activemq订阅发布模式(非持久订阅)

Posted 2020-10-14 爷的眼睛闪亮

生产者JMSProducer:

package com.sun.test.aircraft.activemq.topic;

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

import javax.jms.*;

/**
 * @Author:sun
 * @version:
 * @Description:
 * @Date:Created in 16:43 2017/11/10
 */
public class JMSProducer {
    private static final int SEND_NUMBER = 5;

    public static void main(String[] args) {

        ConnectionFactory connectionFactory; // ConnectionFactory--连接工厂，JMS用它创建连接
        // Provider 的连接
        Connection connection = null; // Connection ：JMS 客户端到JMS
        Session session; // Session： 一个发送或接收消息的线程
        Destination destination; // Destination ：消息的目的地;消息发送给谁.
        MessageProducer producer; // MessageProducer：消息发送者
        // 构造ConnectionFactory实例对象，此处采用ActiveMq的实现jar ActiveMQConnection.DEFAULT_USER,ActiveMQConnection.DEFAULT_PASSWORD, "tcp://localhost:61616"
        connectionFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER,ActiveMQConnection.DEFAULT_PASSWORD, "tcp://192.168.30.124:61616");
        try { // 构造从工厂得到连接对象
            connection = connectionFactory.createConnection();
            // 启动
            connection.start();
            // 获取操作连接
            session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
            // 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 = session.createTopic("SunnyTopics");
            // 得到消息生成者【发送者】
            producer = session.createProducer(destination);
            // 设置不持久化，此处学习，实际根据项目决定
            producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
            // 构造消息，此处写死，项目就是参数，或者方法获取
            sendMessage(session, producer);
            session.commit();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (null != connection)
                    connection.close();
            } catch (Throwable ignore) {
            }
        }
    }

    public static void sendMessage(Session session, MessageProducer producer) throws Exception {
        for (int i = 1; i <= SEND_NUMBER; i++) {
            TextMessage message = session.createTextMessage("ActiveMq 发送的消息" + i);
            // 发送消息到目的地方

            System.out.println("发送消息：" + "ActiveMq 发送的消息" + i);
            producer.send(message);
        }
    }
}
消费者JMSConsumer：

package com.sun.test.aircraft.activemq.topic;

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

import javax.jms.*;

/**
 * @Author:sun
 * @version:
 * @Description:
 * @Date:Created in 16:46 2017/11/10
 */
public class JMSConsumer {
    public static void main(String[] args) {
        // ConnectionFactory ：连接工厂，JMS 用它创建连接
        ConnectionFactory connectionFactory;
        // Connection ：JMS 客户端到JMS Provider 的连接
        Connection connection = null;
        // Session： 一个发送或接收消息的线程
        Session session;
        // Destination ：消息的目的地;消息发送给谁.
        Destination destination;
        // 消费者，消息接收者
        MessageConsumer consumer;
        connectionFactory = new ActiveMQConnectionFactory(
                ActiveMQConnection.DEFAULT_USER,
                ActiveMQConnection.DEFAULT_PASSWORD, "tcp://192.168.30.124:61616");
        try {
            // 构造从工厂得到连接对象
            connection = connectionFactory.createConnection();
            // 启动
            connection.start();
            // 获取操作连接
            session = connection.createSession(Boolean.FALSE,
                    Session.AUTO_ACKNOWLEDGE);
            // 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 = session.createQueue("SunnyTopics");
             destination=session.createTopic("SunnyTopics");
            consumer = session.createConsumer(destination);
            while (true) {
                // 设置接收者接收消息的时间，为了便于测试，这里谁定为100s
                TextMessage message = (TextMessage) consumer.receive(500000);
                if (null != message) {
                    System.out.println("收到消息" + message.getText());
                } else {
                    break;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (null != connection)
                    connection.close();
            } catch (Throwable ignore) {
            }
        }
    }
}

 

先启动消费者（订阅），再启动生产者（发布）