SpringBoot整合RabbitMQ实现延迟队列的示例详解

#NONE：禁用发布确认模式，是默认值，CORRELATED：发布消息成功到交换器后会触发回调方法
spring:
  rabbitmq:
    publisher-confirm-type: correlated

@Test  
public void testConfirmCallback() throws InterruptedException {  
    rabbitTemplate.setConfirmCallback(new RabbitTemplate.ConfirmCallback() {  
    /**  
    *  
    * @param correlationData 配置  
    * @param ack 交换机是否收到消息，true是成功，false是失败  
    * @param cause 失败的原因  
    */  
    @Override  
    public void confirm(CorrelationData correlationData, boolean ack, String cause) {  
        System.out.println("confirm=====>");  
        System.out.println("confirm==== ack="+ack);  
        System.out.println("confirm==== cause="+cause);  
        //根据ACK状态做对应的消息更新操作 TODO  
    }  
    });  
    rabbitTemplate.convertAndSend(RabbitMQConfig.EXCHANGE_NAME,"ikun.mei", "鸡你太美");  
    Thread.sleep(10000);  
}

spring:
  rabbitmq:
    #开启returnCallback
    publisher-returns: true
    #交换机处理消息到路由失败，则会返回给生产者
    template:
      mandatory: true

@Test  
void testReturnCallback() {  
    //为true,则交换机处理消息到路由失败，则会返回给生产者 配置文件指定，则这里不需指定  
    rabbitTemplate.setMandatory(true);  
    //开启强制消息投递（mandatory为设置为true），但消息未被路由至任何一个queue，则回退一条消息  
    rabbitTemplate.setReturnsCallback(returned -> {  
        int code = returned.getReplyCode();  
        System.out.println("code="+code);  
        System.out.println("returned="+ returned);  
    });  
    rabbitTemplate.convertAndSend(RabbitMQConfig.EXCHANGE_NAME,"123456","测试returnCallback");  
}

spring:
  rabbitmq:
    listener:  
      simple:  
        acknowledge-mode: manual

@RabbitHandler  
public void consumer(String body, Message message, Channel channel) throws IOException {  
    long msgTag = message.getMessageProperties().getDeliveryTag();  
    System.out.println("msgTag="+msgTag);  
    System.out.println("message="+ message);  
    System.out.println("body="+body);  

    //成功确认，使用此回执方法后，消息会被 rabbitmq broker 删除  
    channel.basicAck(msgTag,false);  
    // channel.basicNack(msgTag,false,true);  
  
}

package com.fandf.test.rabbit;  
  
import org.springframework.amqp.core.*;  
import org.springframework.beans.factory.annotation.Qualifier;  
import org.springframework.context.annotation.Bean;  
import org.springframework.context.annotation.Configuration;  
  
import java.util.HashMap;  
import java.util.Map;  
  
/**  
* @author fandongfeng  
* @date 2023/4/15 15:38  
*/  
@Configuration  
public class RabbitMQConfig {  
  
    /**  
    * 订单交换机  
    */  
    public static final String ORDER_EXCHANGE = "order_exchange";  
    /**  
    * 订单队列  
    */  
    public static final String ORDER_QUEUE = "order_queue";  
    /**  
    * 订单路由key  
    */  
    public static final String ORDER_QUEUE_ROUTING_KEY = "order.#";  

    /**  
    * 死信交换机  
    */  
    public static final String ORDER_DEAD_LETTER_EXCHANGE = "order_dead_letter_exchange";  
    /**  
    * 死信队列 routingKey  
    */  
    public static final String ORDER_DEAD_LETTER_QUEUE_ROUTING_KEY = "order_dead_letter_queue_routing_key";  

    /**  
    * 死信队列  
    */  
    public static final String ORDER_DEAD_LETTER_QUEUE = "order_dead_letter_queue";  


    /**  
    * 创建死信交换机  
    */  
    @Bean("orderDeadLetterExchange")  
    public Exchange orderDeadLetterExchange() {  
        return new TopicExchange(ORDER_DEAD_LETTER_EXCHANGE, true, false);  
    }  

