如何在 .net 应用程序中解决此错误

Question

这是我的错误

SocketException：无法建立连接，因为目标机器主动拒绝。

我通过这个代码得到它

public class AppService : IAppService
{
    public async Task<MainResponse> AuthenticateUser(LoginModel loginModel)
    {
        var returnResponse = new MainResponse();

        using (var client = new HttpClient())
        {
            var url = $"{Setting.BaseUrl}{UserAPIs.AuthenticateUser}";

            var serializedStr = JsonConvert.SerializeObject(loginModel);

            var response = await client.PostAsync(url, new StringContent(serializedStr, Encoding.UTF8, "application/json"));

            if (response.IsSuccessStatusCode)
            {
                string contentStr = await response.Content.ReadAsStringAsync();
                returnResponse = JsonConvert.DeserializeObject<MainResponse>(contentStr);
            }
        }

        return returnResponse;
    }
}

我需要程序来登录用户并显示索引页面

Answer 1

试试这些..

1. 确保 API 已启动。

2. 检查网址

3. 在代码中添加异常处理

   公共异步任务AuthenticateUser(LoginModel loginModel) { var returnResponse = new MainResponse();

   try
   {
       using (var client = new HttpClient())
       {
           var url = $"{Setting.BaseUrl}{UserAPIs.AuthenticateUser}";
   
           var serializedStr = JsonConvert.SerializeObject(loginModel);
   
           var response = await client.PostAsync(url, new StringContent(serializedStr, Encoding.UTF8, "application/json"));
   
           if (response.IsSuccessStatusCode)
           {
               string contentStr = await response.Content.ReadAsStringAsync();
               returnResponse = JsonConvert.DeserializeObject<MainResponse>(contentStr);
           }
       }
   }
   catch (Exception ex)
   {
       // Log or display the exception details for troubleshooting.
       Console.WriteLine($"Error: {ex.Message}");
       // You can also throw the exception if needed.
       // throw;
   }
   
   return returnResponse;
   

   }