About Tapestry HttpServletRequest

[sohu]

I met a problem.
I upload files from a page. In the tranditional servlet, all things are right. 
The code is :

public void doPost(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  DiskFileItemFactory factory = new DiskFileItemFactory();
  // set cache
  factory.setSizeThreshold(10240000);
  // set temp 
  String base = "d:/upload";
  File file = new File(base);
  if(!file.exists())
   file.mkdirs();
  factory.setRepository(file);
  ServletFileUpload upload = new ServletFileUpload(factory);
  // set the single max
  upload.setFileSizeMax(10002400000l);
  // set the whole max
  upload.setSizeMax(10002400000l);
  upload.setHeaderEncoding("UTF-8");
  
  try {
   List<?> items = upload.parseRequest(request);
   FileItem item = null;
   String fileName = null;
   for (int i = 0 ;i < items.size(); i++){
    item = (FileItem) items.get(i);
    fileName = base + File.separator + item.getName();
    // save file
    if (!item.isFormField() && item.getName().length() > 0) {
     item.write(new File(fileName));
    }
   }
  } catch (FileUploadException e) {
   e.printStackTrace();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }

but when I transfer these codes to a setupRender() of a tapestry page. After 
debug, I found that after it go to "List<?> items = 
upload.parseRequest(request); ", the varible items will be empty.
I use "HttpServletRequest request = requestGlobal.getHTTPServletRequest();" to 
get request object, it is not null.

any help?
2009-08-14 



Rockie C.