SpringBoot2.x整合RabbitMQ实现回调确认、备份队列、死信

SpringBoot整合RabbitMQ官方地址：https://docs.spring.io/spring-boot/docs/current/reference/html/spring-boot-features.html#boot-features-amqp

一、添加依赖

		
			org.springframework.boot
			spring-boot-starter-amqp
		

二、在application.yml中配置

spring:
  application:
    name: springboot-rabbitmq
  rabbitmq:
    host: 192.168.184.138
    port: 5672
    username: admin
    password: 123456
    virtual-host: /
    publisher-confirm-type: correlated #必须配置这个才会确认回调
    publisher-returns: true
    listener:
      type: simple
      simple:
        acknowledge-mode: manual #手动确认
        prefetch: 1 #限制每次发送一条数据。
        concurrency: 3 #同一个队列启动几个消费者
        max-concurrency: 3 #启动消费者最大数量
        #重试策略相关配置
        retry:
          enabled: true #是否支持重试
          max-attempts: 5
          stateless: false
          #时间策略乘数因子
          multiplier: 1.0
          initial-interval: 1000ms
          max-interval: 10000ms
        default-requeue-rejected: true

完整配置查看：https://docs.spring.io/spring-boot/docs/2.1.3.RELEASE/reference/html/common-application-properties.html

三、生产者配置类

package com.rabbitmq.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;

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

/**
 * @Package: com.rabbitmq.config
 * @ClassName: :RabbitMQConfig
 * @Description: rabbitmq
 * @Author: Coding-Farmer
 * @Date: 2019/11/15 14:19
 */
@Configuration
public class RabbitMQConfig {
    private static Logger log = LoggerFactory.getLogger(RabbitMQConfig.class);
    @Autowired
    private CachingConnectionFactory connectionFactory;

    //目标转换器，需要哪种类型的转换器就创建哪种类型的转换器
    @Bean
    public DirectExchange exchangeHello(){
        Map eArguments = new HashMap<>();
        //备份交换器参数
        eArguments.put("alternate-exchange", "exchange.ae");
        return new DirectExchange("exchange.hello",true,false,eArguments);
    }
    //备份转换器
    @Bean
    public FanoutExchange exchangeAE(){
        return new FanoutExchange("exchange.ae",true,false,null);
    }
    //死信转换器
    @Bean
    public TopicExchange exchangeDLX(){
        return new TopicExchange("exchange.dlx",true,false,null);
    }

    //目标对列
    @Bean
    public Queue queueHello() {
        Map args = new HashMap<>();
        //声明死信交换器
        args.put("x-dead-letter-exchange", "exchange.dlx");
        //声明死信路由键
        args.put("x-dead-letter-routing-key", "dlx.test" );
        //声明队列消息过期时间 5000ms
        args.put("x-message-ttl", 5000);
        return new Queue("queue.hello",true,false,false,args);
    }

    //备份对列
    @Bean
    public Queue queueAE() {
        return new Queue("queue.ae",true,false,false,null);
    }

    //死信对列
    @Bean
    public Queue queueDLX() {
        return new Queue("queue.dlx",true,false,false,null);
    }

    //绑定目标对列
    @Bean
    public Binding bindingExchangeDirect(@Qualifier("queueHello")Queue queueHello, @Qualifier("exchangeHello") DirectExchange exchangeHello){
        return  BindingBuilder.bind(queueHello).to(exchangeHello).with("helloKey");
    }
    //绑定备份对列
    @Bean
    public Binding bindingExchangeAE(@Qualifier("queueAE")Queue queueAE, @Qualifier("exchangeAE") FanoutExchange exchangeAE){
        return  BindingBuilder.bind(queueAE).to(exchangeAE);
    }

    //绑定死信对列
    @Bean
    public Binding bindingExchangeDLX(@Qualifier("queueDLX")Queue queueAE, @Qualifier("exchangeDLX") TopicExchange exchangeDLX){
        return  BindingBuilder.bind(queueAE).to(exchangeDLX).with("dlx.*");
    }

    /**
     * 如果需要在生产者需要消息发送后的回调，
     * 需要对rabbitTemplate设置ConfirmCallback对象，
     * 由于不同的生产者需要对应不同的ConfirmCallback，
     * 如果rabbitTemplate设置为单例bean，
     * 则所有的rabbitTemplate实际的ConfirmCallback为最后一次申明的ConfirmCallback。
     * @return
     */
    @Bean
    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
    public RabbitTemplate rabbitTemplate() {
        RabbitTemplate template = new RabbitTemplate(connectionFactory);
        return template;
    }

}

四、发送消息类

package com.rabbitmq.producer;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.amqp.core.Message;
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.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.Date;
import java.util.UUID;

@Controller
public class HelloSender implements  RabbitTemplate.ConfirmCallback,RabbitTemplate.ReturnCallback{
    private static Logger log = LoggerFactory.getLogger(HelloSender.class);
    private RabbitTemplate rabbitTemplate;

   
    //构造方法注入     
    @Autowired
    public HelloSender(RabbitTemplate rabbitTemplate) {
        this.rabbitTemplate = rabbitTemplate;
        //这是是设置回调能收到发送到响应
        rabbitTemplate.setConfirmCallback(this);
        //如果设置备份队列则不起作用
        rabbitTemplate.setMandatory(true);
        rabbitTemplate.setReturnCallback(this);
    }

    @RequestMapping("/send")
    @ResponseBody
    public void send() {
        CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());
        String sendMsg = "hello1 " + new Date();
        System.out.println("Sender : " + sendMsg);
        //convertAndSend(exchange:交换机名称,routingKey:路由关键字,object:发送的消息内容,correlationData:消息ID)
        rabbitTemplate.convertAndSend("exchange.hello","helloKey", sendMsg,correlationId);
    }


    //回调确认
    @Override
    public void confirm(CorrelationData correlationData, boolean ack, String cause) {
        if(ack){
            log.info("消息发送成功:correlationData({}),ack({}),cause({})",correlationData,ack,cause);
        }else{
            log.info("消息发送失败:correlationData({}),ack({}),cause({})",correlationData,ack,cause);
        }
    }

    //消息发送到转换器的时候没有对列,配置了备份对列该回调则不生效
    @Override
    public void returnedMessage(Message message, int replyCode, String replyText, String exchange, String routingKey) {
        log.info("消息丢失:exchange({}),route({}),replyCode({}),replyText({}),message:{}",exchange,routingKey,replyCode,replyText,message);
    }



}

五、接收消息

package com.rabbitmq.consumer;

import com.rabbitmq.client.Channel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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;


@Component
public class HelloConsumer {
    private static Logger log = LoggerFactory.getLogger(HelloConsumer.class);

    @RabbitHandler
    @RabbitListener(queues = "queue.hello")
    public void process(Message message, Channel channel) throws IOException {
        log.info("receive: " + new String(message.getBody())+"《线程名：》"+Thread.currentThread().getName()+"《线程id:》"+Thread.currentThread().getId());
        channel.basicAck(message.getMessageProperties().getDeliveryTag(), true);
    }


}