glassfish - 如何将 session Bean 注入(inject)消息驱动 Bean？

Question

我对 Java EE 相当陌生，所以这可能很愚蠢。请多多包涵:D

我想将无状态 session bean 注入(inject)消息驱动 bean。基本上，MDB 获得一条 JMS 消息，然后使用 session bean 来执行工作。 session bean 保存业务逻辑。

这是我的 session Bean:

@Stateless
public class TestBean implements TestBeanRemote {

  public void doSomething() {
    // business logic goes here
  }
}

匹配界面:

@Remote
public interface TestBeanRemote {

  public void doSomething();
}

这是我的MDB:

@MessageDriven(mappedName = "jms/mvs.TestController", activationConfig =  {
@ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"),
@ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue")
    })
public class TestController implements MessageListener {

 @EJB
 private TestBean testBean;

    public TestController() {
    }

    public void onMessage(Message message) {
      testBean.doSomething();
    }
}

到目前为止，还不是火箭科学，对吧？

不幸的是，在将其部署到 glassfish v3 并向适当的 JMS 队列发送消息时，我收到 glassfish 无法找到 TestBean EJB 的错误:

java.lang.IllegalStateException: Exception attempting to inject Remote ejb-ref name=mvs.test.TestController/testBean,Remote 3.x interface =mvs.test.TestBean,ejb-link=null,lookup=null,mappedName=,jndi-name=mvs.test.TestBean,refType=Session into class mvs.test.TestController
Caused by: com.sun.enterprise.container.common.spi.util.InjectionException: Exception attempting to inject Remote ejb-ref name=mvs.test.TestController/testBean,Remote 3.x interface =mvs.test.TestBean,ejb-link=null,lookup=null,mappedName=,jndi-name=mvs.test.TestBean,refType=Session into class mvs.test.TestController
Caused by: javax.naming.NamingException: Lookup failed for 'java:comp/env/mvs.test.TestController/testBean' in SerialContext  [Root exception is javax.naming.NamingException: Exception resolving Ejb for 'Remote ejb-ref name=mvs.test.TestController/testBean,Remote 3.x interface =mvs.test.TestBean,ejb-link=null,lookup=null,mappedName=,jndi-name=mvs.test.TestBean,refType=Session' .  Actual (possibly internal) Remote JNDI name used for lookup is 'mvs.test.TestBean#mvs.test.TestBean' [Root exception is javax.naming.NamingException: Lookup failed for 'mvs.test.TestBean#mvs.test.TestBean' in SerialContext  [Root exception is javax.naming.NameNotFoundException: mvs.test.TestBean#mvs.test.TestBean not found]]]

所以我的问题是:

这是将 session bean 注入(inject)另一个 bean(特别是消息驱动 bean)的正确方法吗？

为什么命名查找失败？

Answer 1

你能试着定义这样的事情吗:

@Remote
public interface TestBeanRemote {

  public void doSomething();
}

@Stateless(name="TestBeanRemote")
public class TestBean implements TestBeanRemote {

  public void doSomething() {
    // business logic goes here
  }
}

然后在 MDB 中:

@MessageDriven(mappedName = "jms/mvs.TestController", activationConfig =  {
@ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"),
@ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue")
    })
public class TestController implements MessageListener {

    @EJB(beanName="TestBeanRemote")
    private TestBeanRemote testBean;

    public TestController() {
    }

    public void onMessage(Message message) {
      testBean.doSomething();
    }
}

如果这项工作，我会尝试提供一个解释:)