我的Windows Phone应用获取空响应(404 Not Found)第二次,第一次工作很棒;如果没有SSL,总是工作正常

Question

我正在构建我的第一个windowsPhone 8.1应用程序,我的应用程序的作用是创建与服务器的连接以从中获取信息,所以我编写代码来执行此过程通过向服务器发送json-rpc请求来获取一些信息,我我是第一次成功获得它但是当我发送第二个请求时,我收到一个404错误的空响应(找不到页面).但是当我在没有https(仅限http)的情况下调用该服务时,无论我多少次调用它,它都能正常工作!

   public async Task<string> GetDataFromServer(string urlToCall, string JSONData,string RR)
        {
            string UserName = “XXXXXXX”
            string Password = "XXX";

            using ( var handler = new HttpClientHandler())
            {
                handler.Credentials = new NetworkCredential(UserName, Password);
                HttpClient client = new HttpClient(handler);

                HttpResponseMessage response = null;

            try
            {


                response = await client.PostAsync(urlToCall, new StringContent(JSONData.ToString(), Encoding.UTF8, " application/json"));
               string res = response.Content.ReadAsStringAsync().Result;




                Windows.UI.Popups.MessageDialog g = new Windows.UI.Popups.MessageDialog(res);
                await g.ShowAsync();
                return res;

            }
            catch (Exception ex)
            {


                Windows.UI.Popups.MessageDialog g = new Windows.UI.Popups.MessageDialog("Error is : " + ex.Message);
               g.ShowAsync();
               return "Error";
            }
            finally
            {
                response.Dispose();
                client.CancelPendingRequests();
                client.Dispose();
                handler.Dispose();
            }
            }

        }

再次,当第一次调用服务的URL(以https开头)时,我得到了搜索数据的响应,但第二次收到404错误的空响应(找不到页面)!! 请帮忙

Answer 1

请尝试使用此解决方案。

        public async Task<string> SendJSONData3(string urlToCall, string JSONData)
    {
        string UserName = "XXXXXXXXX";
        string Password = "XXXXXXXXX";
        var httpWebRequest = (HttpWebRequest)WebRequest.Create(urlToCall);
        httpWebRequest.Credentials = new NetworkCredential(UserName, Password);
        httpWebRequest.ContentType = "text/json";
        httpWebRequest.Method = "POST";
        using (var streamWriter = new StreamWriter(await httpWebRequest.GetRequestStreamAsync()))
        {
            string json = JSONData;
            streamWriter.Write(json);
            streamWriter.Flush();
        }
        var httpResponse = (HttpWebResponse)await httpWebRequest.GetResponseAsync();
        using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
        {
            var result = streamReader.ReadToEnd();
            return result;
        }

    }