在direct模式基础上改，但是此次使用注解方式

消费者

修改对应的consumer，用注解方式定义交换机和队列的关系

@Service
@RabbitListener(bindings = @QueueBinding(
        value = @Queue(value = "duanxin.topic.queue",durable = "true",autoDelete = "false"),
        exchange = @Exchange(value = "topic_order_exchange",type = ExchangeTypes.TOPIC),
        key = "#.duanxin.#"
))
public class TopicDuanxinConsumer {

    @RabbitHandler
    public void receiveMsg(String msg){
        System.out.println("TopicDuanxinConsumer ---接收到的订单信息是：->" + msg);
    }
}

@Service
@RabbitListener(bindings = @QueueBinding(
        value = @Queue(value = "email.topic.queue",durable = "true",autoDelete = "false"),
        exchange = @Exchange(value = "topic_order_exchange",type = ExchangeTypes.TOPIC),
        key = "*.email.#"
))
public class TopicEmailConsumer {

    @RabbitHandler
    public void receiveMsg(String msg){
        System.out.println("TopicEmailConsumer ---接收到的订单信息是：->" + msg);
    }
}

@Service
@RabbitListener(bindings = @QueueBinding(
        value = @Queue(value = "sms.topic.queue",durable = "true",autoDelete = "false"),
        exchange = @Exchange(value = "topic_order_exchange",type = ExchangeTypes.TOPIC),
        key = "com.#"
))
public class TopicSmsConsumer {

    @RabbitHandler
    public void receiveMsg(String msg){
        System.out.println("TopicSmsConsumer ---接收到的订单信息是：->" + msg);
    }
}

• 启动SpringbootOrderRabbitmqConsumerApplication，查看交换机队列是否绑定成功
  
  
  

生产者

只需要定义路由规则即可#是任意个，可以有多个，可以有一个，也可以没有；*最少有一个

    public void makeOrderTopic(String userId,String productId,int num){

        String orderId = UUID.randomUUID().toString();
        System.out.println("订单生成成功：" + orderId);

        String exchangeName = "topic_order_exchange";
        String routingKey = "com.duanxin";
        //@param1 交换机 @param2 路由key/queue队列名称 @param3 消息内容
        rabbitTemplate.convertAndSend(exchangeName,routingKey,orderId);
    }

• 运行测试类

@Test
void contextLoads2() {
   orderService.makeOrderTopic("1","1",12);
}

同时客户端也可以收到，当然再次发送也可以收到。

针对于注解方式

虽然简洁，但是还是推荐配置类方式，毕竟各有多爱，另外配置类推荐写在客户端。