一. 一些基本概念

消息队列

面试官问你什么是消息队列？把这篇甩给他！

RabbitMQ

RabbitMQ-简书
柯南君：看大数据时代下的IT架构（2）消息队列之RabbitMQ-基础概念详细介绍

AMQP

AMQP 协议详解-简书

二.依赖和配置

引入rabbitmq相关依赖

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-amqp</artifactId>
</dependency>

相关配置

spring.rabbitmq.host=localhost
spring.rabbitmq.port=5276
spring.rabbitmq.username=guest
speing.rabbitmq.password=guest

三、使用样例1（Direct Exchange）

配置Direct Exchange

@Configuration
public class RabbitDirectConfig {
     public static final String DIRECTNAME = "yzh-direct";
     @Bean
     Queue queue(){return new Queue("hello-queue");}
     @Bean
     DirectExchange directExchange(){
          return new DirectExchange(DIRECTNAME,true,false);
     }
     @Bean
     Binding binding(){
          return BindingBuilder.bind(queue()).to(directExchange()).with("direct");
     }
}

配置消费者

@Component
public class DirectReceiver {
      @RabbitListener(queues="hello-queue")
      public void handler1(String msg){
            System.out.println("DirectReceiver:handler1:" + msg);
      }
}

测试

注入RabbitTemplate来发送消息

@Autowired
RabbitTemplate rabbitTemplate;

@Test
void contextLoads() {
    rabbitTemplate.convertAndSend("hello-queue","Hello yzh!");
}

启动项目，运行测试方法

捕获.PNG

四、使用样例2（Fanout Exchange）

配置Fanout Exchange

@Configuration
public class RabbitFanoutConfig() {
      public static final String FanoutNAME = "yzh-fanout";
      @Bean
      FanoutExchange fanoutExchange(){
            return new FanoutExchange(FanoutNAME,true,false)
      }

      @Bean
      Queue queueOne(){return new Queue("queue-one");}
      @Bean
      Queue queueTwo(){return new Queue("queue-two");}
      
      @Bean
      Binding bindingOne(){
            return new BindingBuilder.bind(queueOne()).to(fanoutExchange());
      }
      @Bean
      Binding bindingTwo(){
            return new BindingBuilder.bind(queueTwo()).to(fanoutExchange());
      }
}

配置消费者

@Component
public class FanoutReceiver{
      @RabbitListener(queues = "queue-one")
      public void handler1(String msg){
            System.out.println("FanoutReceiver:handler1:" + msg);
      }
      @RabbitListener(queues = "queue-two")
      public void handler2(String msg){
        System.out.println("FanoutReceiver:handler2:" + msg);
      }
}

测试

@Test
void test1(){
    rabbitTemplate.convertAndSend(RabbitFanoutConfig.FANOUTNAME,null,"Hello yzh!哈哈哈");
}

捕获.PNG