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如何将会话Bean注入到消息驱动Bean中?

glassfish-3 ejb-3.1 java-ee-6 cdi glassfish

5

Hank Jesus M C · 技术社区 · 16 年前

@Stateless
public class TestBean implements TestBeanRemote {

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

匹配接口:

@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();
    }
}

不幸的是,在将其部署到glassfish v3并将消息发送到相应的JMS队列时,我发现了以下错误:glassfish无法定位TestBean EJB:

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]]]

这是将会话bean注入另一个bean(特别是消息驱动bean)的正确方法吗?
为什么命名查找失败?

4 回复 | 直到 13 年前

1

6

Pascal Thivent 16 年前

你能试着这样定义吗:

@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();
    }
}

2

6

Roland Tiefenbrunner 14 年前

我认为第一个例子的问题是您试图注入EJB的实现,而不是它的接口。如果您不定义任何接口,甚至不定义远程接口,那么ejb3.1的本地无接口视图是可能的。因此,将注入点更改为以下值应该是可行的:

 @EJB
 private TestBeanRemote testBean;

希望这有帮助。

3

4

Hank Jesus M C 16 年前

我的问题似乎与控制反转有关,是由于我缺乏知识和Netbeans对类/接口名称的建议造成的。

我发现-为了找到正确的bean和接口-我应该正确地命名它们。以下是有效的方法:

@Remote
public interface Test {

  public void doSomething();
}

@Stateless
public class TestBean implements Test {

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

在MDB中我访问“测试” 不

@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 Test testBean;

    public TestController() {
    }

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

4

3

Hank Jesus M C 16 年前

好的,我发现如果我将注解@LocalBean添加到会话bean中,它就可以工作了。什么。。。?