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开启RabbitMQ的生产者发送消息到RabbitMQ服务端的接收确认（ACK）和消费者通过手动确认或者丢弃消费的消息。
通过配置 publisher-confirm-type: correlated 和publisher-returns: true开启生产者确认消息。

server:port: 8014spring:rabbitmq:username: adminpassword: 123456dynamic: true
#    port: 5672
#    host: 192.168.49.9addresses: 192.168.49.10:5672,192.168.49.9:5672,192.168.49.11:5672publisher-confirm-type: correlatedpublisher-returns: trueapplication:name: shushandatasource:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://ip/shushanusername: rootpassword: hikari:minimum-idle: 10maximum-pool-size: 20idle-timeout: 50000max-lifetime: 540000connection-test-query: select 1connection-timeout: 600000

RabbitConfig ：

package com.kexuexiong.shushan.common.config;import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.ReturnedMessage;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.connection.CorrelationData;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Slf4j
@Configuration
public class RabbitConfig {@Beanpublic RabbitTemplate createRabbitTemplate(ConnectionFactory connectionFactory) {RabbitTemplate rabbitTemplate = new RabbitTemplate();rabbitTemplate.setConnectionFactory(connectionFactory);rabbitTemplate.setMandatory(true);rabbitTemplate.setConfirmCallback((correlationData, ack, cause) -> {log.info("confirmCallback  data: " + correlationData);log.info("confirmCallback ack :" + ack);log.info("confirmCallback cause :" + cause);});rabbitTemplate.setReturnsCallback(returned -> log.info("returnsCallback msg : " + returned));return rabbitTemplate;}
}

AckReceiver 手动确认消费者：

package com.kexuexiong.shushan.common.mq;import com.rabbitmq.client.Channel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.listener.api.ChannelAwareMessageListener;
import org.springframework.stereotype.Component;import java.io.ByteArrayInputStream;
import java.io.ObjectInputStream;
import java.util.Map;
import java.util.Objects;@Slf4j
@Component
public class AckReceiver implements ChannelAwareMessageListener {@Overridepublic void onMessage(Message message, Channel channel) throws Exception {long deliveryTag = message.getMessageProperties().getDeliveryTag();byte[] messageBody = message.getBody();try (ObjectInputStream inputStream = new ObjectInputStream(new ByteArrayInputStream(messageBody));) {Map<String, String> msg = (Map<String, String>) inputStream.readObject();log.info(message.getMessageProperties().getConsumerQueue()+"-ack Receiver :" + msg);log.info("header msg :"+message.getMessageProperties().getHeaders());if(Objects.equals(message.getMessageProperties().getConsumerQueue(),MqConstant.BUSINESS_QUEUE)){channel.basicNack(deliveryTag,false,false);}else if(Objects.equals(message.getMessageProperties().getConsumerQueue(),MqConstant.DEAD_LETTER_QUEUE)){channel.basicAck(deliveryTag, true);}else {channel.basicAck(deliveryTag, true);}} catch (Exception e) {channel.basicReject(deliveryTag, false);log.error(e.getMessage());}}
}

通过配置 simpleMessageListenerContainer.setQueueNames(MqConstant.DEAD_LETTER_QUEUE)可以监听多个消息队列。

package com.kexuexiong.shushan.common.mq;import org.springframework.amqp.core.AcknowledgeMode;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class MessageListenerConfig {@Autowiredprivate CachingConnectionFactory connectionFactory;@Autowiredprivate AckReceiver ackReceiver;@Beanpublic SimpleMessageListenerContainer simpleMessageListenerContainer() {SimpleMessageListenerContainer simpleMessageListenerContainer = new SimpleMessageListenerContainer(connectionFactory);simpleMessageListenerContainer.setConcurrentConsumers(2);simpleMessageListenerContainer.setMaxConcurrentConsumers(2);simpleMessageListenerContainer.setAcknowledgeMode(AcknowledgeMode.MANUAL);//,MqConstant.demoDirectQueue, MqConstant.FANOUT_A, MqConstant.BIG_CAR_TOPICsimpleMessageListenerContainer.setQueueNames(MqConstant.DEAD_LETTER_QUEUE);simpleMessageListenerContainer.setMessageListener(ackReceiver);return simpleMessageListenerContainer;}}

