http://docs.jboss.org/ejb3/app-server/tutorial/ear/ear.html
@EJB annotations are usable in servlets and JSPs, but unfortunately, we have not yet updated tomcat to support it. Also, Tomcat works with the old XML format so you cannot use XML either. So for now, you must lookup the EJB via its global JNDI name. This is not compliant, but if you abstract out enough you'll be fine.
public void init() throws ServletException { super.init(); try { InitialContext ctx = new InitialContext(); // J2EE 1.5 has not yet defined exact XML <ejb-ref> syntax for EJB3 CalculatorLocal calculator = (CalculatorLocal) ctx.lookup("tutorial/CalculatorBean/local"); setCalculator(calculator); } catch (NamingException e) { throw new RuntimeException(e); } }