Question

为什么我的拦截器不起作用？

MyLog.java

@Inherited
@InterceptorBinding
@Retention(RUNTIME)
@Target({METHOD, TYPE})
public @interface MyLog {
}

MyLogger.java

@Interceptor
@MyLog
@Priority(Interceptor.Priority.APPLICATION)
public class MyLogger {
    @AroundInvoke
    public Object log(InvocationContext context) throws Exception{ 
        System.out.println("begin " + context.getMethod().getName());
        Object obj = context.proceed();
        System.out.println("end " + context.getMethod().getName());
        return obj;
    }
}

PerguntaController.java

import interceptor.MyLog;
import java.io.Serializable;
import java.util.List;
import javax.ejb.EJB;
import javax.ejb.EJBException;
import javax.inject.Named;
import javax.enterprise.context.SessionScoped;
@Named("PerguntaController")
@SessionScoped
public class PerguntaController implements Serializable {

    @EJB
    private PerguntaFacade ejbFacade;

    @MyLog
    public List<> getAll() {
        return ejbFacade.getAll();
    }

    @MyLog
    public void update(Pergunta pergunta) {
        ejbFacade.update(pergunta);
    }
}

PerguntaFacade.java

import interceptor.MyLog;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
@Stateless
public class PerguntaFacade {
    @PersistenceContext(unitName = "WebApplicationPU")
    private EntityManager em;

    @MyLog
    public List<Pergunta> getAll() {
        return em.createQuery("SELECT p FROM Pergunta p", Pergunta.class).getResultList();
    }

    @MyLog
    public void update(Pergunta pergunta) {
      //do something
    }
}

在jsf页面中使用getAll和update（来自PerguntaController）时，不会触发拦截器getAll并在PerguntaFacade上更新。我做错了什么？

Answer 1

解决。

使用bean-discovery-mode="annotated"的 beans.xml 不起作用。然后更改为bean-discovery-mode="all"并正常工作。

JSF拦截器不会触发

1 个答案: