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ActionMQ事务手动签收小Demo
ps:事务提交都按自动处理,不写textMessage.acknowledge();也不会有重复消费问题,开启事物...
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19
2019/07

ActionMQ事务手动签收小Demo

ps:事务提交都按自动处理,不写textMessage.acknowledge();也不会有重复消费问题,开启事物必须session.commit();

务手动签收消息生产者类

/**
 * @author songzixian
 * @description
 */
public class JmsProduce {

    public static final  String ACTIVEMQ_URL = "tcp://192.168.78.138:61616";
    public static final  String QUEUE_NAME= "queue01";


    public static void main(String[] args) throws Exception{
        //1.创建工厂,安装url地址采用默认账户密码
        ActiveMQConnectionFactory activeMQConnectionFactory  = new ActiveMQConnectionFactory(ACTIVEMQ_URL);

        //2.通过连接工厂,获得连接Connection
        Connection connection = activeMQConnectionFactory.createConnection();
        //启动
        connection.start();

        //3.创建会话session 进行手动签收 (有两个参数,1.事物 2.签收)
        Session session = connection.createSession(true, Session.CLIENT_ACKNOWLEDGE);

        //4.创建目的地(具体是队列还是主题)
         Queue queue = session.createQueue(QUEUE_NAME);

         //5.创建消息生产者
         MessageProducer messageProducer = session.createProducer(queue);
         //设置消息非持久化
         messageProducer.setDeliveryMode(DeliveryMode.PERSISTENT);

         //6.通过使用messageProducer生产3条消息发送到MQ队列中
         for(int  q= 1;q<=5;q++){

             //7.创建消息
             TextMessage textMessage = session.createTextMessage("msg----"+q);//理解为一个字符串
             //8.通过消息生产者发布消息
             messageProducer.send(textMessage);

         }

         //9.关闭资源
         messageProducer.close();
         //提交事物
         session.commit();
         session.close();
         connection.close();

        System.out.println("消息发送成功!");
    }
}

重点如图:
ActionMQ事务手动签生产者类.png
务手动签收消息消费者类

/**
 * @author songzixian
 * @description ActiveMQ消费者
 */
public class JmsConsumer {

    public static final String ActiveMQ_URL="tcp://192.168.78.138:61616";
    public static final String QUEUE_NAME = "queue01";

      @Test
      public void test01() throws Exception{
        System.out.println("我是1号消费者");

        //1.创建连接工厂,按照指定的url地址,采用默认帐号密码
        ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory(ActiveMQ_URL);

        //2.通过连接工厂,获得连接connection
        Connection connection = activeMQConnectionFactory.createConnection();
        //启动
        connection.start();
        //3.创建会话session
        Session session = connection.createSession(true,Session.CLIENT_ACKNOWLEDGE);

        //4.创建目的地(具体是列队还是主题topic);
        Queue queue = session.createQueue(QUEUE_NAME);


        //5.创建消息消费者
        MessageConsumer messageConsumer = session.createConsumer(queue);

        while (true){
            TextMessage textMessage = (TextMessage) messageConsumer.receive(4000L);
            if (textMessage != null){
                System.out.println("消费者接收到了消息"+textMessage.getText());

                //手动签收
                textMessage.acknowledge();
            }else {
                break;
            }
        }

        //关闭资源
        messageConsumer.close();
        //提交事物
        session.commit();
        session.close();
        connection.close();
    }
     
}

重点如图:
ActiveMQ事物消费者.png

页面效果图:
ActionMQ事务手动签收效果图.png

Last modification:July 19th, 2019 at 07:05 am
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