【RabbitMQ】springboot用例（十）

Topic模式

生产者

@Configuration
public class RabbitMqTopicConfiguration {

    // 1、声明 Topic 交换机
    @Bean
    public TopicExchange topicExchange() {
        return new TopicExchange(Constants.TOPIC_EXCHANGE_NAME, true, false);
    }
    // 2、声明队列

    @Bean(Constants.QUEUE_TOPIC_QUEUE3)
    public Queue queue3() {
        return new Queue(Constants.QUEUE_TOPIC_QUEUE3);
    }

    @Bean(Constants.QUEUE_TOPIC_QUEUE4)
    public Queue queue4() {
        return new Queue(Constants.QUEUE_TOPIC_QUEUE4);
    }

    @Bean(Constants.QUEUE_TOPIC_QUEUE5)
    public Queue queue5() {
        return new Queue(Constants.QUEUE_TOPIC_QUEUE5);
    }

    // 3、绑定队列
    @Bean("queue3Binding")
    public Binding queue1Binding() {
        return BindingBuilder.bind(queue3()).to(topicExchange()).with("#.orange.*");
    }
    @Bean("queue4Binding")
    public Binding queue4Binding() {
        return BindingBuilder.bind(queue4()).to(topicExchange()).with("lazy.#");
    }
    @Bean("queue5Binding")
    public Binding queue5Binding() {
        return BindingBuilder.bind(queue5()).to(topicExchange()).with("*.*.rabbit");
    }
}

@Service
public class TopicSendMsgService {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    public void sendMsg(String msg, String routingKey) {
        rabbitTemplate.convertAndSend(Constants.TOPIC_EXCHANGE_NAME, routingKey, msg);
    }
}

消费

@Component
@RabbitListener(queues = Constants.QUEUE_TOPIC_QUEUE3)
public class TopicQueue3MsgListener {
    
    @RabbitHandler
    public void receiveQueue3Msg(String message) {
        try {
            System.out.println("receiveQueue3Msg ====>>> " + message);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}