Question

我目前正在尝试通过我的网络服务上传图片。我有这段代码：

public async Task<Webservice> editProfile(List<KeyValuePair<string, string>> values, byte[] image)
        {
            String strUrl = String.Format("http://********/nl/webservice/abc123/members/update");
            var HttpClientUpload = new HttpClient();
            HttpMultipartFormDataContent requestUploadContent = new HttpMultipartFormDataContent();

           Stream streamImage = new System.IO.MemoryStream(image);
            HttpStreamContent streamContent = new HttpStreamContent(streamImage.AsInputStream());

            requestUploadContent.Add(streamContent, "myFile", "image.jpg");
            foreach (var keyValuePair in values)
            {
                requestUploadContent.Add(new HttpStringContent(keyValuePair.Value), keyValuePair.Key);
            }

            HttpResponseMessage responseLogin = await HttpClientUpload.PostAsync(new Uri(strUrl), requestUploadContent);
            responseLogin.EnsureSuccessStatusCode();
            if (responseLogin.StatusCode == Windows.Web.Http.HttpStatusCode.Ok && responseLogin.Content != null)
            {
                var data = new Webservice { Status = responseLogin.StatusCode };
                data.Data = await responseLogin.Content.ReadAsStringAsync();
                Debug.WriteLine(data.Data);
                return data;
            }
            return new Webservice { Status = new Windows.Web.Http.HttpStatusCode() };
        }

但我总是得到以下异常：'System.ExecutionEngineException'在以下一行：

 HttpStreamContent streamContent = new HttpStreamContent(streamImage.AsInputStream());

任何人都可以帮忙，现在几天都在努力解决这个问题......

提前致谢！

修改

我改变了我的功能：

public async Task<Webservice> editProfile(List<KeyValuePair<string, string>> values, byte[] image)
        {
            try
            {
                using (IsolatedStorageFile iso = IsolatedStorageFile.GetUserStoreForApplication())
                {
                    using (IsolatedStorageFileStream stream = iso.OpenFile("image.jpg", FileMode.Open, FileAccess.Read))
                    {
                        String strUrl = String.Format("http://membr.sanmax.be/nl/webservice/abc123/members/update");

                        HttpMultipartFormDataContent requestUploadContent = new HttpMultipartFormDataContent();

                        //Stream streamImage = new System.IO.MemoryStream(stream);
                        HttpStreamContent streamContent = new HttpStreamContent(stream.AsInputStream());

                        requestUploadContent.Add(streamContent, "picture", "photo.jpg");
                        foreach (var keyValuePair in values)
                        {
                            requestUploadContent.Add(new HttpStringContent(keyValuePair.Value), keyValuePair.Key);
                        }

                        HttpResponseMessage responseLogin = await httpClient.PostAsync(new Uri(strUrl), requestUploadContent);
                        responseLogin.EnsureSuccessStatusCode();
                        if (responseLogin.StatusCode == Windows.Web.Http.HttpStatusCode.Ok && responseLogin.Content != null)
                        {
                            var data = new Webservice { Status = responseLogin.StatusCode };
                            data.Data = await responseLogin.Content.ReadAsStringAsync();
                            Debug.WriteLine(data.Data);
                            return data;
                        }
                    }
                }     
            }
            catch (Exception e)
            {
                Debug.WriteLine(e);
            }

            return new Webservice { Status = new Windows.Web.Http.HttpStatusCode() };
        }

但是现在它在catch部分停止了这个例外：

WinRT information: Response status code does not indicate success: 413 (Request Entity Too Large).
System.Exception: Request entity too large (413).

HttpStreamContent抛出System.ExecutionEngineException

0 个答案: