RabbitMQ消费端自定义监听器【3-7】

最新推荐文章于 2025-07-31 17:42:22 发布

原创最新推荐文章于 2025-07-31 17:42:22 发布 · 4.8k 阅读

3 ·

CC 4.0 BY-SA版权

中间件专栏专栏收录该内容

9 篇文章

订阅专栏

本文介绍了一个使用RabbitMQ进行消息传递的Java示例，包括生产者和消费者代码，展示了如何设置连接、声明交换器和队列，以及如何发送和接收消息。

代码展示

生产者

package com.mq.rabbit.customizelistener;

import com.rabbitmq.client.*;

import java.io.IOException;

/**
 * @author Mqs
 * @date 2018/10/27 23:53
 * @desc
 */
public class Producer {
    public static void main(String[] args) throws Exception{
        // 1、创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
        factory.setVirtualHost("/");
        factory.setPort(AMQP.PROTOCOL.PORT);
        factory.setHost("192.168.200.130");
        factory.setUsername("mqs");
        factory.setPassword("mqs123");
        // 2、创建连接
        Connection connection = factory.newConnection();
        // 3、获取通道
        Channel channel = connection.createChannel();
        // 4、声明
        String exchangeName = "consumer_exchange";
        String routingKey = "consumer.key";

        String msg = "send message test consumer mandatory ";

        // 5、生产者发送消息
        for (int i = 0; i < 6; i++){
            channel.basicPublish(exchangeName, routingKey, true, null, msg.getBytes());
        }



    }
}

消费者

package com.mq.rabbit.customizelistener;

import com.rabbitmq.client.*;

/**
 * @author Mqs
 * @date 2018/10/27 23:53
 * @desc
 */
public class Consumer {
    public static void main(String[] args)throws Exception {
        // 1、创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
        factory.setVirtualHost("/");
        factory.setPort(AMQP.PROTOCOL.PORT);
        factory.setHost("192.168.200.130");
        factory.setUsername("mqs");
        factory.setPassword("mqs123");
        // 2、创建连接
        Connection connection = factory.newConnection();
        // 3、获取通道
        Channel channel = connection.createChannel();
        // 4、声明
        String exchangeName = "consumer_exchange";
        String routingKey = "consumer.key";
        String exchangeType = "direct";
        String queueName = "consumer_queue";
        // 5、声明一个交换器
        channel.exchangeDeclare(exchangeName, exchangeType, true, false, null);
        // 6、声明一个队列
        channel.queueDeclare(queueName, true, false, false, null);
        // 7、绑定队列到交换器
        channel.queueBind(queueName, exchangeName, routingKey);
        // 8、创建一个消费者
        QueueingConsumer consumer = new QueueingConsumer(channel);
        // 消费消息
        channel.basicConsume(queueName, true, new MyConsumer(channel));

    }
}

自定义的消费者

package com.mq.rabbit.customizelistener;

import com.rabbitmq.client.*;
import com.rabbitmq.client.Consumer;

import java.io.IOException;

/**
 * @Author Mqs
 * @Date 2018/10/27 23:47
 * @Desc 自定义的消费者
 */
public class MyConsumer extends DefaultConsumer {

    /**
     * Constructs a new instance and records its association to the passed-in channel.
     *
     * @param channel the channel to which this consumer is attached
     */
    public MyConsumer(Channel channel) {
        super(channel);
    }

    @Override
    public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
        System.out.println("======handle message====");
        System.out.println("====consumerTag: " + consumerTag);
        System.out.println("==envelope: " + envelope);
        System.out.println("====properties: " + properties);
        System.out.println("====body: " + new String(body));
    }
}

消费者消费到消息以后会输出信息

=====================handle message===================
=======================consumerTag: amq.ctag-F-76S6IMnUJtDhdr1471FA
=======================envelope: Envelope(deliveryTag=1, redeliver=false, exchange=consumer_exchange, routingKey=consumer.key)
=======================properties: #contentHeader<basic>(content-type=null, content-encoding=null, headers=null, delivery-mode=null, priority=null, correlation-id=null, reply-to=null, expiration=null, message-id=null, timestamp=null, type=null, user-id=null, app-id=null, cluster-id=null)
=======================body: send message test consumer mandatory 
=====================handle message===================
=======================consumerTag: amq.ctag-F-76S6IMnUJtDhdr1471FA
=======================envelope: Envelope(deliveryTag=2, redeliver=false, exchange=consumer_exchange, routingKey=consumer.key)
=======================properties: #contentHeader<basic>(content-type=null, content-encoding=null, headers=null, delivery-mode=null, priority=null, correlation-id=null, reply-to=null, expiration=null, message-id=null, timestamp=null, type=null, user-id=null, app-id=null, cluster-id=null)
=======================body: send message test consumer mandatory 
=====================handle message===================
=======================consumerTag: amq.ctag-F-76S6IMnUJtDhdr1471FA
=======================envelope: Envelope(deliveryTag=3, redeliver=false, exchange=consumer_exchange, routingKey=consumer.key)
=======================properties: #contentHeader<basic>(content-type=null, content-encoding=null, headers=null, delivery-mode=null, priority=null, correlation-id=null, reply-to=null, expiration=null, message-id=null, timestamp=null, type=null, user-id=null, app-id=null, cluster-id=null)
=======================body: send message test consumer mandatory 
=====================handle message===================
=======================consumerTag: amq.ctag-F-76S6IMnUJtDhdr1471FA
=======================envelope: Envelope(deliveryTag=4, redeliver=false, exchange=consumer_exchange, routingKey=consumer.key)
=======================properties: #contentHeader<basic>(content-type=null, content-encoding=null, headers=null, delivery-mode=null, priority=null, correlation-id=null, reply-to=null, expiration=null, message-id=null, timestamp=null, type=null, user-id=null, app-id=null, cluster-id=null)
=======================body: send message test consumer mandatory 
=====================handle message===================
=======================consumerTag: amq.ctag-F-76S6IMnUJtDhdr1471FA
=======================envelope: Envelope(deliveryTag=5, redeliver=false, exchange=consumer_exchange, routingKey=consumer.key)
=======================properties: #contentHeader<basic>(content-type=null, content-encoding=null, headers=null, delivery-mode=null, priority=null, correlation-id=null, reply-to=null, expiration=null, message-id=null, timestamp=null, type=null, user-id=null, app-id=null, cluster-id=null)
=======================body: send message test consumer mandatory 
=====================handle message===================
=======================consumerTag: amq.ctag-F-76S6IMnUJtDhdr1471FA
=======================envelope: Envelope(deliveryTag=6, redeliver=false, exchange=consumer_exchange, routingKey=consumer.key)
=======================properties: #contentHeader<basic>(content-type=null, content-encoding=null, headers=null, delivery-mode=null, priority=null, correlation-id=null, reply-to=null, expiration=null, message-id=null, timestamp=null, type=null, user-id=null, app-id=null, cluster-id=null)
=======================body: send message test consumer mandatory