problem while downloading file in struts

[ramnna jain]

I am facing problem while downloading file.

I am using java 6, tomcat 5.5, Struts 1.3.

I save file in "WEB-INF/activity_files/activity1" location. All file types get saved.

Here I am stating the problem and then the code I am using to download:

Problem: When I click on download link, I get the file download window with some weird file name with right file type icon on it and when I save..., some raw type file is saved.
The file saved is of correct size but the name is not the same and the file is not associated with any file type.

This is first time I am implementing file download.... I need help to diagnose and find solution. I appreciate any help.

public class DownloadFileAction extends DownloadAction{

	protected StreamInfo getStreamInfo(ActionMapping mapping, ActionForm form,
							     HttpServletRequest request, HttpServletResponse response)
							     throws Exception
	{
		
		... some code ...

		
		String contentType = fileInfo.getContentType();
		
		
		String theFile = getServlet().getServletContext().getRealPath("WEB-INF/activity_files/activity1")+"\\"+CommonConstant.ACTIVITY1A"+"\\"+fileInfo.getFileName();
		
		response.setHeader("Content-disposition", "attachment; filename=" + theFile);

		
		File file = new File(theFile);
		
		
		return new FileStreamInfo(contentType, file);
	}

}