springboot同时使用redis的0和1数据库，1号数据库用于保存session，添加过期监听

项目中使用的了redis的0号数据库，现在要求在客户端离线时给客户通知，离线的判断是时间大于某个值，解决方法使用redis的过期监听功能实现这个功能，但是0号数据库已经使用中，为了不监听过多的过期事件，启用1号数据库，下面就上代码：

application.yml配置，其中database1是我自定义的，用于判断是否启用1号数据库：

spring:
  redis:
    host: 127.0.0.1
    port: 6379
    password: foobared
    database: 0
    database1: true
    jedis:
      pool:
        # 连接池中的最大空闲连接
        max-idle: 50
        # 连接池最大连接数（使用负值表示没有限制）
        max-active: 500
        # 连接池最大阻塞等待时间（使用负值表示没有限制）
        max-wait: 300
        # 连接池中的最小空闲连接
        min-idle: 5
        #空闲对象逐出器线程的运行间隔时间.空闲连接线程释放周期时间
        time-between-eviction-runs: 1000

普通redis配置:

package com.gnetek.monitor.redis.util;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @Description RedisTemplate工具
 * @Author Darren Huang
 * @Date 2024-02-29 9:10
 */
public class RedisTemplateUtil {

    /**
     * 获取redis模板
     *
     * @param redisConnectionFactory Redis连接工厂
     * @return {@link RedisTemplate}<{@link String}, {@link Object}>
     */
    public static RedisTemplate<String, Object> getRedisTemplate (RedisConnectionFactory redisConnectionFactory) {
        //创建redisTemplate
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<String, Object>();
        //创建json序列化工具
        //GenericJackson2JsonRedisSerializer jsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
        Jackson2JsonRedisSerializer<Object> jsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);
        jsonRedisSerializer.setObjectMapper(om);
        //创建String序列化工具
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        //设置key的序列化
        redisTemplate.setKeySerializer(stringRedisSerializer);
        redisTemplate.setHashKeySerializer(stringRedisSerializer);
        //设置value的序列化
        redisTemplate.setValueSerializer(jsonRedisSerializer);
        redisTemplate.setHashValueSerializer(jsonRedisSerializer);

        //设置默认序列化工具
        redisTemplate.setDefaultSerializer(jsonRedisSerializer);

        //设置连接工厂
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        return redisTemplate;
    }
}

package com.gnetek.monitor.redis.config;

import com.gnetek.monitor.redis.util.RedisTemplateUtil;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;


/**
 * Redis配置类：Lettuce客户端
 *
 * @author Darren
 * @date 2023/05/11
 */
@Configuration
@AutoConfigureAfter(RedisAutoConfiguration.class)
public class LettuceRedisConfig {

    @Bean(name = "redisTemplate")
    @SuppressWarnings("all")
    public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory redisConnectionFactory) {
        return RedisTemplateUtil.getRedisTemplate(redisConnectionFactory);
    }

}

用于过期监听的redis数据配置：

package com.gnetek.monitor.redis.config;

import cn.hutool.core.util.StrUtil;
import com.gnetek.monitor.redis.util.RedisTemplateUtil;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration;
import org.springframework.data.redis.core.RedisTemplate;

import java.time.Duration;

/**
 * @Description 描述
 * @Author Darren Huang
 * @Date 2024-02-28 17:31
 */
@Configuration
@ConditionalOnProperty(name = "spring.redis.database1", havingValue = "true")
public class SessionRedisConfig {

    @Value("${spring.redis.host}")
    private String host;

    @Value("${spring.redis.port:6379}")
    private int port;

    @Value("${spring.redis.password:#{null}}")
    private String password;

    @Bean(name = "sessionRedisTemplate")
    public RedisTemplate<String, Object> sessionRedisTemplate() {
        //连接池配置
        GenericObjectPoolConfig<?> poolConfig = new GenericObjectPoolConfig<>();
        poolConfig.setMaxIdle(10);
        poolConfig.setMaxTotal(100);
        poolConfig.setMinIdle(2);

        //redis客户端配置
        LettucePoolingClientConfiguration.LettucePoolingClientConfigurationBuilder builder =
                LettucePoolingClientConfiguration.builder().
                        commandTimeout(Duration.ofSeconds(60));

        builder.poolConfig(poolConfig);
        LettuceClientConfiguration lettuceClientConfiguration = builder.build();

        RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration(host, port);

        redisStandaloneConfiguration.setDatabase(1);
        if (StrUtil.isNotBlank(password)) {
            redisStandaloneConfiguration.setPassword(password);
        }

        LettuceConnectionFactory factory = new LettuceConnectionFactory(redisStandaloneConfiguration, lettuceClientConfiguration);
        factory.afterPropertiesSet();

        return RedisTemplateUtil.getRedisTemplate(factory);
    }

}

redis工具及工具注入：

package com.gnetek.monitor.redis.util;

import cn.hutool.json.JSONUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;

import javax.annotation.Resource;
import java.io.Serializable;
import java.util.*;
import java.util.concurrent.TimeUnit;

/**
 * @Description Redis工具类
 * @Author Darren Huang
 * @Date 2023-05-11 9:55
 */
@Slf4j
//@Component
public class RedisUtil {

    private RedisTemplate<String, Object> redisTemplate;

    private StringRedisTemplate stringRedisTemplate;

    public RedisUtil(RedisTemplate<String, Object> redisTemplate, StringRedisTemplate stringRedisTemplate) {
        this.redisTemplate = redisTemplate;
        this.stringRedisTemplate = stringRedisTemplate;
    }

    // =============================1-common============================

    /**
     * 指定缓存失效时间
     *
     * @param key  键
     * @param time 时间(秒)
     * @return
     */
    public boolean expire(String key, long time) {
        try {
            if (time > 0) {
                redisTemplate.expire(key, time, TimeUnit.SECONDS);
            }
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 根据key 获取过期时间
     *
     * @param key 键 不能为null
     * @return 时间(秒) 返回0代表为永久有效
     */
    public long getExpire(String key) {
        return redisTemplate.getExpire(key, TimeUnit.SECONDS);
    }

    /**
     * 判断key是否存在
     *
     * @param key 键
     * @return true 存在 false不存在
     */
    public boolean hasKey(String key) {
        try {
            return redisTemplate.hasKey(key);
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 删除缓存
     *
     * @param key 可以传一个值 或多个
     */
    @SuppressWarnings("unchecked")
    public void del(String... key) {
        if (key != null && key.length > 0) {
            if (key.length == 1) {
                redisTemplate.delete(key[0]);
            } else {
                redisTemplate.delete((Collection<String>) CollectionUtils.arrayToList(key));
            }
        }
    }

    /**
     * 删除缓存
     *
     * @param keys 可以传多个
     */
    public void del(Collection<String> keys) {
        redisTemplate.delete(keys);
    }

    // ============================2-String=============================

    /**
     * 普通缓存获取
     *
     * @param key 键
     * @return 值
     */
    public Object get(String key) {
        return key == null ? null : redisTemplate.opsForValue().get(key);
    }

    /**
     * 普通缓存放入
     *
     * @param key   键
     * @param value 值
     * @return true成功 false失败
     */
    public boolean set(String key, Object value) {
        try {
            redisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }

    }

    /**
     * 普通缓存放入并设置时间
     *
     * @param key   键
     * @param value 值
     * @param time  时间(秒) time要大于0 如果time小于等于0 将设置无限期
     * @return true成功 false 失败
     */
    public boolean set(String key, Object value, long time) {
        try {
            if (time > 0) {
                redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            } else {
                set(key, value);
            }
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 递增 适用场景： https://blog.youkuaiyun.com/y_y_y_k_k_k_k/article/details/79218254 高并发生成订单号，秒杀类的业务逻辑等。。
     *
     * @param key 键
     * @param delta  要增加几(大于0)
     * @return
     */
    public long incr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递增因子必须大于0");
        }
        return redisTemplate.opsForValue().increment(key, delta);
    }

    /**
     * 递减
     *
     * @param key 键
     * @param delta  要减少几(小于0)
     * @return
     */
    public long decr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递减因子必须大于0");
        }
        return redisTemplate.opsForValue().increment(key, -delta);
    }

    // ================================3-Map=================================

    /**
     * HashGet
     *
     * @param key  键 不能为null
     * @param item 项 不能为null
     * @return 值
     */
    public Object hget(String key, String item) {
        return redisTemplate.opsForHash().get(key, item);
    }

    /**
     * 获取hashKey对应的所有键值
     *
     * @param key 键
     * @return 对应的多个键值
     */
    public Map<Object, Object> hmget(String key) {
        return redisTemplate.opsForHash().entries(key);
    }

