<form enctype="multipart/form-data" action="f_upload" method='post'>
<table>
  <tr>
    <td>Выбрать файл:</td>
    <td>
      <input type='file' name="UPLOAD_FILE_FORM_NAME"/>
    </td></tr>
    <tr>
    <td>
      <input type='submit' value="Загрузить"/>
    </td>
  </tr>
</table>
</form>

   public   void  doPost(HttpServletRequest request, HttpServletResponse response)
          throws  ServletException, IOException {
     PrintWriter out = response.getWriter();     
     DiskFileUpload upload =  new  DiskFileUpload();
      try {
       List items = upload.parseRequest(request);
       Iterator iter = items.iterator();
        while  (iter.hasNext()){
         FileItem item = (FileItem)iter.next();
          if (item.isFormField()) {
           out.println("its a field");
         }
          else {
           out.println("its a file");
           out.println(item.getName());
           File cfile =  new  File(item.getName());
           File tosave =  new  File("ftp://192.168.3.11/upload/", cfile.getName());
           item.write(tosave);
         }
       }
     } catch  (Exception e){out.println(e.toString());}
     out.close();
  }

}