在C＃中检索Http客户端的POST请求正文

Question

有什么方法可以在C＃中检索Http Client的POST请求正文？ 我只想检查我的UT是否将我的扩展方法正确地添加到请求中。 此功能对此没有任何公正性。

public static async Task<string> AddPostRequestBody<T>(this HttpClient httpclient, string RequestUrl, T classobject)
    {
        string json_body = Newtonsoft.Json.JsonConvert.SerializeObject(classobject);
        HttpRequestMessage RequestMessage = new HttpRequestMessage(HttpMethod.Post, RequestUrl);
        HttpResponseMessage response = await httpclient.PostAsync(RequestUrl, new StringContent(json_body));
        response = httpclient.SendAsync(RequestMessage).Result;
        string outputresult = await response.RequestMessage.Content.ReadAsStringAsync();
        return outputresult;
    }

请帮忙 ！

Answer 1

尝试使用DelegatingHandler（我在实现HMAC时用来对内容进行哈希处理并添加必要的授权标头），这将使您能够访问内容。

CustomDelegatingHandler customDelegatingHandler = new CustomDelegatingHandler();
HttpClient client = HttpClientFactory.Create(customDelegatingHandler);

public class CustomDelegatingHandler : DelegatingHandler
{
    protected async override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    {
        if (request.Content != null)
        {
            byte[] content = await request.Content.ReadAsByteArrayAsync();
            // Do what you need with the content here
        }

        response = await base.SendAsync(request, cancellationToken);
        return response;
    }
}

Answer 2

好的，所以我可以使用它而不是创建响应，而是直接附加到请求消息并从中检索。 很简单，但最初在发布的问题中，我通过在响应中添加json字符串使其变得复杂。

public static string AddPostRequestBody<T>(this HttpClient httpclient, string requestUrl, T classObject)
    {
        string jsonBody = Newtonsoft.Json.JsonConvert.SerializeObject(classObject);
        HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, requestUrl);
        requestMessage.Content = new StringContent(jsonBody);
        string requestBody = requestMessage.Content.ReadAsStringAsync().Result;
        return requestBody;           
    }