().Result;
}
}
}
,有关完整详细信息,以及如何将async/await
与HttpClient
结合使用,您可以阅读此答案的详细信息
and for full details and to see how to use async/await
with HttpClient
you could read the details of this answer
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