1.前言
在生产环境中由于一些不明原因,导致 RabbitMQ 重启,在 RabbitMQ 重启期间生产者消息投递失败, 导致消息丢失,需要手动处理和恢复。于是,我们开始思考,如何才能进行 RabbitMQ 的消息可靠投递呢?
2.添加配置信息
在application.properties文件中添加如下配置
#NONE 值是禁用发布确认模式,是默认值
#CORRELATED 值是发布消息成功到交换器后会触发回调方法
#SIMPLE 值经测试有两种效果,其一效果和 CORRELATED 值一样会触发回调方法,
# 其二在发布消息成功后使用 rabbitTemplate 调用 waitForConfirms 或 waitForConfirmsOrDie 方法等待 broker 节点返回发送结果,
# 根据返回结果来判定下一步的逻辑,要注意的点是 waitForConfirmsOrDie 方法如果返回 false 则会关闭 channel,
# 则接下来无法发送消息到 broker;
spring.rabbitmq.publisher-confirm-type=correlated
- NONE 值是禁用发布确认模式,是默认值
- CORRELATED 值是发布消息成功到交换器后会触发回调方法
- SIMPLE 值经测试有两种效果,其一效果和 CORRELATED 值一样会触发回调方法,其二在发布消息成功后使用rabbitTemplate 调用waitForConfirms 或 waitForConfirmsOrDie 方法等待 broker节点返回发送结果,根据返回结果来判定下一步的逻辑,要注意的点是waitForConfirmsOrDie 方法如果返回 false则会关闭 channel,则接下来无法发送消息到 broker;
3. 配置类
package com.hong.springboot.rabbitmq.config;import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;/*** @Description: 发布确认高级版配置类* @Author: hong* @Date: 2024-03-05 20:52* @Version: 1.0**/
@Configuration
public class ConfirmConfig {public static final String CONFIRM_EXCHANGE_NAME = "confirm.exchange";public static final String CONFIRM_QUEUE_NAME = "confirm.queue";public static final String CONFIRM_ROUTING_KEY = "key1";//声明业务 Exchange@Bean("confirmExchange")public DirectExchange confirmExchange() {return new DirectExchange(CONFIRM_EXCHANGE_NAME);}// 声明确认队列@Bean("confirmQueue")public Queue confirmQueue() {return QueueBuilder.durable(CONFIRM_QUEUE_NAME).build();}// 声明确认队列绑定关系@Beanpublic Binding queueBinding(@Qualifier("confirmQueue") Queue queue,@Qualifier("confirmExchange") DirectExchange exchange) {return BindingBuilder.bind(queue).to(exchange).with(CONFIRM_ROUTING_KEY);}
}
4.生产者
package com.hong.springboot.rabbitmq.controller;import com.hong.springboot.rabbitmq.config.ConfirmConfig;
import lombok.extern.slf4j.Slf4j;
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.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import java.text.SimpleDateFormat;
import java.util.Date;/*** @Description: 发布确认高级版生产者* @Author: hong* @Date: 2024-03-05 20:58* @Version: 1.0**/
@Slf4j
@RequestMapping("/confirm/")
@RestController
public class ConfirmProducerController {@Autowiredprivate RabbitTemplate rabbitTemplate;//http://localhost:8080/confirm/sendMsg/Hi,JAVA小生不才@GetMapping("sendMsg/{message}")public void sendMsg(@PathVariable String message) {log.info("当前时间:{},发送信息给队列:{}",new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) , message);rabbitTemplate.convertAndSend(ConfirmConfig.CONFIRM_EXCHANGE_NAME, ConfirmConfig.CONFIRM_ROUTING_KEY, message);}
}
5.消费者
package com.hong.springboot.rabbitmq.consumer;import com.hong.springboot.rabbitmq.config.ConfirmConfig;
import com.hong.springboot.rabbitmq.config.DelayedQueueConfig;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;import java.text.SimpleDateFormat;
import java.util.Date;/*** @Description: 发布确认高级版消费者* @Author: hong* @Date: 2024-03-05 21:05* @Version: 1.0**/
@Slf4j
@Component
public class ConfirmConsumer {@RabbitListener(queues = ConfirmConfig.CONFIRM_QUEUE_NAME)public void receiveConfirmMessage(Message message){String msg = new String(message.getBody());log.info("当前时间:{},收到信息{}",new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) , msg);}
}
正常情况下,发送http://localhost:8080/confirm/sendMsg/Hi,JAVA小生不才
6.回调接口
package com.hong.springboot.rabbitmq.config;import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.connection.CorrelationData;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;import javax.annotation.PostConstruct;/*** @Description: 发布确认高级版消息生产者的回调接口* @Author: hong* @Date: 2024-03-09 21:58* @Version: 1.0**/
@Slf4j
@Component
public class MyCallBack implements RabbitTemplate.ConfirmCallback{@Autowiredprivate RabbitTemplate rabbitTemplate;@PostConstructpublic void init(){rabbitTemplate.setConfirmCallback(this);}/*** 交换机不管是否收到消息的一个回调方法* 1.收到消息* correlationData 保存回调消息的id及相关信息* b true 交换机收到消息* s null* 2.未收到消息* correlationData 保存回调消息的id及相关信息* b false 交换机未收到消息* s 失败的原因* @param correlationData 消息相关数据* @param b 交换机是否收到消息* @param s 没收到消息的原因*/@Overridepublic void confirm(CorrelationData correlationData, boolean b, String s) {String id = correlationData != null ? correlationData.getId() : "";if (b) {log.info("交换机已经收到id为:{}的消息", id);} else {log.info("交换机还未收到id为:{}消息,原因:{}", id, s);}}
}