我正在嘗試使用Facebook Graph API從Windows Phone Silverlight應用程序上傳照片到Facebook,但出現錯誤:(#324)需要上傳文件。任何人都可以在我的代碼中看到任何錯C#中的Facebook照片上傳?
internal void PublishPhoto(System.IO.MemoryStream stream, string message, string accessToken)
{
var requestUriString = string.Format(
CultureInfo.InvariantCulture,
"https://graph.facebook.com/{0}/photos?access_token={1}&message={2}",
"me",
accessToken,
message);
var webRequest = WebRequest.CreateHttp(requestUriString);
webRequest.Method = "POST";
var boundary = "7db3d9202a1";
webRequest.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
webRequest.BeginGetRequestStream(new AsyncCallback(delegate (IAsyncResult result)
{
GetRequestStream(stream, boundary, result);
BeginGetResponse(webRequest);
}), webRequest);
}
private static void GetRequestStream(System.IO.MemoryStream imageStream, string boundary, IAsyncResult result)
{
var webRequest2 = result.AsyncState as HttpWebRequest;
using (var requestStream = webRequest2.EndGetRequestStream(result))
{
using (StreamWriter writer = new StreamWriter(requestStream))
{
writer.WriteLine("--{0}\r", boundary);
writer.WriteLine("Content-Disposition: form-data; filename=\"sketch.jpg\"\r");
writer.WriteLine("Content-Type: image/jpg\r");
byte[] buffer = imageStream.GetBuffer();
requestStream.Write(buffer, 0, buffer.Length);
writer.WriteLine("\r");
writer.WriteLine("--{0}--\r", boundary);
}
imageStream.Close();
}
}
private static void BeginGetResponse(HttpWebRequest webRequest)
{
webRequest.BeginGetResponse(new AsyncCallback(delegate(IAsyncResult result2)
{
var webRequest2 = result2.AsyncState as HttpWebRequest;
try
{
using (var response = webRequest2.EndGetResponse(result2))
{
using (var responseStream = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(responseStream))
{
System.Diagnostics.Debug.WriteLine(reader.ReadToEnd());
}
}
}
}
catch (WebException we)
{
System.Diagnostics.Debug.WriteLine(we.Message);
using (var responseStream = we.Response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(responseStream))
{
var errorJson = reader.ReadToEnd();
var response = Newtonsoft.Json.JsonConvert.DeserializeObject<FacebookErrorResponse>(errorJson);
System.Diagnostics.Debug.WriteLine("Could not upload image to Facebook: {0}", response.Error.Message);
}
}
}
}), webRequest);
}
}
感謝您的建議。我只是試了一下,但得到了同樣的結果。 –
你的界限也是錯誤的。除了最後一個以外,其他都應該使用格式「 - {0} \ r」'而不是「{0} \ n」';最後應該是'「 - {0} - \ r」'。 – Anomie
邊界字符串aleady具有連字符:var boundary =「--------------------------- 7db3d9202a1」;我可以修復最後一個,然後重試。 –