使用Spring Boot实现Redis键过期回调功能示例详解

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

spring:
  redis:
    host: localhost
    port: 6379
    password: 
    database: 0

import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.connection.MessageListener;
import org.springframework.stereotype.Component;
@Component
public class RedisKeyExpirationListener implements MessageListener {
    @Override
    public void onMessage(Message message, byte[] pattern) {
        String expiredKey = message.toString();
        // 在这里添加你的业务逻辑，比如清除相关数据或发送通知
        System.out.println("键过期：" + expiredKey);
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.listener.PatternTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
@Configuration
public class RedisConfig {
    private final RedisConnectionFactory redisConnectionFactory;
    @Autowired
    public RedisConfig(RedisConnectionFactory redisConnectionFactory) {
        this.redisConnectionFactory = redisConnectionFactory;
    }
    @Bean
    public RedisMessageListenerContainer redisMessageListenerContainer() {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(redisConnectionFactory);
        container.addMessageListener(redisKeyExpirationListener(), new PatternTopic("__keyevent@*__:expired"));
        return container;
    }
    @Bean
    public RedisKeyExpirationListener redisKeyExpirationListener() {
        return new RedisKeyExpirationListener();
    }
}