spring boot redis中的key失效监听的问题解决

1、spring boot连接配置Redis参考这篇文章

https://www.jb51.net/program/339977yti.htm

2、首先开启redis的事件失效推送功能，如果是redis容器启动，参考下面的方式启动容器

docker run --restart=always -itd --name redis -p 6379:6379 redis redis-server --notify-keyspace-events Ex --requirepass xxxxxx

然后在redis客户端下面使用如下方式验证

CONFIG GET notify-keyspace-events

3、在spring boot 中新建服务类RedisKeyExpirationListener，用于捕捉获取redis中的key失效

package com.example.redis_sub.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.listener.KeyExpirationEventMessageListener;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.stereotype.Component;

@Slf4j
@Component
public class RedisKeyExpirationListener extends KeyExpirationEventMessageListener {
    public RedisKeyExpirationListener(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
    }

    @Override
    public void onMessage(Message message, byte[] pattern) {
        // 用户做自己的业务处理即可,注意message.toString()可以获取失效的key
        System.out.println("key失效");
        StBEzrQMfRGring expiredKey = message.toString();
        System.out.println(expiredKey);
        System.out.println(new String(pattern));
        //业务逻http://www.devze.com辑

    }
}

4、新建配置类RedisConfig

package com.example.redis_sub.config;

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 {

    @Bean
    RedisMessageListenerContainephpr container(RedisConnectionFactory connectionFactory) {

        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        androidcontainer.setConnectionFactory(cophpnnectionFactory);
        // 事件以__keyevent@<db>__为前缀进行发布
//        container.addMessageListener(new RedisKeyExpirationListener(container), new PatternTopic("__keyevent@0__" +
//                ":expired"));
        container.addMessageListener(new RedisKeyExpirationListener(container), new PatternTopic("__keyevent@0__" +
                ":expired"));
        return container;
    }


}

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