RabbitMQ 死信消息队列 重复消费 basicAck basicNack

/**
 * 消息队列配置
 * <p>
 * http://47.94.169.13:15675/#/
 * <p>
 * FanoutExchange: 将消息分发到所有的绑定队列，无routingkey的概念
 * HeadersExchange ：通过添加属性key-value匹配
 * DirectExchange:按照routingkey分发到指定队列
 * TopicExchange:多关键字匹配
 */
@Configuration
public class RabbitMqConfig {

    /**
     * 订单消息实际消费队列所绑定的交换机
     */
    @Bean
    DirectExchange orderDirect() {
        return (DirectExchange) ExchangeBuilder
                .directExchange(QueueEnum.QUEUE_ORDER_CANCEL.getExchange())
                .durable(true)
                .build();
    }

    /**
     * 所绑定的交换机
     * 订单延迟队列队列
     */
    @Bean
    DirectExchange orderTtlDirect() {
        return (DirectExchange) ExchangeBuilder
                .directExchange(QueueEnum.QUEUE_TTL_ORDER_CANCEL.getExchange())
                .durable(true)
                .build();
    }


    /**
     * 订单实际消费队列
     */
    @Bean
    public Queue orderQueue() {
        return new Queue(QueueEnum.QUEUE_ORDER_CANCEL.getName());
    }

    /**
     * 订单延迟队列（死信队列）
     */
    @Bean
    public Queue orderTtlQueue() {
        return QueueBuilder
                .durable(QueueEnum.QUEUE_TTL_ORDER_CANCEL.getName())
                .withArgument("x-dead-letter-exchange", QueueEnum.QUEUE_ORDER_CANCEL.getExchange())//到期后转发的交换机
                .withArgument("x-dead-letter-routing-key", QueueEnum.QUEUE_ORDER_CANCEL.getRouteKey())//到期后转发的路由键
                .build();
    }

    /**
     * 将订单队列绑定到交换机
     */
    @Bean
    Binding orderBinding(DirectExchange orderDirect, Queue orderQueue) {
        return BindingBuilder
                .bind(orderQueue)
                .to(orderDirect)
                .with(QueueEnum.QUEUE_ORDER_CANCEL.getRouteKey());
    }

    /**
     * 将订单延迟队列绑定到交换机
     */
    @Bean
    Binding orderTtlBinding(DirectExchange orderTtlDirect, Queue orderTtlQueue) {
        return BindingBuilder
                .bind(orderTtlQueue)
                .to(orderTtlDirect)
                .with(QueueEnum.QUEUE_TTL_ORDER_CANCEL.getRouteKey());
    }


    //https://www.jianshu.com/p/2c5eebfd0e95
//    @Bean
//    public RabbitListenerContainerFactory<?> rabbitListenerContainerFactory(ConnectionFactory connectionFactory) {
//        SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
//        factory.setConnectionFactory(connectionFactory);
//        factory.setMessageConverter(new Jackson2JsonMessageConverter());
//        factory.setAcknowledgeMode(AcknowledgeMode.MANUAL);             //开启手动 ack
//        return factory;
//    }

//    @Bean
//    public SimpleMessageListenerContainer messageListenerContainer(ConnectionFactory connectionFactory) {
//        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
//        container.setConnectionFactory(connectionFactory);
//        container.setQueueNames("consumer_queue");              // 监听的队列
//        container.setAcknowledgeMode(AcknowledgeMode.AUTO);     // 根据情况确认消息
//        container.setMessageListener((MessageListener) (message) -> {
//            System.out.println("====接收到消息=====");
//            System.out.println(new String(message.getBody()));
//            //抛出NullPointerException异常则重新入队列
//            //throw new NullPointerException("消息消费失败");
//            //当抛出的异常是AmqpRejectAndDontRequeueException异常的时候，则消息会被拒绝，且requeue=false
//            //throw new AmqpRejectAndDontRequeueException("消息消费失败");
//            //当抛出ImmediateAcknowledgeAmqpException异常，则消费者会被确认
//            throw new ImmediateAcknowledgeAmqpException("消息消费失败");
//        });
//        return container;
//    }

