JSF: Error Message are not getting cleared

Question

Hi,
I am facing some problem with error messages in JSF.
Here is what I am doing
1. User submits a form, server validates and sends back the error to the client error message added to Faces Context.
2. User checks the messages, changes the input and submits. assuming everything is correct now.
3. On server, it validates and writes data to response for download using the following code.
FacesContext faces = FacesContext.getCurrentInstance();
    HttpServletResponse response = (HttpServletResponse)faces.getExternalContext().getResponse();
    DownloadResponse.sendDownload( response, is, fileName );
    faces.responseComplete();
  }4. It shows the download popup to download the file. The problem here is that error message are not getting cleared off. User can still see the error message on the screen.
It seems I am missing something in JSF req-response life cycle. Anyone please point out the mistake.

Answer 1

SudhirMongia wrote:
4. It shows the download popup to download the file. The problem here is that error message are not getting cleared off. User can still see the error message on the screen. Wrong. The problem is that the view is not rerendered, which makes sense because you are not sending view content to the browser but your file.
Your real question probably is: how do I cause a file download and still rerender the view afterwards to show the results? To that I myself do not have the answer unfortunately, but I have seen that question come by a few times already, so doing some searches in these forums may yield you an answer.