码迷,mamicode.com
首页 > 其他好文 > 详细

RabbitMQ消费端自定义监听(九)

时间:2019-07-16 11:09:35      阅读:133      评论:0      收藏:0      [点我收藏+]

标签:get   sage   name   set   test   byte   exchange   cep   public   

  场景

    我们一般在代码中编写while循环,进行consumer.nextDelivery方法进行获取下一条消息,然后进行消费处理。

  实际环境

    我们使用自定义的Consumer更加的方便,解耦性更强,也在实际工作中最常用。

  操作  

        //生产端代码
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("127.0.0.1");
        connectionFactory.setPort(5672);
        connectionFactory.setVirtualHost("/");
        
        Connection connection = connectionFactory.newConnection();
        Channel channel = connection.createChannel();
        
        String exchange = "test_consumer_exchange";
        String routingKey = "consumer.save";
        
        String msg = "Hello RabbitMQ Consumer Message";
        
        for(int i =0; i<5; i ++){
            channel.basicPublish(exchange, routingKey, true, null, msg.getBytes());
        }
        //消费端代码
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("127.0.0.1");
        connectionFactory.setPort(5672);
        connectionFactory.setVirtualHost("/");
        
        Connection connection = connectionFactory.newConnection();
        Channel channel = connection.createChannel();
        
        
        String exchangeName = "test_consumer_exchange";
        String routingKey = "consumer.#";
        String queueName = "test_consumer_queue";
        
        channel.exchangeDeclare(exchangeName, "topic", true, false, null);
        channel.queueDeclare(queueName, true, false, false, null);
        channel.queueBind(queueName, exchangeName, routingKey);
        //使用自定义consumer
        channel.basicConsume(queueName, true, new MyConsumer(channel));    
       //自定义消费端
        //继承DefaultConsumer类
        public class MyConsumer extends DefaultConsumer {


               public MyConsumer(Channel channel) {
                       super(channel);
               }
    
               //重写handleDelivery()
              @Override
              public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                      System.err.println("-----------consume message----------");
                      System.err.println("consumerTag: " + consumerTag);
                      System.err.println("envelope: " + envelope);
                      System.err.println("properties: " + properties);
                      System.err.println("body: " + new String(body));
               }

  
          }    

    运行结果:

    技术图片

 

RabbitMQ消费端自定义监听(九)

标签:get   sage   name   set   test   byte   exchange   cep   public   

原文地址:https://www.cnblogs.com/luhan777/p/11193004.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!