/**
 *
 * @author cirstea
 */
@WebServlet(name = "ControllerServlet", urlPatterns = {"/submitTicket"})
public class ControllerServlet extends HttpServlet {

    ...
    // key for retrieving the bean in the session
    private static final String STATEFUL_TEST_BEAN_KEY = "STATEFUL_TEST_BEAN_KEY";

    ...
    private TicketManager getStatefulBean(HttpServletRequest request) throws ServletException {
        HttpSession httpSession = request.getSession(true);
        TicketManager ticketManager = (TicketManager) httpSession.getAttribute(STATEFUL_TEST_BEAN_KEY);
        System.out.println("TicketManager = " + ticketManager);
        if (ticketManager == null) {
            try {
                InitialContext ic = new InitialContext();
                ticketManager = (TicketManager) ic.lookup("java:global/GestionPersonnes/GestionPersonnes-ejb/TicketManagerBean");
                httpSession.setAttribute(STATEFUL_TEST_BEAN_KEY, ticketManager);
            } catch (NamingException e) {
                throw new ServletException(e);
            }
        }
        return ticketManager;
    }

    private void invalidateSessionTicket(HttpServletRequest request) {
        HttpSession httpSession = request.getSession(true);
        httpSession.setAttribute(STATEFUL_TEST_BEAN_KEY, null);
    }


    ...
}