    /**
     * HashSet
     *
     * @param key 键
     * @param map 对应多个键值
     * @return true 成功 false 失败
     */
    public boolean hmset(String key, Map<String, Object> map) {
        try {
            redisTemplate.opsForHash().putAll(key, map);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * HashSet 并设置时间
     *
     * @param key  键
     * @param map  对应多个键值
     * @param time 时间(秒)
     * @return true成功 false失败
     */
    public boolean hmset(String key, Map<String, Object> map, long time) {
        try {
            redisTemplate.opsForHash().putAll(key, map);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 向一张hash表中放入数据,如果不存在将创建
     *
     * @param key   键
     * @param item  项
     * @param value 值
     * @return true 成功 false失败
     */
    public boolean hset(String key, String item, Object value) {
        try {
            redisTemplate.opsForHash().put(key, item, value);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 向一张hash表中放入数据,如果不存在将创建
     *
     * @param key   键
     * @param item  项
     * @param value 值
     * @param time  时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间
     * @return true 成功 false失败
     */
    public boolean hset(String key, String item, Object value, long time) {
        try {
            redisTemplate.opsForHash().put(key, item, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 删除hash表中的值
     *
     * @param key  键 不能为null
     * @param item 项 可以使多个 不能为null
     */
    public void hdel(String key, Object... item) {
        redisTemplate.opsForHash().delete(key, item);
    }

    /**
     * 判断hash表中是否有该项的值
     *
     * @param key  键 不能为null
     * @param item 项 不能为null
     * @return true 存在 false不存在
     */
    public boolean hHasKey(String key, String item) {
        return redisTemplate.opsForHash().hasKey(key, item);
    }

    /**
     * hash递增 如果不存在,就会创建一个 并把新增后的值返回
     *
     * @param key  键
     * @param item 项
     * @param by   要增加几(大于0)
     * @return
     */
    public double hincr(String key, String item, double by) {
        return redisTemplate.opsForHash().increment(key, item, by);
    }

    /**
     * hash递减
     *
     * @param key  键
     * @param item 项
     * @param by   要减少记(小于0)
     * @return
     */
    public double hdecr(String key, String item, double by) {
        return redisTemplate.opsForHash().increment(key, item, -by);
    }

    /**
     * 借助管道，实现Hash模糊匹配读取
     *
     * @param keyPattern  key模糊匹配
     * @param excludeKeys  排除的列
     * @return
     */
    public Object hGetAllByPipe(String keyPattern, String ...excludeKeys){
        Set<String> keys = stringRedisTemplate.keys(keyPattern);
        keys.removeAll(Arrays.asList(excludeKeys));
        List<?> list = redisTemplate.executePipelined(new RedisCallback<Object>() {
            @Override
            public Object doInRedis(RedisConnection connection) throws DataAccessException {
                connection.openPipeline();
                for (String key : keys) {
                    connection.hashCommands().hGetAll(key.getBytes());
                }
                return null;
            }
        });
        ArrayList<String> strings = new ArrayList<>();
        for (int i = 0; i < list.size(); i++) {
            strings.add(JSONUtil.toJsonPrettyStr(list.get(i)));
        }
        return strings;
    }

    // ============================4-set=============================

    /**
     * 根据key获取Set中的所有值
     *
     * @param key 键
     * @return
     */
    public Set<Object> sGet(String key) {
        try {
            return redisTemplate.opsForSet().members(key);
        } catch (Exception e) {
            log.error(key, e);
            return null;
        }
    }

    /**
     * 根据value从一个set中查询,是否存在
     *
     * @param key   键
     * @param value 值
     * @return true 存在 false不存在
     */
    public boolean sHasKey(String key, Object value) {
        try {
            return redisTemplate.opsForSet().isMember(key, value);
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 将数据放入set缓存
     *
     * @param key    键
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long sSet(String key, Object... values) {
        try {
            return redisTemplate.opsForSet().add(key, values);
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    /**
     * 将set数据放入缓存
     *
     * @param key    键
     * @param time   时间(秒)
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long sSetAndTime(String key, long time, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().add(key, values);
            if (time > 0)
                expire(key, time);
            return count;
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    /**
     * 获取set缓存的长度
     *
     * @param key 键
     * @return
     */
    public long sGetSetSize(String key) {
        try {
            return redisTemplate.opsForSet().size(key);
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    /**
     * 移除值为value的
     *
     * @param key    键
     * @param values 值 可以是多个
     * @return 移除的个数
     */
    public long setRemove(String key, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().remove(key, values);
            return count;
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    // ============================5-zset=============================

