Hi All,

I have stumbled upon this article: http://today.java.net/pub/a/today/2006/02/09/file-uploads-with-ajax-and-jsf.html and I am trying to get this work with seam. The ProgressBar Component does not work. I think I know why, but I am not sure.

I noticed that the Author wrote inside his FileUploadRenderer Component

if(parameterMap.containsKey(PROGRESS_REQUEST_PARAM_NAME))
 {
 // This is a request to get the progress on the file request.
 // Get the progress and render it as XML

 HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();

 // set the header information for the response
 response.setContentType("text/xml");
 response.setHeader("Cache-Control", "no-cache");

 try
 {
 ResponseWriter writer = FacesUtils.setupResponseWriter(context);
 writer.startElement("progress", input);
 writer.startElement("percentage", input);
 // writer.writeText(result, null);
 // Get the current progress percentage from the session (as set
 // by the filter).
 Double progressCount = (Double) extContext.getSessionMap().get(
 "FileUpload.Progress." + input.getClientId(context));

 if(progressCount != null)
 {
 writer.writeText(progressCount, null);
 }
 else
 {
 // We havn't received the upload yet.
 writer.writeText("1", null);
 }

 writer.endElement("percentage");
 writer.startElement("clientId", input);
 writer.writeText(input.getClientId(context), null);
 writer.endElement("clientId");
 writer.endElement("progress");

 }
 catch (Exception e)
 {
 // Do some sot of error logging...
 throw new RuntimeException(e);
 }

 }
 else
 {
 // Normal decoding request.
 if(requestMap.get(clientId).toString().equals("file"))
 {
 try
 {
 HttpServletRequest request = (HttpServletRequest) extContext.getRequest();
 FileItem fileData = (FileItem) request.getAttribute(clientId);
 if(fileData != null)
 input.setSubmittedValue(fileData);

 // Now we need to clear any progress associated with this
 // item.
 extContext.getSessionMap()
 .put("FileUpload.Progress." + input.getClientId(context), new Double(100));

 }
 catch (Exception e)
 {
 throw new RuntimeException(
 "Could not handle file upload - please ensure that you have correctly configured the filter.",
 e);
 }
 }
 }
 }

It seems as if the author is trying to itercept the response sent back to the client, by sending a response.setContentType("text/xml");. Is this really possible?

I rather think, that this has to go inside a PhaseListener, and output the XML from there, or am I wrong?

Any Help is highly appreciated

Kind regards

Juergen