SpringBoot配置Redis监听器

查找了一些后总结，个人食用。

1.导包

     
        
            org.springframework.boot
            spring-boot-starter-data-redis
        

2.配置类RedisConfig

@Configuration
public class RedisConfig {


    @Autowired
    private RedisConnectionFactory connectionFactory;

    @Bean
    RedisMessageListenerContainer redisMessageListenerContainer() {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        //container.addMessageListener(new RedisExpiredListener(), new PatternTopic("__keyevent@0__:expired"));
        return container;
    }

    // 创建基本的key监听器
    /*  */
    @Bean
    public RedisKeyChangeListener redisKeyChangeListener() throws Exception {
        RedisKeyChangeListener listener = new RedisKeyChangeListener(redisMessageListenerContainer(),"");
        return listener;
    }
}

3.配置监听器

/**
 * @description 期望是可以监听某个key的变化，而不是失效
 */
public class RedisKeyChangeListener implements MessageListener/* extends KeyspaceEventMessageListener */ {
    private final String listenerKeyName; // 监听的key的名称
    private static final Topic TOPIC_ALL_KEYEVENTS = new PatternTopic("__keyevent@*"); //表示只监听所有的key
    private static final Topic TOPIC_KEYEVENTS_SET = new PatternTopic("__keyevent@0__:set"); //表示只监听所有的key
    private static final Topic TOPIC_KEYNAMESPACE_NAME = new PatternTopic("__keyspace@0__:myKey"); // 不生效
    // 监控
    //private static final Topic TOPIC_KEYEVENTS_NAME_SET_USELESS = new PatternTopic("__keyevent@0__:set myKey");
    private String keyspaceNotificationsConfigParameter = "KEA";

    public RedisKeyChangeListener(RedisMessageListenerContainer listenerContainer, String listenerKeyName) {
        this.listenerKeyName = listenerKeyName;
        initAndSetRedisConfig(listenerContainer);
    }

    public void initAndSetRedisConfig(RedisMessageListenerContainer listenerContainer) {

        if (StringUtils.hasText(keyspaceNotificationsConfigParameter)) {

            RedisConnection connection = listenerContainer.getConnectionFactory().getConnection();

            try {

                Properties config = connection.getConfig("notify-keyspace-events");

                if (!StringUtils.hasText(config.getProperty("notify-keyspace-events"))) {
                    connection.setConfig("notify-keyspace-events", keyspaceNotificationsConfigParameter);
                }

            } finally {
                connection.close();
            }
        }
        // 注册消息监听
        listenerContainer.addMessageListener(this, TOPIC_ALL_KEYEVENTS);
    }

    @Reference
    private UserInfoApi userInfoApi;

    @Reference
    private FreezeApi freezeApi;

    @Override

    public void onMessage(Message message, byte[] pattern) {
      
        String key = new String(message.getBody());
        String method = new String(message.getChannel());
        
            System.out.println(key + "----" + method);

    }
}