    /**  
    * 创建死信队列  
    */  
    @Bean("orderDeadLetterQueue")  
    public Queue orderDeadLetterQueue() {  
        return QueueBuilder.durable(ORDER_DEAD_LETTER_QUEUE).build();  
    }  

    /**  
    * 绑定死信交换机和死信队列  
    */  
    @Bean("orderDeadLetterBinding")  
    public Binding orderDeadLetterBinding(@Qualifier("orderDeadLetterQueue") Queue queue, @Qualifier("orderDeadLetterExchange")Exchange exchange) {  
        return BindingBuilder.bind(queue).to(exchange).with(ORDER_DEAD_LETTER_QUEUE_ROUTING_KEY).noargs();  
    }  


    /**  
    * 创建订单交换机  
    */  
    @Bean("orderExchange")  
    public Exchange orderExchange() {  
        return new TopicExchange(ORDER_EXCHANGE, true, false);  
    }  

    /**  
    * 创建订单队列  
    */  
    @Bean("orderQueue")  
    public Queue orderQueue() {  
        Map<String, Object> args = new HashMap<>(3);  
        //消息过期后，进入到死信交换机  
        args.put("x-dead-letter-exchange", ORDER_DEAD_LETTER_EXCHANGE);  

        //消息过期后，进入到死信交换机的路由key  
        args.put("x-dead-letter-routing-key", ORDER_DEAD_LETTER_QUEUE_ROUTING_KEY);  

        //过期时间，单位毫秒  
        args.put("x-message-ttl", 10000);  

        return QueueBuilder.durable(ORDER_QUEUE).withArguments(args).build();  
    }  

    /**  
    * 绑定订单交换机和队列  
    */  
    @Bean("orderBinding")  
    public Binding orderBinding(@Qualifier("orderQueue") Queue queue, @Qualifier("orderExchange")Exchange exchange) {  
        return BindingBuilder.bind(queue).to(exchange).with(ORDER_QUEUE_ROUTING_KEY).noargs();  
    }  
  
  
}

package com.fandf.test.rabbit;  
  
import cn.hutool.core.date.DateUtil;  
import com.rabbitmq.client.Channel;  
import org.springframework.amqp.core.Message;  
import org.springframework.amqp.rabbit.annotation.RabbitHandler;  
import org.springframework.amqp.rabbit.annotation.RabbitListener;  
import org.springframework.stereotype.Component;  
  
import java.io.IOException;  
  
/**  
* @author fandongfeng  
* @date 2023/4/15 15:42  
*/  
@Component  
@RabbitListener(queues = RabbitMQConfig.ORDER_DEAD_LETTER_QUEUE)  
public class OrderMQListener {  
  
  
  
    @RabbitHandler  
    public void consumer(String body, Message message, Channel channel) throws IOException {  
        System.out.println("收到消息：" + DateUtil.now());  
        long msgTag = message.getMessageProperties().getDeliveryTag();  
        System.out.println("msgTag=" + msgTag);  
        System.out.println("message=" + message);  
        System.out.println("body=" + body);  
        channel.basicAck(msgTag, false);  
    }  
  
}

@Test  
void testOrder() throws InterruptedException {  
//为true,则交换机处理消息到路由失败，则会返回给生产者 配置文件指定，则这里不需指定  
    rabbitTemplate.setMandatory(true);  
    //开启强制消息投递（mandatory为设置为true），但消息未被路由至任何一个queue，则回退一条消息  
    rabbitTemplate.setReturnsCallback(returned -> {  
    int code = returned.getReplyCode();  
    System.out.println("code=" + code);  
    System.out.println("returned=" + returned);  
    });  
    rabbitTemplate.convertAndSend(RabbitMQConfig.ORDER_EXCHANGE, "order", "测试订单延迟");  
    System.out.println("发送消息：" + DateUtil.now());  
    Thread.sleep(20000);  
}