使用 ASP Dot net MVC 使用外部 Restful Web API

Question

我正在做一个简单的页面来上传文档。 但是，在我获得输入后，我需要调用一个 Web API 来获取一个令牌，然后这将允许我调用另一个 Web API，该 API 最终将继续上传文件（使用文件和令牌）。 所以我想知道的是如何调用这个 API 并检索它的响应，然后添加该响应（这将是令牌）。 我正在尝试以下代码，它在控制台应用程序中运行良好，但在 Web 应用程序中不起作用。 这是我的代码

public void GetTokenpost()
{
    ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
    string url = "mydomain/api/oauth/token";
    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
    request.Method = "POST";

    string data = "grant_type=urn:ietf:params:oauth:grant-type:jwt-bearer&assertion=here jwt token"; // make sure this is URL encoded
    request.ContentType = "application/json";
    using (var streamWriter = new StreamWriter(request.GetRequestStream()))
    {
       streamWriter.Write(data);
       streamWriter.Flush();
       streamWriter.Close();
       var HttpResponse = (HttpWebResponse)request.GetResponse();
       using (var streamRead = new StreamReader(HttpResponse.GetResponseStream()))
         {
            var value1 = streamRead.ReadToEnd();       
            Console.WriteLine("Hello {0}", 
         }
    }
 }

Answer 1

using (var client = new HttpClient())  
          {  
              client.BaseAddress = new Uri("http://domain");  

              //Called Member default GET All records  
              //GetAsync to send a GET request   
              // PutAsync to send a PUT request  
              var responseTask = client.GetAsync(string requestUri);  
              responseTask.Wait();  

              //To store result of web api response.   
              var result = responseTask.Result;  

              //If success received   
              if (result.IsSuccessStatusCode)  
              { 
               //your code for performing action
              }