RabbitMQ work模型Demo

启动RabbitMQ服务

1. 启用管理工具

   

2. 输入 rabbitmq-plugins enable rabbitmq_management 启动管理工具

   net stop RabbitMQ  // 停止
   net start RabbitMQ  // 启动
   

3. 查看http://127.0.0.1:15672

   默认账号密码:guest/guest

4. 创建user vhost(虚拟主机) 队列

项目中使用RabbitMQ

引入依赖

        <!--RabbitMQ依赖-->
        <dependency>
            <groupId>org.springframework.amqp</groupId>
            <artifactId>spring-rabbit</artifactId>
        </dependency>

配置RabbitMQ连接信息

# RabbitMQ
spring.rabbitmq.host=127.0.0.1
spring.rabbitmq.port=5672
spring.rabbitmq.username=test
spring.rabbitmq.password=123456
spring.rabbitmq.virtual-host=onlinedevice

生产者

生产者生产消息可分为3个部分,分别为Header Properties payload

Properties只能设置指定的字段

@Service 
public class OnlinedeviceProducer implements Runnable{
    @Autowired
    public RabbitTemplate rabbitTemplate;  // 创建RabbitTemplate对象

    String payload = "testPayload"  // 负载

    public void onlinedeviceProducer() throws InterruptedException {

        MessageProperties messageProperties = new MessageProperties();
        messageProperties.setType("Login");  // 设置Properties

        Message message = new Message(payload.getBytes(StandardCharsets.UTF_8),messageProperties);
            // 简单情况下,routingKey即为队列名
            rabbitTemplate.convertAndSend("q_deviceonline",message); // 发送的消息带有Properties
      		rabbitTemplate.convertAndSend("work",payLoad);   // 只有payload
        }
    }

消费者

单线程消费者

// 简单消费者,绑定队列即可    
@RabbitListener(queues = "work")
    public void testWorkConsumer2(String payload){
        System.out.println(payload);
    }

多线程的消费者

1. 编写RabbitMQ配置类

   @Configuration
   public class RabbitMQConfig {
       // 获取在配置文件中定义的最大和当前线程数
       @Value("${spring.currentConsumers}")
       public int currentConsumers;
       @Value("${spring.maxConsumers}")
       public int maxConsumers;
   
       // 配置批量监听容器
       @Bean("customContainerFactory")
       public SimpleRabbitListenerContainerFactory containerFactory(SimpleRabbitListenerContainerFactoryConfigurer configurer, ConnectionFactory connectionFactory) {
           SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
           factory.setConcurrentConsumers(currentConsumers);  //设置线程数
           factory.setMaxConcurrentConsumers(maxConsumers); //设置最大线程数
           configurer.configure(factory, connectionFactory);
           return factory;
       }
   }
   

2. 在消费者中使用自定义的ContainerFactory

       @RabbitListener(queues = "test.devOnlineStatus", containerFactory = "customContainerFactory")
       public void receiverData1(String data, Message message) throws ParseException {
           
           String deviceAction = message.getMessageProperties().getType();
           
            System.out.println(deviceAction);
            System.out.println(data);
       }
   }