c# Http请求封装工具类

  public class HttpHelper
  {
      /// <summary>
      /// Get the content of a file from the specified URL.
      /// </summary>
      /// <param name="url">The URL to request.</param>
      /// <param name="method">The HTTP request method.</param>
      /// <param name="postData">The data for POST requests (optional).</param>
      /// <returns>The content of the file.</returns>
      public static async Task<string> GetFileContent(string url, HttpMethod method, string postData = null)
      {
          using (HttpClient client = new HttpClient())
          {
              HttpRequestMessage request = new HttpRequestMessage(method, url);
              if (method == HttpMethod.Post && !string.IsNullOrEmpty(postData))
              {
                  request.Content = new StringContent(postData);
              }

              HttpResponseMessage response = await client.SendAsync(request);
              if (response.IsSuccessStatusCode)
              {
                  return await response.Content.ReadAsStringAsync();
              }
              else
              {
                  Console.WriteLine($"Request failed: {response.StatusCode}");
                  return null;
              }
          }
      }

      /// <summary>
      /// Make an HTTP request.
      /// </summary>
      /// <param name="baseUrl">The target URL.</param>
      /// <param name="method">The request method.</param>
      /// <param name="requestBody">The request body parameters.</param>
      /// <returns></returns>
      public static string HttpRequest(string baseUrl, Method method, RestRequest requestBody)
      {
          try
          {
              var client = new RestClient(baseUrl);

              requestBody.Method = method;
              var response = client.Execute(requestBody);
              if (response.StatusCode == HttpStatusCode.OK)
              {
                  return response.Content;
              }

              throw new Exception("HTTP request result error: " + response.ErrorMessage);
          }
          catch (Exception ex)
          {
              throw new Exception("HTTP request failed: " + ex.Message);
          }
      }
  }

请注意，当 response.StatusCode 状态不是ok时，我会抛出异常。如果不符合业务，请自行修改。

源码地址：https://github.com/yycb1994/DotNet.Working.Notes/tree/main/Working.Notes/Working.Tools