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javaejb

NullPointerException at @EJB Component

My code: 

@Path("/actors")
public class MainController {

  @EJB
  private ActorDaoLocal actorDao;  

}

@Local
public interface ActorDaoLocal { 
  //some stuff here
}

@Stateless
public class ActorDao implements ActorDaoLocal {

  @PersistenceContext
  private EntityManager em ; 
  //some stuff here 
}

@ManagedBean(name = "ActorBean")
@ApplicationScoped
public class ActorBean {

  @EJB
  private ActorDaoLocal usersDao;
}

When I am trying to use actorDao in MainController class, it is null. Why and how to fix it? I also tried to use ActorBean object, but it's also null.

Solution

  • Tomcat isn't an application server but instead a servlet container. You should use TomEE instead.