Question about filter in webapp for hibernate framework

Hi,
I use for my webapps, the hibernate framework and i 'have a filter for manage session: with this, i can load lazy object in my jsp pages because i close session in the 'finally{}' of "doFilter" method of my filter.
But in jahia the mapping (url-pattern) of my filter seems to be not mapped. I've read in forum that filter not work in jahia and i woud know if other solutions exist ?
Thanks
Sebastien jaussaud