• activemq订阅发布模式(非持久订阅)


    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)



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  • 原文地址:https://www.cnblogs.com/austinspark-jessylu/p/7825301.html
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