问EnityManager经HK2注射WebSockets

EN

public class Hk2Configurator extends ServerEndpointConfig.Configurator {
    private static ServiceLocator serviceLocator;

    public Hk2Configurator() {
        if (serviceLocator == null) {
            serviceLocator = ServiceLocatorUtilities.createAndPopulateServiceLocator();
            ServiceLocatorUtilities.bind(serviceLocator, new ServicesBinder()); // binds the "normal" Services that interact with the DB

            ServiceLocatorUtilities.bind(serviceLocator, new AbstractBinder() {
                @Override
                protected void configure() {
                    bindFactory(EntityManagerFactory.class).to(EntityManager.class);
                }
            });
        }
    }

    @Override
    public <T> T getEndpointInstance(final Class<T> endpointClass) throws InstantiationException {
        T endpointInstance = super.getEndpointInstance(endpointClass);

        serviceLocator.inject(endpointInstance);

        return endpointInstance;
    }
}

public class EntityManagerFactory implements Factory<EntityManager> {
    private static final javax.persistence.EntityManagerFactory FACTORY = Persistence.createEntityManagerFactory("PersistenceUnit");

    @Override
    public final EntityManager provide() {
        return FACTORY.createEntityManager();
    }

    @Override
    public final void dispose(final EntityManager instance) {
        instance.close();
    }
}