Springboot使用redisson + 自定义注解实现消息的发布订阅(解决方案)

// 创建Redisson客户端
RedissonClient redisson = Redisson.create();
// 获取RTopic对象
RTopic<String> topic = redisson.getTopic("myTopic");
// 发布消息
topic.publish("Hello, Redisson!");
// 添加监听器
topic.addListener(String.class, (channel, msg) -> {
    System.out.println("Received message: " + msg);
});
// 关闭Redisson客户端
redisson.shutdown();

        <dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson-spring-boot-starter</artifactId>
            <version>3.14.1</version>
        </dependency>

redis:
  sdk:
    config:
      host: localhost
      port: 6379
      pool-size: 10
      min-idle-size: 5
      idle-timeout: 30000
      connect-timeout: 5000
      retry-attempts: 3
      retry-interval: 1000
      ping-interval: 60000
      keep-alive: true

/**
 * @description redis连接配置
 * @create 2023/12/17 20:48:13
 */
@Data
@ConfigurationProperties(prefix = "redis.sdk.config", ignoreInvalidFields = true)
public class RedissonCientConfigProperties {
    /** host:ip */
    private String host;
    /** 端口 */
    private int port;
    /** 账密 */
    private String password;
    /** 设置连接池的大小，默认为64 */
    private int poolSize = 64;
    /** 设置连接池的最小空闲连接数，默认为10 */
    private int minIdleSize = 10;
    /** 设置连接的最大空闲时间（单位：毫秒），超过该时间的空闲连接将被关闭，默认为10000 */
    private int idleTimeout = 10000;
    /** 设置连接超时时间（单位：毫秒），默认为10000 */
    private int connectTimeout = 10000;
    /** 设置连接重试次数，默认为3 */
    private int retryAttempts = 3;
    /** 设置连接重试的间隔时间（单位：毫秒），默认为1000 */
    private int retryInterval = 1000;
    /** 设置定期检查连接是否可用的时间间隔（单位：毫秒），默认为0，表示不进行定期检查 */
    private int pingInterval = 0;
    /** 设置是否保持长连接，默认为true */
    private boolean keepAlive = true;
}

/**
 * @description redisson 消息主题注解
 * @create 2023/12/17 21:56:10
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
@Documented
public @interface RedisTopic {
    // 主题名称
    String topic() default "";
}

/**
 * @description redis客户端
 * @create 2023/12/17 20:49:41
 */
@Configuration
@EnableConfigurationProperties(RedisCientConfigProperties.class)
public class RedisClientConfig {
     public RedissonClient redissonClient(ConfigurableApplicationContext applicationContext, RedisCientConfigProperties properties) {
        Config config = new Config();
        config.useSingleServer()
                .setAddress("redis://" + properties.getHost() + ":" + properties.getPort())
               .setPassword(properties.getPassword())
                .setConnectionPoolSize(properties.getPoolSize())
                .setConnectionMinimumIdleSize(properties.getMinIdleSize())
                .setIdleConnectionTimeout(properties.getIdleTimeout())
                .setConnectTimeout(properties.getConnectTimeout())
                .setRetryAttempts(properties.getRetryAttempts())
                .setRetryInterval(properties.getRetryInterval())
                .setPingConnectionInterval(properties.getPingInterval())
                .setKeepAlive(properties.isKeepAlive())
        ;
        RedissonClient redissonClient = Redisson.create(config);
        // 注册消息发布订阅主题Topic
        // 找到所有实现了Redisson中MessageListener接口的bean名字
        String[] beanNamesForType = applicationContext.getBeanNamesForType(MessageListener.class);
        for (String beanName : beanNamesForType) {
            // 通过bean名字获取到监听bean
            MessageListener bean = applicationContext.getBean(beanName, MessageListener.class);
            Class<? extends MessageListener> beanClass = bean.getClass();
            // 如果bean的注解里包含我们的自定义注解RedisTopic.class，则以RedisTopic注解的值作为name将该bean注册到bean工厂，方便在别处注入
            if (beanClass.isAnnotationPresent(RedisTopic.class)) {
                RedisTopic redisTopic = beanClass.getAnnotation(RedisTopic.class);
                RTopic topic = redissonClient.getTopic(redisTopic.topic());
                topic.addListener(String.class, bean);
                ConfigurableListableBeanFactory beanFactory = applicationContext.getBeanFactory();
                beanFactory.registerSingleton(redisTopic.topic(), topic);
            }
        }
        return redissonClient;
    }
}

@Slf4j
@Service
@RedisTopic(topic = "testRedisTopic02")
public class RedisTopicListener02 implements MessageListener<String> {
    @Override
    public void onMessage(CharSequence channel, String msg) {
        log.info("02-监听消息(Redis 发布/订阅): {}", msg);
    }
}

@Slf4j
@Repository
public class OrderRepository implements IOrderRepository {
    @Resource(name = "testRedisTopic02")
    private RTopic testRedisTopic02;
    @Resource(name = "testRedisTopic03")
    private RTopic testRedisTopic03;
    @Override
    public String createOrder(OrderAggregate orderAggregate) {
        // 向  testRedisTopic02 发布消息
        testRedisTopic02.publish(JSON.toJSONString(orderEntity));
        // 向  testRedisTopic03 发布消息
        testRedisTopic03.publish(JSON.toJSONString(orderEntity));
        return orderId;
    }    
}