@OSGiResource injection in Servlets doesn't work on Tomcat 7 and Jetty
Apparently the integration of the @OSGiResource annotation within Servlets was never ported on Tomcat 7 and only partially on Jetty (OSGi BundleContext is not registered within java:comp/env).
Currently it works only on Tomcat 6 which was removed from JOnAS 5.3.0.