[Struts Wiki] Update of "StrutsFileDownload" by NiallPemberton

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The following page has been changed by NiallPemberton:
http://wiki.apache.org/struts/StrutsFileDownload

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  == Content Disposition ==
  
  === Setting the Content Disposition ===
- DownloadAction doesn't cater for setting the content dispositon header. I guess at the moment the best way to do that would be override the execute() method and set it first, something like this...
+ DownloadAction doesn't cater for setting the content dispositon header. The easiest way is set it in the getStreamInfo() method, for example...
  
  {{{
  
  public class ExampleFileDownload extends DownloadAction{
- 
  
  
      protected StreamInfo getStreamInfo(ActionMapping mapping, 
@@ -204, +203 @@

                                         HttpServletRequest request, 
                                         HttpServletResponse response)
              throws Exception {
+ 
+         // File Name
+         String fileName = mapping.getParameter();
+ 
+         // Set the content disposition
+         response.setHeader("Content-disposition", 
+                            "attachment; filename=" + fileName);
          
          // Download a "pdf" file - gets the file name from the
          // Action Mapping's parameter
          String contentType = "application/pdf";
-         File file          = new File(mapping.getParameter());
+         File file          = new File(fileName);
  
          return new FileStreamInfo(contentType, file);
          
-     }
- 
-     public ActionForward execute(ActionMapping mapping,
-                                  ActionForm form,
-                                  HttpServletRequest request,
-                                  HttpServletResponse response)
-              throws Exception {
- 
-         response.setHeader("Content-disposition", 
-                            "attachment; filename=" + mapping.getParameter());
- 
-         return super.execute(mapping, form, request, response);
- 
      }
  }
  

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