用消息驱动bean来处理本地的JMS消息太容易不过了，但是如何处理远程的消息呢？翻遍了Java EE手册和API也找不到。原来各种应用服务器都有各自的实现。那么如何让jboss下的消息驱动bean消费远程JMS消息呢？把下面的代码复制到一个文件里，并重名为以-service.xml结尾的文件，放到jboss的deploy目录，就可以在本地得到一个从远程获取消息的JMS provider。
<mbean code="org.jboss.jms.jndi.JMSProviderLoader"
name="jboss.mq:service=JMSProviderLoader,name=RemoteJMSProvider,server=remotehost">
<attribute name="ProviderName">RemoteJMSProvider</attribute>
<attribute name="ProviderAdapterClass">org.jboss.jms.jndi.JNDIProviderAdapter</attribute>
<!-- The connection factory -->
<attribute name="FactoryRef">UIL2XAConnectionFactory</attribute>
<!-- The queue connection factory -->
<attribute name="QueueFactoryRef">UIL2XAConnectionFactory</attribute>
<!-- The topic factory -->
<attribute name="TopicFactoryRef">UIL2XAConnectionFactory</attribute>
<!-- Connect to JNDI on the host "the-remote-host-name" port 1099-->
<attribute name="Properties">
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jnp.interfaces
java.naming.provider.url=the-remote-host-name:1099
</attribute>
</mbean>
name="jboss.mq:service=JMSProviderLoader,name=RemoteJMSProvider,server=remotehost">
<attribute name="ProviderName">RemoteJMSProvider</attribute>
<attribute name="ProviderAdapterClass">org.jboss.jms.jndi.JNDIProviderAdapter</attribute>
<!-- The connection factory -->
<attribute name="FactoryRef">UIL2XAConnectionFactory</attribute>
<!-- The queue connection factory -->
<attribute name="QueueFactoryRef">UIL2XAConnectionFactory</attribute>
<!-- The topic factory -->
<attribute name="TopicFactoryRef">UIL2XAConnectionFactory</attribute>
<!-- Connect to JNDI on the host "the-remote-host-name" port 1099-->
<attribute name="Properties">
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jnp.interfaces
java.naming.provider.url=the-remote-host-name:1099
</attribute>
</mbean>
注意，你要把上面的 the-remote-host-name 改成你的。部署完成后，确认在jboss的JndiViewer里能不能看到 java:/RemoteJMSProvider 。然后再MDB类上加上：
@MessageDriven(activateConfig = {
@ActivationConfigProperty(propertyName="destinationType", propertyValue="javax.jms.Queue"),
@ActivationConfigProperty(propertyName="destination", propertyValue="queue/testQueue"),
@ActivationConfigProperty(propertyName="providerAdapterJNDI", propertyValue="java:/RemoteJMSProvider")
})
public class MDB implements MessageListener {
...
}
@ActivationConfigProperty(propertyName="destinationType", propertyValue="javax.jms.Queue"),
@ActivationConfigProperty(propertyName="destination", propertyValue="queue/testQueue"),
@ActivationConfigProperty(propertyName="providerAdapterJNDI", propertyValue="java:/RemoteJMSProvider")
})
public class MDB implements MessageListener {
...
}
providerAdapterJNDI属性使这个MDB从刚才部署好的JMS provider那里读取消息。