    /**
     * 根据key获取Set中的所有值
     *
     * @param key 键
     * @return
     */
    public Set<Object> zSGet(String key) {
        try {
            return redisTemplate.opsForSet().members(key);
        } catch (Exception e) {
            log.error(key, e);
            return null;
        }
    }

    /**
     * 根据value从一个set中查询,是否存在
     *
     * @param key   键
     * @param value 值
     * @return true 存在 false不存在
     */
    public boolean zSHasKey(String key, Object value) {
        try {
            return redisTemplate.opsForSet().isMember(key, value);
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    public Boolean zSSet(String key, Object value, double score) {
        try {
            return redisTemplate.opsForZSet().add(key, value, 2);
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 将set数据放入缓存
     *
     * @param key    键
     * @param time   时间(秒)
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long zSSetAndTime(String key, long time, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().add(key, values);
            if (time > 0)
                expire(key, time);
            return count;
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    /**
     * 获取set缓存的长度
     *
     * @param key 键
     * @return
     */
    public long zSGetSetSize(String key) {
        try {
            return redisTemplate.opsForSet().size(key);
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    /**
     * 移除值为value的
     *
     * @param key    键
     * @param values 值 可以是多个
     * @return 移除的个数
     */
    public long zSetRemove(String key, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().remove(key, values);
            return count;
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }
    // ===============================6-list=================================

    /**
     * 获取list缓存的内容
     *
     * @param key   键
     * @param start 开始 0 是第一个元素
     * @param end   结束 -1代表所有值
     * @return
     * @取出来的元素 总数 end-start+1
     */
    public List<?> lget(String key, long start, long end) {
        try {
            return redisTemplate.opsForList().range(key, start, end);
        } catch (Exception e) {
            log.error(key, e);
            return null;
        }
    }
    /**
     * 获取list缓存的内容
     *
     * @param key   键
     * @param start 开始 0 是第一个元素
     * @return
     * @取出来的元素 总数 end-start+1
     */
    public List<?> lget(String key, long start) {
        try {
            return redisTemplate.opsForList().range(key, start, -1);
        } catch (Exception e) {
            log.error(key, e);
            return null;
        }
    }

    /**
     * 获取list缓存的内容
     *
     * @param key 关键
     * @return {@link List}<{@link Object}>
     */
    public List<?> lget(String key) {
        try {
            return redisTemplate.opsForList().range(key, 0, -1);
        } catch (Exception e) {
            log.error(key, e);
            return null;
        }
    }

    /**
     * 获取list缓存的长度
     *
     * @param key 键
     * @return
     */
    public long lgetListSize(String key) {
        try {
            return redisTemplate.opsForList().size(key);
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    /**
     * 通过索引 获取list中的值
     *
     * @param key   键
     * @param index 索引 index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推
     * @return
     */
    public Object lgetItem(String key, long index) {
        try {
            return redisTemplate.opsForList().index(key, index);
        } catch (Exception e) {
            log.error(key, e);
            return null;
        }
    }

    /**
     * 将list放入缓存
     *
     * @param key   键
     * @param value 值
     * @return
     */
    public boolean lsetItem(String key, Object value) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     *
     * @param key   键
     * @param value 值
     * @param time  时间(秒)
     * @return
     */
    public boolean lsetItem(String key, Object value, long time) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            if (time > 0)
                expire(key, time);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     *
     * @param key   键
     * @param value 值
     * @return
     */
    public boolean lset(String key, List<?> value) {
        try {
            redisTemplate.opsForList().rightPushAll(key, value.toArray());
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     *
     * @param key   键
     * @param value 值
     * @param time  时间(秒)
     * @return
     */
    public boolean lset(String key, List<?> value, long time) {
        try {
            redisTemplate.opsForList().rightPushAll(key, value.toArray());
            if (time > 0)
                expire(key, time);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 根据索引修改list中的某条数据
     *
     * @param key   键
     * @param index 索引
     * @param value 值
     * @return
     */
    public boolean lUpdateIndex(String key, long index, Object value) {
        try {
            redisTemplate.opsForList().set(key, index, value);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * 移除N个值为value
     *
     * @param key   键
     * @param count 移除多少个
     * @param value 值
     * @return 移除的个数
     */
    public long lRemove(String key, long count, Object value) {
        try {
            Long remove = redisTemplate.opsForList().remove(key, count, value);
            return remove;
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    /**
     * 阻塞访问List，左弹出
     *
     * @param key   键
     * @param time 等待时间
     * @param timeUnit 时间粒度
     * @return 弹出的数据
     */
    public Object lLeftPop(String key,long time,TimeUnit timeUnit) {
        try {
            Object leftPop = redisTemplate.opsForList().leftPop(key, time, timeUnit);
            return leftPop;
        } catch (Exception e) {
            log.error(key, e);
            return 0;
        }
    }

