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
@Bean
public Queue TestDirectQueue(){
return new Queue("TestDirectQueue",true);
}
//交换机
@Bean
DirectExchange TestDirectExchange(){
return new DirectExchange("TestDirectExchange",true,false);
}
//绑定
@Bean
Binding 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 {
@Autowired
private 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TestDirectExchange
rabbitTemplate.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 {
@RabbitHandler
public 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";
@Bean
public Queue firstQueue() {
//return new Queue(TopicRabbitConfigTest.man);
return new Queue("firstQueue");
}
@Bean
public Queue secondQueue() {
//return new Queue(TopicRabbitConfigTest.woman);
return new Queue("secondQueue");
}
@Bean
TopicExchange 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
@Bean
Binding 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
@Bean
Binding 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 {
@Autowired
private 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 {
@RabbitHandler
public 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 {
@RabbitHandler
public 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
*/
@Bean
public Queue queueA() {
return new Queue("fanout.A");
}
@Bean
public Queue queueB() {
return new Queue("fanout.B");
}
@Bean
public Queue queueC() {
return new Queue("fanout.C");
}
@Bean
FanoutExchange fanoutExchange() {
return new FanoutExchange("fanoutExchange");
}
@Bean
Binding bindingExchangeA() {
return BindingBuilder.bind(queueA()).to(fanoutExchange());
}
@Bean
Binding bindingExchangeB() {
return BindingBuilder.bind(queueB()).to(fanoutExchange());
}
@Bean
Binding bindingExchangeC() {
return BindingBuilder.bind(queueC()).to(fanoutExchange());
}
}发送消息，访问这个接口就行。
@Controller
public class FanoutTest003 {
@Autowired
private 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 {
@RabbitHandler
public 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 {
@RabbitHandler
public 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 {
@RabbitHandler
public 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
重点：直连交换机不管绑定多少个队列，消息会到达所有队列，然后去消费者方进行轮询。