【RabbitMQ】03-交换机

1. 交换机

2. Fanout交换机

广播。生产者向exchange发消息

java 复制代码
@SpringBootTest
public class SpringAmqpTest {
    @Autowired
    public RabbitTemplate rabbitTemplate;

    @Test
    void testSimple() {
        String exchangName = "hmall.fabout";
        rabbitTemplate.convertAndSend(exchangName, null,"hello, w");
    }
}

消费者监听exchange绑定的队列即可。

java 复制代码
@Component
@Slf4j
public class SpringAmqbListener {
    @Autowired
    RabbitTemplate rabbitTemplate;

    @RabbitListener(queues = "simple.queue")
    public void Lister(String msg) {
        log.info(msg);
    }

    @RabbitListener(queues = "fanout.q1")
    public void Lister1(String msg) {
        System.out.println("q1:" + msg);
    }

    @RabbitListener(queues = "fanout.q2")
    public void Lister2(String msg) {
        System.out.println("q2:" + msg);
    }
}

3. Direct 直连交换机

生产者,需要指定exchange和key

java 复制代码
@SpringBootTest
public class SpringAmqpTest {
    @Autowired
    public RabbitTemplate rabbitTemplate;

    @Test
    void testSimple() {
        String exchangName = "hmall.direct";
        rabbitTemplate.convertAndSend(exchangName, "yellow", "hello, w");
    }
}

消费者指定对列

java 复制代码
@Component
@Slf4j
public class SpringAmqbListener {
    @Autowired
    RabbitTemplate rabbitTemplate;

    @RabbitListener(queues = "simple.queue")
    public void Lister(String msg) {
        log.info(msg);
    }

    @RabbitListener(queues = "direct.q1")
    public void Lister1(String msg) {
        System.out.println("q1:" + msg);
    }

    @RabbitListener(queues = "direct.q2")
    public void Lister2(String msg) {
        System.out.println("q2:" + msg);
    }

    @RabbitListener(queues = "direct.q3")
    public void Lister3(String msg) {
        System.out.println("q3" + msg);
    }
}

4. Topic交换机

生产者

java 复制代码
@SpringBootTest
public class SpringAmqpTest {
    @Autowired
    public RabbitTemplate rabbitTemplate;

    @Test
    void testSimple() {
        String exchangName = "hmall.topic";
        rabbitTemplate.convertAndSend(exchangName, "china.news", "hello, w");
    }
}

消费者

java 复制代码
    @RabbitListener(queues = "topic.q1")
    public void topicLister1(String msg) {
        System.out.println("q1:" + msg);
    }

    @RabbitListener(queues = "topic.q2")
    public void topicLister2(String msg) {
        System.out.println("q2:" + msg);
    }

5. 代码生成交换机

基于注解绑定,在消费者的@Component中写。

java 复制代码
 	@RabbitListener(bindings = @QueueBinding(
            value = @Queue(name = "direct.queue1"),
            exchange = @Exchange(name = "hmall.direct", type = ExchangeTypes.DIRECT),
            key = {"red", "yellow"}
    ))
    public void topicLister1(String msg) {
        System.out.println("q1:" + msg);
    }

    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(name = "direct.queue2"),
            exchange = @Exchange(name = "hmall.direct", type = ExchangeTypes.DIRECT),
            key = {"red", "yellow"}
    ))
    public void topicLister2(String msg) {
        System.out.println("q2:" + msg);
    }

6. 修改默认序列化器

  1. 依赖
java 复制代码
        <!--jackson-->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
        </dependency>
  1. 注册为Bean
java 复制代码
    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }
相关推荐
掘金-我是哪吒31 分钟前
分布式微服务系统架构第169集:1万~10万QPS的查当前订单列表
分布式·微服务·云原生·架构·系统架构
Zhao_yani42 分钟前
RabbitMQ相关知识
分布式·rabbitmq
我就是全世界1 小时前
【存储选型终极指南】RustFS vs MinIO:5大维度深度对决,95%技术团队的选择秘密!
开发语言·分布式·rust·存储
楠枬3 小时前
zookeeper 实现分布式锁
分布式·zookeeper
milanyangbo6 小时前
“卧槽,系统又崩了!”——别慌,这也许是你看过最通俗易懂的分布式入门
分布式·后端·云原生·架构
失散136 小时前
分布式专题——1.1 Redis单机、主从、哨兵、集群部署
java·数据库·redis·分布式·架构
你我约定有三8 小时前
软件启动时加配置文件 vs 不加配置文件
java·分布式·zookeeper
励志成为糕手10 小时前
ZooKeeper架构深度解析:分布式协调服务的核心设计与实现
大数据·分布式·zookeeper·架构·一致性
瑞瑞绮绮12 小时前
分布式事务的Java实践
java·分布式·springcloud
孤独的复仇者12 小时前
RabbitMQ高级:延迟消息
分布式·rabbitmq