}

package com.ityu.studystreamrmq.rabbitmq;

import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.connection.CorrelationData;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.stereotype.Component;

import java.util.UUID;

@Component
@Slf4j
public class TestSendMessage implements RabbitTemplate.ConfirmCallback, RabbitTemplate.ReturnCallback {


    private final RabbitTemplate rabbitTemplate;

    public TestSendMessage(RabbitTemplate rabbitTemplate) {
        this.rabbitTemplate = rabbitTemplate;
        rabbitTemplate.setConfirmCallback(this::confirm); //rabbitTemplate如果为单例的话，那回调就是最后设置的内容
        rabbitTemplate.setReturnCallback(this::returnedMessage);
        rabbitTemplate.setMandatory(true);
    }

    public void sendMsg(String exchange, String routkey, Object content) {
        CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());
        rabbitTemplate.convertAndSend(exchange, routkey, content, correlationId);

    }

    @Override
    public void confirm(CorrelationData correlationData, boolean ack, String cause) {
        log.info(" 消息确认的id： " + correlationData);
        if (ack) {
            log.info("消息发送成功");
            //发送成功 删除本地数据库存的消息
        } else {
            log.info("消息发送失败：id " + correlationData + "消息发送失败的原因" + cause);
            // 根据本地消息的状态为失败，可以用定时任务去处理数据

        }
    }

    @Override
    public void returnedMessage(Message message, int replyCode, String replyText, String exchange, String routingKey) {
        log.info("returnedMessage [消息从交换机到队列失败]  message：" + message);
    }

}

package com.ityu.studystreamrmq.rabbitmq;

import com.rabbitmq.client.Channel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.support.AmqpHeaders;
import org.springframework.messaging.handler.annotation.Header;
import org.springframework.stereotype.Component;

import java.io.IOException;

@Component
@RabbitListener(queues = "ityu.order.cancel")
@Slf4j
public class Customer1 {

    @RabbitHandler
    public void handle(String message, Channel channel, @Header(AmqpHeaders.DELIVERY_TAG) long tag) throws IOException {
        System.out.println(System.currentTimeMillis());
        System.out.println(message);
//        try {
//            /**
//             * 防止重复消费，可以根据传过来的唯一ID先判断缓存数据库中是否有数据
//             * 1、有数据则不消费，直接应答处理
//             * 2、缓存没有数据，则进行消费处理数据，处理完后手动应答
//             * 3、如果消息 处理异常则，可以存入数据库中，手动处理（可以增加短信和邮件提醒功能）
//             */
//             channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);
//        } catch (IOException e) {
//            e.printStackTrace();
//            channel.basicNack(message.getMessageProperties().getDeliveryTag(), false, true);
//        }


    }
}

package com.ityu.studystreamrmq;


import com.ityu.studystreamrmq.rabbitmq.QueueEnum;
import com.ityu.studystreamrmq.rabbitmq.TestSendMessage;
import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.amqp.AmqpException;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessagePostProcessor;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class MyTest {

    @Autowired
    private TestSendMessage amqpTemplate;
    @Autowired
    private RabbitTemplate amqpTemplate2;

    @Test
    public void sendMsg() {
        amqpTemplate.sendMsg(QueueEnum.QUEUE_ORDER_CANCEL.getExchange(), QueueEnum.QUEUE_ORDER_CANCEL.getName(), "你好啊不错哦");
    }

    @Test
    public void sendMsg2() {
        System.out.println(System.currentTimeMillis());
        amqpTemplate2.convertAndSend(QueueEnum.QUEUE_TTL_ORDER_CANCEL.getExchange(), QueueEnum.QUEUE_TTL_ORDER_CANCEL.getRouteKey(), "我是延迟消息你能发现不50000", message -> {
            message.getMessageProperties().setExpiration("500000");
            return message;
        });
    }


}