Using CDI freebies...

CDIFreebieResource.java

@Stateless
@TransactionManagement(TransactionManagementType.BEAN)
@Path("cdi/freebies")
public class CDIFreebieResource {
    
    @Inject
    UserTransaction uTx;
    @Inject
    Principal actor;
    @Inject
    HttpSession httpSession;
    @Inject
    HttpServletRequest httpSR;
    @Inject
    ServletContext sCtx;
    
    @GET
    public String get() throws Exception{
        return 
        "User Tx status: " + uTx.getStatus() + "\n" +
        "Principal: " + actor.getName() + "\n" +
        "HTTP Session ID: " + httpSession.getId() + "\n" +
        "HTTP Method: " + httpSR.getMethod() + "\n" + 
        "Context Path: " + sCtx.getContextPath();
    }
}