Hello ActiveMQ

Hello ActiveMQ！

 

 

下面是ActiveMQ5.2的一个最简单例子！

环境还是apache-activemq-5.2.0-bin.zip，需要注意的是，开发时候，要将apache-activemq- 5.2.0-bin.zip解压缩后里面的activemq-all-5.2.0.jar包加入到classpath下面，这个包包含了所有jms接口 api的实现。

 

 

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

/**
* 消息的生产者（发送者）
*
* @author leizhimin 2009-8-12 11:41:20
*/
public class JmsSender {
        public static void main(String[] args) throws JMSException {
                // ConnectionFactory ：连接工厂，JMS 用它创建连接
                ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
                                ActiveMQConnection.DEFAULT_USER,
                                ActiveMQConnection.DEFAULT_PASSWORD,
                                "tcp://192.168.14.117:61616");
                //JMS 客户端到JMS Provider 的连接
                Connection connection = connectionFactory.createConnection();
                connection.start();
                // Session： 一个发送或接收消息的线程
                Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
                // Destination ：消息的目的地;消息发送给谁.
                // 获取session注意参数值my-queue是Query的名字
                Destination destination = session.createQueue("my-queue" );
                // MessageProducer：消息生产者
                MessageProducer producer = session.createProducer(destination);
                //设置不持久化
                producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
                //发送一条消息
                sendMsg(session, producer);
                session.commit();
                connection.close();
        }

        /**
         * 在指定的会话上，通过指定的消息生产者发出一条消息
         *
         * @param session    消息会话
         * @param producer 消息生产者
         */
        public static void sendMsg(Session session, MessageProducer producer) throws JMSException {
                //创建一条文本消息
                TextMessage message = session.createTextMessage("Hello ActiveMQ！" );
                //通过消息生产者发出消息
                producer.send(message);
                System.out.println("");
        }
}

 

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

/**
* 消息的消费者（接受者）
*
* @author leizhimin 2009-8-12 11:41:33
*/
public class JmsReceiver {
        public static void main(String[] args) throws JMSException {
                // ConnectionFactory ：连接工厂，JMS 用它创建连接
                ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
                                ActiveMQConnection.DEFAULT_USER,
                                ActiveMQConnection.DEFAULT_PASSWORD,
                                "tcp://192.168.14.117:61616");
                //JMS 客户端到JMS Provider 的连接
                Connection connection = connectionFactory.createConnection();
                connection.start();
                // Session： 一个发送或接收消息的线程
                Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
                // Destination ：消息的目的地;消息发送给谁.
                // 获取session注意参数值xingbo.xu-queue是一个服务器的queue，须在在ActiveMq的console配置
                Destination destination = session.createQueue("my-queue" );
                // 消费者，消息接收者
                MessageConsumer consumer = session.createConsumer(destination);
                while (true ) {
                        TextMessage message = (TextMessage) consumer.receive(1000);
                        if (null != message)
                                System.out.println("收到消息：" + message.getText());
                        else
                                break ;
                }
                session.close();
                connection.close();
        }
}

 

 

启动ActiveMQ，然后开始执行：

先运行发送者，连续运行了三次，最后一次控制台输出：

Process finished with exit code 0

 

后运行接受者，输出结果：

收到消息Hello ActiveMQ！
收到消息Hello ActiveMQ！
收到消息Hello ActiveMQ！

Process finished with exit code 0

 

注意：

其中的端口61616是ActiveMQ默认的配置，在activemq.xml中，

                <!-- The transport connectors ActiveMQ will listen to -->
                < transportConnectors >
                        < transportConnector name ="openwire" uri ="tcp://localhost:61616" discoveryUri ="multicast://default" />
                        < transportConnector name ="ssl" uri ="ssl://localhost:61617" />
                        < transportConnector name ="stomp" uri ="stomp://localhost:61613" />
                        < transportConnector name ="xmpp" uri ="xmpp://localhost:61222" />
                </ transportConnectors >

，建议不要改动，都用这个端口多好，就像ftp都用21端口，也没错。

 

 

这是官方的HelloWorld例子，不过看着不顺眼：

http://activemq.apache.org/hello-world.html

 

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