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

<!-- commons-pool2連接池 -->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-pool2</artifactId>
</dependency>

spring:
  # redis 配置
  redis:
    # 地址
    host: localhost
    # 端口，默認(rèn)為6379
    port: 6379
    # 數(shù)據(jù)庫(kù)索引
    database: 0
    # 密碼
    password:
    # 連接超時(shí)時(shí)間
    timeout: 10s
    lettuce:
      pool:
        # 連接池中的最小空閑連接
        min-idle: 0
        # 連接池中的最大空閑連接
        max-idle: 8
        # 連接池的最大數(shù)據(jù)庫(kù)連接數(shù)
        max-active: 8
        # #連接池最大阻塞等待時(shí)間（使用負(fù)值表示沒(méi)有限制）
        max-wait: -1ms

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.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * Redis序列化規(guī)則配置類
 */
@Configuration
public class RedisConfig {

    /**
     * 自定義序列化機(jī)制
     *
     * @param connectionFactory
     * @return
     */
    @Bean
    @SuppressWarnings(value = {"unchecked", "rawtypes"})
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setConnectionFactory(connectionFactory);
        // Json序列化配置
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);
        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
        // String 的序列化
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        template.setValueSerializer(jackson2JsonRedisSerializer);
        // hash的value序列化方式采用jackson
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

    // redis 監(jiān)聽(tīng)事件
    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }

}

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

@Component
@Slf4j
public class RedisKeyExpirationListener extends KeyExpirationEventMessageListener {

    public RedisKeyExpirationListener(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
        log.info("過(guò)期事件，啟動(dòng)監(jiān)聽(tīng)......");
    }

    /**
     * Redis失效事件 key
     *
     * @param message
     * @param pattern
     */
    @Override
    public void onMessage(Message message, byte[] pattern) {
        String expireKey = message.toString();
        System.out.println("過(guò)期事件監(jiān)聽(tīng)鍵：" + expireKey);
        // 獲取訂單編號(hào)
        if (expireKey.startsWith("order:")) {
            // 截取訂單編號(hào)
            final String str = expireKey.substring(expireKey.lastIndexOf(":") + 1);
            System.out.println(str);
            System.out.println("轉(zhuǎn)換后訂單編號(hào)：" + Long.valueOf(str));
            // TODO 業(yè)務(wù)處理邏輯
        }
    }
}