myeclipse10 实现EJB3 MDB之发布式通信

最新推荐文章于 2017-05-11 18:09:15 发布

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本文详细介绍了如何配置消息目标地址，并通过Java实现消息的接收和创建消息生产者实例，涉及主题（Topic）消息传递机制，包括配置JNDI名称、使用MessageDriven注解接收消息以及创建消息生产者进行消息发送。

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配置消息目标地址

<?xml version="1.0" encoding="UTF-8"?>

<!-- $Id: oil-service.xml 38188 2005-11-17 00:11:34Z adrian $ -->

<server>

  <!-- JBossMQ communication using the Optimizated Invocation Layer
       The server connects back to the client on a different socket -->

  <mbean code="org.jboss.mq.server.jmx.Topic" name="jboss.mq.destination:service=Topic,name=chatTopic">
    <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends>
	<attribute name="JNDIName">topic/chatTopic</attribute>
  </mbean>

</server>

接受消息

package com.java;

import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;

@MessageDriven(activationConfig = {
		@ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Topic"),
		@ActivationConfigProperty(propertyName = "destination", propertyValue = "topic/mytopic") })
public class MyMDBBean implements MessageListener {
	public void onMessage(Message msg) {
		try {
			TextMessage textMessage = (TextMessage) msg;
			System.out.println("MyTopicMDBBean被调用了【" + textMessage.getText()
					+ "】");
		} catch (JMSException e) {
			e.printStackTrace();
		}
	}
}

创建消息生产者

<%@ page language="java"
	import="java.util.*,javax.naming.*,java.text.*,javax.jms.*,java.util.Properties"
	pageEncoding="UTF-8"%>
<%
	InitialContext ctx = new InitialContext();
	//获取ConnectionFactory对象
	TopicConnectionFactory factory = (TopicConnectionFactory) ctx
			.lookup("ConnectionFactory");
	//创建TopicConnection对象
	TopicConnection connection = factory.createTopicConnection();
	//创建TopicSession对象，第一个参数表示事务自动提交，第二个参数标识一旦消息被正确送达，将自动发回响应
	TopicSession sess = connection.createTopicSession(false,
			TopicSession.AUTO_ACKNOWLEDGE);
	//获得Destination对象
	Topic topic = (Topic) ctx.lookup("topic/mytopic");
	//创建文本消息
	TextMessage msg = sess.createTextMessage("世界，你好");
	//创建发布者
	TopicPublisher publisher = sess.createPublisher(topic);
	//发送消息
	publisher.publish(msg);
	//关闭会话
	sess.close();
%>