Rabbitmq高级特性-TTL消息与死信队列详解

 

生成端发消息

package com.bfxy.rabbitmq.api.delay;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.ReturnListener;

public class Producer4Delay {  
      
    public static void main(String[] args) throws Exception {  
          
        ConnectionFactory connectionFactory = new ConnectionFactory() ;  
        
        //RabbitMQ-Server安装在本机，所以直接用127.0.0.1
        connectionFactory.setHost("192.168.11.76");
        connectionFactory.setPort(5672);
        Connection connection = connectionFactory.newConnection();
        //创建一个渠道  
        Channel channel = connection.createChannel() ;  
        
        //5 监听
        channel.addReturnListener(new ReturnListener() {
            public void handleReturn(int replyCode,
                                    String replyText,
                                    String exchange,
                                    String routingKey,
                                    AMQP.BasicProperties properties,
                                    byte[] body)
                    throws IOException {
                System.out.println("**************handleReturn**********");
                System.out.println("replyCode: " + replyCode);
                System.out.println("replyText: " + replyText);
                System.out.println("exchange: " + exchange);
                System.out.println("routingKey: " + routingKey);
                System.err.println("properties:x-delay: " + properties.getHeaders().get("x-delay"));
                System.out.println("body: " + new String(body));
            }
        });
        Map<String, Object> headers2 = new HashMap<String, Object>();
        headers2.put("x-delay", 5000L);
        AMQP.BasicProperties.Builder props2 = new AMQP.BasicProperties.Builder().headers(headers2);
        channel.basicPublish("delay.exchange", "delay.1111", true, props2.build(), "hello two".getBytes());
//        channel.close();   
//        connection.close();   
           
    }  
  
}  

消费端

package com.bfxy.rabbitmq.api.delay;

import java.util.HashMap;
import java.util.Map;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.QueueingConsumer;
import com.rabbitmq.client.QueueingConsumer.Delivery;

/**
 * <B>中文类名：</B>Consumer4Delay<BR>
 * <B>概要说明：</B><BR>
 * @author bhz（Alienware）
 * @since 2016年7月6日
 */
public class Consumer4Delay {  
  
    public static void main(String[] args) throws Exception {  
          
        ConnectionFactory connectionFactory = new ConnectionFactory() ;  
          
        connectionFactory.setHost("192.168.11.76");
        connectionFactory.setPort(5672);
        connectionFactory.setAutomaticRecoveryEnabled(true);
        Connection connection = connectionFactory.newConnection();
        
        Channel channel = connection.createChannel() ;  
        
        //延迟队列
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("x-delayed-type", "topic");
        channel.exchangeDeclare("delay.exchange", "x-delayed-message", true, false, map);
        channel.queueDeclare("delay.queue", true, false, false, null);
        channel.queueBind("delay.queue", "delay.exchange", "delay.#");
        QueueingConsumer consumer = new QueueingConsumer(channel) ;
        channel.basicConsume("delay.queue", false, consumer) ; 
        System.out.println("---------consume queue---------"); 
        while(true){  
            Delivery delivery = consumer.nextDelivery() ; 
            String msg = new String(delivery.getBody()) ;  
            try {
                System.out.println("received: " + msg); 
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            } catch (Exception e) {
                e.printStackTrace();
            }
            
        }  
          
    }  
      
}