package com.kexuexiong.shushan.controller.mq;import cn.hutool.core.date.DateUtil;
import cn.hutool.core.util.RandomUtil;
import com.kexuexiong.shushan.common.mq.MqConstant;
import com.kexuexiong.shushan.controller.BaseController;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.MessagePostProcessor;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;@Slf4j
@RestController
@RequestMapping("/mq/")
public class MqController extends BaseController {@AutowiredRabbitTemplate rabbitTemplate;@GetMapping("/callback/sendDirectMessage")public String sendDirectMessageCallback(){String msgId = UUID.randomUUID().toString();String msg = "demo msg ,kexuexiong";String createTime = DateUtil.format(new Date(),"YYYY-MM-dd HH:mm:ss");Map<String,Object> map = new HashMap();map.put("msgId",msgId);map.put("msg",msg);map.put("createTime",createTime);rabbitTemplate.convertAndSend("noneDirectExchange","demoDirectRouting",map);return "ok";}@GetMapping("/callback/lonelyDirectExchange")public String lonelyDirectExchange(){String msgId = UUID.randomUUID().toString();String msg = "demo msg ,kexuexiong";String createTime = DateUtil.format(new Date(),"YYYY-MM-dd HH:mm:ss");Map<String,Object> map = new HashMap();map.put("msgId",msgId);map.put("msg",msg);map.put("createTime",createTime);rabbitTemplate.convertAndSend(MqConstant.lonelyDirectExchange,"demoDirectRouting",map);return "ok";}
}

测试：

发送dirct消息 找不到交换机情况

2023-10-10T17:04:58.492+08:00 ERROR 27232 --- [.168.49.10:5672] o.s.a.r.c.CachingConnectionFactory       : Shutdown Signal: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no exchange 'noneDirectExchange' in vhost '/', class-id=60, method-id=40)
2023-10-10T17:04:58.492+08:00  INFO 27232 --- [nectionFactory6] c.k.shushan.common.config.RabbitConfig   : confirmCallback  data: null
2023-10-10T17:04:58.492+08:00  INFO 27232 --- [nectionFactory6] c.k.shushan.common.config.RabbitConfig   : confirmCallback ack :false
2023-10-10T17:04:58.492+08:00  INFO 27232 --- [nectionFactory6] c.k.shushan.common.config.RabbitConfig   : confirmCallback cause :channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no exchange 'noneDirectExchange' in vhost '/', class-id=60, method-id=40)

ack 为false。

发送dirct消息 找不到队列

2023-10-10T17:05:55.851+08:00  INFO 27232 --- [nectionFactory5] c.k.shushan.common.config.RabbitConfig   : confirmCallback  data: null
2023-10-10T17:05:55.852+08:00  INFO 27232 --- [nectionFactory5] c.k.shushan.common.config.RabbitConfig   : confirmCallback ack :true
2023-10-10T17:05:55.852+08:00  INFO 27232 --- [nectionFactory5] c.k.shushan.common.config.RabbitConfig   : confirmCallback cause :null
2023-10-10T17:05:55.865+08:00  INFO 27232 --- [nectionFactory6] c.k.shushan.common.config.RabbitConfig   : returnsCallback msg : ReturnedMessage [message=(Body:'[serialized object]' MessageProperties [headers={}, contentType=application/x-java-serialized-object, contentLength=0, receivedDeliveryMode=PERSISTENT, priority=0, deliveryTag=0]), replyCode=312, replyText=NO_ROUTE, exchange=lonelyDirectExchange, routingKey=demoDirectRouting]

ACK为true，replyText=NO_ROUTE。