1. 概述
老话说的好：做人要懂得变通，善于思考，有时稍微转个弯，也许问题就解决了。

言归正传，之前我们聊了 RabbitMQ 3.9.7 镜像模式集群的搭建，今天我们来聊聊 RabbitMQ 3.9.7 镜像模式集群与Springboot 2.5.5 整合。

2. 场景说明
服务器A IP：192.168.1.22

服务器B IP：192.168.1.8

服务器C IP：192.168.1.144

此三台服务器上已搭建好了 RabbitMQ镜像模式集群，镜像模式集群的搭建，可参见我的上一篇文章。

3. 与Springboot的整合

3.1 引入依赖
<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
<dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-amqp</artifactId>
       </dependency>

Java技术迷

3.2 生产服务配置
spring:
  rabbitmq:
    addresses: 192.168.1.22:5672,192.168.1.8:5672,192.168.1.144:5672
    username: guest
    password: guest
    virtual-host: /
    connection-timeout: 16000
 
    # 启用消息确认模式
    publisher-confirm-type: correlated
 
    # 启用 return 消息模式
    publisher-returns: true
    template:
      mandatory: true

3.3 生产服务代码
import org.springframework.amqp.AmqpException;
import org.springframework.amqp.core.MessagePostProcessor;
import org.springframework.amqp.rabbit.connection.CorrelationData;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.stereotype.Component;
 
import java.util.Map;
 
@Component
public class Producer {
 
    @Autowired
    private RabbitTemplate rabbitTemplate;
 
    /**
     * 确认回调
     */
    final RabbitTemplate.ConfirmCallback confirmCallback = new RabbitTemplate.ConfirmCallback() {
 
        @Override
        public void confirm(CorrelationData correlationData, boolean ack, String cause) {
            // correlationData 唯一标识
            // ack mq是否收到消息
            // cause 失败原因
            System.out.println("correlationData：" + correlationData.getId());
            System.out.println("ack：" + ack);
            System.out.println("cause：" + cause);
 
        }
    };
 
    /**
     * 发送消息
     * @param messageBody   消息体
     * @param headers       附加属性
     * @throws Exception
     */
    public void sendMessage(String messageBody, Map<String, Object> headers, String id) throws Exception {
 
        MessageHeaders messageHeaders = new MessageHeaders(headers);
 
        Message<String> message = MessageBuilder.createMessage(messageBody, messageHeaders);
 
        rabbitTemplate.setConfirmCallback(confirmCallback);
 
        String exchangeName = "exchange-hello";
        String routingKey = "test.123";
 
        CorrelationData correlationData = new CorrelationData(id);
 
        rabbitTemplate.convertAndSend(exchangeName, routingKey, message, new MessagePostProcessor() {
 
            /**
             * 发送消息后做的事情
             * @param message
             * @return
             * @throws AmqpException
             */
            @Override
            public org.springframework.amqp.core.Message postProcessMessage(org.springframework.amqp.core.Message message) throws AmqpException {
                return message;
            }
        }, correlationData);
    }
}

3.4 消费服务配置
spring:
  rabbitmq:
    addresses: 192.168.1.22:5672,192.168.1.8:5672,192.168.1.144:5672
    username: guest
    password: guest
    virtual-host: /
    connection-timeout: 16000
 
    listener:
      simple:
        # 设置为手工ACK
        acknowledge-mode: manual
        concurrency: 5
        prefetch: 1
        max-concurrency: 10

3.5 消费服务代码
import com.rabbitmq.client.Channel;
import org.springframework.amqp.rabbit.annotation.*;
import org.springframework.amqp.support.AmqpHeaders;
import org.springframework.messaging.Message;
import org.springframework.stereotype.Component;
 
@Component
public class Consumer {
 
    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(value = "queue-hello", durable = "true"),
            exchange = @Exchange(value = "exchange-hello" , durable = "true", type = "topic"),
            key = "test.*"
    ))
    @RabbitHandler
    public void onMessage(Message message, Channel channel) throws Exception {
 
        System.out.println("收到消息：" + message.getPayload());
 
        Long deliveryTag = (Long)message.getHeaders().get(AmqpHeaders.DELIVERY_TAG);
        channel.basicAck(deliveryTag, false);
    }
}

3.6 Rest 测试代码
@RestController
@RequestMapping("/mq")
public class RabbitmqController {
 
    @Autowired
    private Producer producer;
 
    @GetMapping("/sendMessage")
    public String sendMessage(@RequestParam String messageBody, @RequestParam String id) throws Exception {
        Map<String, Object> headers = new HashMap<>();
        producer.sendMessage(messageBody, headers, id);
        return "success";
    }
}

4. 综述
到此这篇关于RabbitMQ 3.9.7 镜像模式集群与Springboot 2.5.5 整合的文章就介绍到这了