    /**
     * List，左写入
     *
     * @param key   键
     * @param value 值
     * @return 弹出的数据
     */
    public Boolean lLeftPush(String key,Object value) {
        try {
            redisTemplate.opsForList().leftPush(key, value);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }

    /**
     * List，右写入
     *
     * @param key   键
     * @param value 值
     * @return 弹出的数据
     */
    public Boolean lRightPush(String key,Object value) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            return true;
        } catch (Exception e) {
            log.error(key, e);
            return false;
        }
    }


    /**
     * 执行
     *
     * @param redisCallback 复述,回调
     * @return {@link Object}
     */
    public Object execute(RedisCallback<?> redisCallback){
        return redisTemplate.execute(redisCallback);
    }


    /**
     * 获取键
     *
     * @param s 年代
     * @return {@link Set}<{@link String}>
     */
    public Set<String> keys(String s) {
        return redisTemplate.keys(s);
    }
}

下面redis工具注入，这里注意，我另外写了一个sessionRedisUtil用于，对redis1号数据库的读写：

package com.gnetek.monitor.redis.config;

import com.gnetek.monitor.redis.util.RedisUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

/**
 * @Description Redis Component
 * @Author Darren Huang
 * @Date 2024-02-27 16:15
 */
@Component
public class RedisComponent {

    @Resource(name = "redisTemplate")
    private RedisTemplate<String, Object> redisTemplate;

    @Autowired(required = false)
    @Qualifier(value = "sessionRedisTemplate")
    private RedisTemplate<String, Object> sessionRedisTemplate;

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Bean(name = "redisUtil")
    @ConditionalOnMissingBean(RedisUtil.class)
    @ConditionalOnBean(RedisTemplate.class)
    public RedisUtil redisUtil() {
        return new RedisUtil(redisTemplate, stringRedisTemplate);
    }

    @Bean(name = "sessionRedisUtil")
    @ConditionalOnProperty(name = "spring.redis.database1", havingValue = "true")
    public RedisUtil sessionRedisUtil() {
        return new RedisUtil(sessionRedisTemplate, stringRedisTemplate);
    }

}

使用方法：

    @Autowired
    private RedisUtil redisUtil;

    @Resource(name = "sessionRedisUtil")
    private RedisUtil sessionRedisUtil;

redis过期监听：

public static final String EXPIRED_TOPIC = "__keyevent@1__:expired";

package com.gnetek.monitor.api.listener;

import com.gnetek.monitor.common.constants.CacheNames;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.connection.MessageListener;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.listener.KeyExpirationEventMessageListener;
import org.springframework.data.redis.listener.PatternTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.listener.Topic;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

/**
 * @Description redis 数据库1的 key 过期监听事件
 * @Author Darren Huang
 * @Date 2024-02-27 11:38
 */
@Slf4j
@Component
public class RedisKeyExpiredListener extends KeyExpirationEventMessageListener {

    /**
     * __keyevent@1__:expired
     */
    private static final Topic KEYEVENT_1_EXPIRED_TOPIC = new PatternTopic(CacheNames.EXPIRED_TOPIC);

    /**
     * Creates new {@link MessageListener} for {@code __keyevent@*__:expired} messages.
     *
     * @param listenerContainer must not be {@literal null}.
     */
    public RedisKeyExpiredListener(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
    }

    @Override
    protected void doRegister(RedisMessageListenerContainer listenerContainer) {
        listenerContainer.addMessageListener(this, KEYEVENT_1_EXPIRED_TOPIC);
    }

    @Override
    public void onMessage(Message message, byte[] pattern) {
        String expiredKey = new String(message.getBody());
        log.error("过期key = {}", expiredKey);
        // 在这里处理过期事件的逻辑
        if (expiredKey.startsWith(CacheNames.EXPIRED_LISTENER_KEY)) {
            // TODO: 2024/2/27 触发事件，发送邮件
        }
    }
}