rabbitmq的三个交换机及简单使用

提前说一下，创建队列，交换机，绑定交换机和队列都是在生产者。消费者只负责监听就行了，不用配其他的。

完成这个场景需要两个服务哦。

1直连交换机-生产者的代码。

在配置类中创建队列，交换机，绑定交换机和队列

@Configuration
public class DirectRabbitConfigTest {//队列@Beanpublic Queue TestDirectQueue(){return new Queue("TestDirectQueue",true);}//交换机@BeanDirectExchange TestDirectExchange(){return new DirectExchange("TestDirectExchange",true,false);}//绑定@BeanBinding bindingDirect(){return BindingBuilder.bind(TestDirectQueue()).to(TestDirectExchange()).with("TestDirectRouting");//TestDirectRouting为路由键}
}

发送消息，访问这个接口就行。

@Controller
public class test001 {@Autowiredprivate RabbitTemplate rabbitTemplate;@ResponseBody@GetMapping("/sendDirectMessage")public String sendDirectMessage() {String messageId = String.valueOf(UUID.randomUUID());String messageData = "test message, hello!";String createTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));Map<String,Object> map=new HashMap<>();map.put("messageId",messageId);map.put("messageData",messageData);map.put("createTime",createTime);//将消息携带绑定键值：TestDirectRouting 发送到交换机TestDirectExchangerabbitTemplate.convertAndSend("TestDirectExchange", "TestDirectRouting", map);return "ok";}
}

2直连交换机-消费者的代码

@Component
@RabbitListener(queues = "TestDirectQueue")//监听的队列
public class DirectReceiver {@RabbitHandlerpublic void process(Map testMessage){System.out.println("消息one:"+testMessage.toString());//这个map就是发送的消息}
}

直连交换机总结：你可以自己加几个消费者，发送消息你会发现消息被轮询了。

访问@GetMapping("/sendDirectMessage")消息就发出并被接收。

3topic交换机-生产者的代码

注意：需要自己去控制台添加firstQueue和secondQueue队列，不然消费者启动不起来。原因未知，在直连交换机的时候机器自己创建队列了，topic不知道为啥不行。

@Configuration
public class TopicRabbitConfigTest {//绑定键public final static String man = "topic.man";public final static String woman = "topic.woman";@Beanpublic Queue firstQueue() {//return new Queue(TopicRabbitConfigTest.man);return new Queue("firstQueue");}@Beanpublic Queue secondQueue() {//return new Queue(TopicRabbitConfigTest.woman);return new Queue("secondQueue");}@BeanTopicExchange exchange() {return new TopicExchange("topicExchange");}//将firstQueue和topicExchange绑定,而且绑定的键值为topic.man//这样只要是消息携带的路由键是topic.man,才会分发到该队列@BeanBinding bindingExchangeMessage() {return BindingBuilder.bind(firstQueue()).to(exchange()).with(man);}//将secondQueue和topicExchange绑定,而且绑定的键值为用上通配路由键规则topic.#// 这样只要是消息携带的路由键是以topic.开头,都会分发到该队列@BeanBinding bindingExchangeMessage2() {return BindingBuilder.bind(secondQueue()).to(exchange()).with("topic.#");}}

发送消息，访问这两个接口就行。

@Controller
public class TopicTest002 {@Autowiredprivate RabbitTemplate rabbitTemplate;@GetMapping("/sendTopicMessage1")public String sendTopicMessage1() {String messageId = String.valueOf(UUID.randomUUID());String messageData = "message: M A N ";String createTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));Map<String, Object> manMap = new HashMap<>();manMap.put("messageId", messageId);manMap.put("messageData", messageData);manMap.put("createTime", createTime);rabbitTemplate.convertAndSend("topicExchange", "topic.man", manMap);return "ok";}@GetMapping("/sendTopicMessage2")public String sendTopicMessage2() {String messageId = String.valueOf(UUID.randomUUID());String messageData = "message: woman is all ";String createTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));Map<String, Object> womanMap = new HashMap<>();womanMap.put("messageId", messageId);womanMap.put("messageData", messageData);womanMap.put("createTime", createTime);rabbitTemplate.convertAndSend("topicExchange", "topic.woman", womanMap);return "ok";}
}

4topic交换机-消费者的代码

需要监听两个队列

@Component
@RabbitListener(queues = "firstQueue")//监听的队列
public class TopicManReceiver {@RabbitHandlerpublic void process(Map testMessage) {System.out.println("TopicManReceiver消费者收到消息  : " + testMessage.toString());}}

@Component
@RabbitListener(queues = "secondQueue")//监听的队列
public class TopicWoManReceiver {@RabbitHandlerpublic void process(Map testMessage) {System.out.println("TopicTotalReceiver消费者收到消息  : " + testMessage.toString());}}

先访问@GetMapping("/sendTopicMessage1")接口，再访@GetMapping("/sendTopicMessage2")接口，结果如下：

总结：绑定和发送的时候都要设置路由键。

5fanout交换机-生产者

注意：这种交换机也需要自己去控制台创建队列。fanout交换机不需要设置路由key

@Configuration
public class FanoutRabbitConfigTest {/***  创建三个队列 ：fanout.A   fanout.B  fanout.C*  将三个队列都绑定在交换机 fanoutExchange 上*  因为是扇型交换机, 路由键无需配置,配置也不起作用*/@Beanpublic Queue queueA() {return new Queue("fanout.A");}@Beanpublic Queue queueB() {return new Queue("fanout.B");}@Beanpublic Queue queueC() {return new Queue("fanout.C");}@BeanFanoutExchange fanoutExchange() {return new FanoutExchange("fanoutExchange");}@BeanBinding bindingExchangeA() {return BindingBuilder.bind(queueA()).to(fanoutExchange());}@BeanBinding bindingExchangeB() {return BindingBuilder.bind(queueB()).to(fanoutExchange());}@BeanBinding bindingExchangeC() {return BindingBuilder.bind(queueC()).to(fanoutExchange());}}

发送消息，访问这个接口就行。

@Controller
public class FanoutTest003 {@Autowiredprivate RabbitTemplate rabbitTemplate;@GetMapping("/sendFanoutMessage")public String sendFanoutMessage() {String messageId = String.valueOf(UUID.randomUUID());String messageData = "message: testFanoutMessage ";String createTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));Map<String, Object> map = new HashMap<>();map.put("messageId", messageId);map.put("messageData", messageData);map.put("createTime", createTime);rabbitTemplate.convertAndSend("fanoutExchange", null, map);return "ok";}}

6fanout交换机-消费者

@Component
@RabbitListener(queues = "fanout.A")//监听的队列
public class FanoutA {@RabbitHandlerpublic void process(Map testMessage) {System.out.println("FanoutReceiverA消费者收到消息  : " +testMessage.toString());}
}

@Component
@RabbitListener(queues = "fanout.B")//监听的队列
public class FanoutB {@RabbitHandlerpublic void process(Map testMessage) {System.out.println("FanoutReceiverB消费者收到消息  : " +testMessage.toString());}}

@Component
@RabbitListener(queues = "fanout.C")//监听的队列
public class FanoutC {@RabbitHandlerpublic void process(Map testMessage) {System.out.println("FanoutReceiverC消费者收到消息  : " +testMessage.toString());}}

总结：三个消费者都收到了消息