引入redis依赖

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

配置类编写

import com.alibaba.fastjson.support.spring.FastJsonRedisSerializer;
import com.bwss.ai.common.listener.RedisKeyExpireListener;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.listener.PatternTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.listener.adapter.MessageListenerAdapter;
import org.springframework.data.redis.serializer.StringRedisSerializer;import javax.annotation.Resource;/*** @Description redis配置**/
@Configuration
@ConditionalOnClass(RedisOperations.class)
@EnableConfigurationProperties(RedisProperties.class)
public class RedisConfig
{@Resourceprivate RedisKeyExpireListener redisListen;@Bean@ConditionalOnMissingBean(name = "redisTemplate")public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory){RedisTemplate<Object, Object> template = new RedisTemplate<>();//使用fastjson序列化FastJsonRedisSerializer<Object> fastJsonRedisSerializer = new FastJsonRedisSerializer<>(Object.class);// value值的序列化采用fastJsonRedisSerializertemplate.setValueSerializer(fastJsonRedisSerializer);template.setHashValueSerializer(fastJsonRedisSerializer);// key的序列化采用StringRedisSerializertemplate.setKeySerializer(new StringRedisSerializer());template.setHashKeySerializer(new StringRedisSerializer());template.setConnectionFactory(redisConnectionFactory);return template;}@Bean@ConditionalOnMissingBean(StringRedisTemplate.class)public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory redisConnectionFactory){StringRedisTemplate template = new StringRedisTemplate();template.setConnectionFactory(redisConnectionFactory);return template;}/*** 开启监听redis Key过期事件*/@Beanpublic RedisMessageListenerContainer redisMessageListenerContainer(RedisConnectionFactory connectionFactory){RedisMessageListenerContainer container = new RedisMessageListenerContainer();container.setConnectionFactory(connectionFactory);container.addMessageListener(redisListen, new PatternTopic("__keyevent@*__:expired"));return container;}
}

监听类编写

import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.connection.MessageListener;
import org.springframework.stereotype.Component;/*** @Description redis过期监听器**/
@Slf4j
@Component
public class RedisKeyExpireListener implements MessageListener {@Overridepublic void onMessage(Message message, byte[] pattern){String expireKey = message.toString();// 根据过期的key处理对应的业务逻辑log.info(expireKey + "已过期-------------------");}
}

redis配置文件修改

修改redis.conf配置文件，找到 EVENT NOTIFICATION （事件通知）这个配置（默认关闭），这个好像要搞版本才能使用

notify-keyspace-events Ex

测试

 // 将更新状态存放进redis
String logKey = "test"
redisTemplate.opsForValue().set(logKey, "",30, TimeUnit.SECONDS);