我想從Silverlight 4發佈圖像到wcf休息服務，但我得到一個異常，當我從請求中反應，例外是System.Net.WebException：遠程服務器返回錯誤：NotFound。 ---> silverlight文件發佈到WCF休息服務
系統.Net.WebException：遠程服務器返回錯誤：NotFound。 ---> System.Net.WebException：遠程服務器返回一個錯誤：NotFound。 at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse（IAsyncResult asyncResult） at System.Net.Browser.BrowserHttpWebRequest。 <> c_ DisplayClassa.b _9（Object sendState） at System.Net.Browser.AsyncHelper。 <> C_ DisplayClass4.b _1（對象sendState）內部異常堆棧跟蹤的 --- ---結束在 System.Net.Browser.AsyncHelper.BeginOnUI（SendOrPostCallback beginMethod，對象狀態） 在System.Net。 Browser.BrowserHttpWebRequest.EndGetResponse（IAsyncResult的asyncResult） 在Admin.Popups.AddCategory.OnImageGetResponseCompleted（IAsyncResult的AR）}
我所有的其他功能的服務工作正常，即使這一次當我嘗試從Android的訪問，我已經看過，並嘗試了silverlight跨域政策，但我不認爲它適用，我的代碼是低於
private void UpLoadImage()
{
string URL = Utilities.GetServiceUrl() + "AddCategoryImage?CategoryId=2&ContentType=image&apikey=" + Utilities.GetApiKey();
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);
request.Method = "POST";
request.ContentType = "text/plain";
request.ContentLength = SelectedFile.Length;
request.BeginGetRequestStream(OnImageGetRequestStreamCompleted, request);
}
private void OnImageGetRequestStreamCompleted(IAsyncResult ar)
{
try
{
if (SelectedFile != null)
{
HttpWebRequest request = (HttpWebRequest)ar.AsyncState;
using (Stream postStream = request.EndGetRequestStream(ar))
{
using (Stream source = SelectedFile.OpenRead())
{
byte[] buffer = new byte[2048];
int bytesRead;
while ((bytesRead = source.Read(buffer, 0, buffer.Length)) > 0)
{
postStream.Write(buffer, 0, bytesRead);
}
}
}
request.BeginGetResponse(new AsyncCallback(OnImageGetResponseCompleted), request);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void OnImageGetResponseCompleted(IAsyncResult ar)
{
try
{
HttpWebRequest request = (HttpWebRequest)ar.AsyncState;
HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(ar);
using (StreamReader sr = new StreamReader(response.GetResponseStream()))
{
string result = sr.ReadToEnd();
}
}
catch (Exception ex)
{
this.Dispatcher.BeginInvoke(delegate()
{
MessageBox.Show(ex.Message);
});
}
}
WCF的功能是
[OperationContract]
[WebInvoke(Method = "POST", UriTemplate = "AddCategoryImage?CategoryId={CategoryId}&ContentType={ContentType}", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]
bool AddCategoryImage(int CategoryId, string ContentType, Stream Image);
和功能的實現是
public static bool AddCategoryImage(int CategoryId, string ContentType,Stream Image)
{
SqlConnection sqlCon = new SqlConnection(Params.GetConnectionString());
SqlCommand sqlCmd = new SqlCommand("UPDATE Categories SET Cat_Img = @Cat_Img,Cat_Img_Type = @Cat_Img_Type WHERE Cat_ID = @Cat_ID", sqlCon);
sqlCmd.Parameters.Add("@Cat_Img", SqlDbType.Image).Value = Utility.ConvertStreamToByteArray(Image);
sqlCmd.Parameters.Add("@Cat_Img_Type", SqlDbType.NVarChar, 32).Value = ContentType;
sqlCmd.Parameters.Add("@Cat_ID", SqlDbType.Int).Value = CategoryId;
try
{
sqlCon.Open();
return sqlCmd.ExecuteNonQuery() > 0 ? true : false;
}
catch (Exception ex)
{
Error.CreateError(ex.Message, "Category.cs", "AddCategoryImg(int,string,Stream)");
}
finally
{
sqlCon.Close();
}
return false;
}