rich:fileupload problem with filter

hi i have a problem with rich fileupload , i have a website with some discussion group with restricted access.

for allow that i use a filter that scan the request and redirect you if you have no access. the problem is using rich:fileupload with this:

www.XXXXXX.com/faces/file.jsp?id=2 for example at this time i can access to the fileupload form

<rich:fileUploa开发者_如何学JAVAd fileUploadListener="#{fileUploadManager.listener}"
id="upload" immediateUpload="true"> </rich:fileUpload>

i have tried also to insert something like this into the fileUpload tags

<a4j:actionparam name="id" value="#{group.id}" 
assignTo="#{fileUploadManager.idgruppo}"></a4j:actionparam>

at this time i have not problem with filter but the listener doesn't work, anyone can help me , i have to use richfaces not something else because this is an assignment for university pourpose.

i have allowed flash but the problem persist this is the server log

INFO: PWC1412: WebModule[/PW_socialnetworkRich] ServletContext.log():FileFilter:Initializing filter
INFO: PWC1412: WebModule[/PW_socialnetworkRich] ServletContext.log():FileFilter:doFilter()
INFO: PWC1412: WebModule[/PW_socialnetworkRich] ServletContext.log():FileFilter:DoBeforeProcessing
INFO: idgroup:23

INFO: PWC1412: WebModule[/PW_socialnetworkRich] ServletContext.log():FileFilter:DoAfterProcessing
INFO: PWC1412: WebModule[/PW_socialnetworkRich] ServletContext.log():FileFilter:doFilter()
INFO: PWC1412: WebModule[/PW_socialnetworkRich] ServletContext.log():FileFilter:DoBeforeProcessing
INFO: idgroup:null
INFO: Listener:
INFO: Name of the uploaded file
GRAVE: The log message is null.
java.sql.SQLException: Incorrect integer value: 'null' for column 'fk_group' at row 1

Another aproach is using the attribute allowFlash set to "true". Activating the embedded Flash module you can upload files to the sever without using Ajax request avoiding your filter.