pom.xml导入依赖

<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-cache -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-cache</artifactId>
</dependency>

启动类加入启用缓存注解

@EnableCaching

application.yml指定缓存类型(例如redis),缓存存活时间(单位：毫秒)

spring:
  cache:
    type: redis
    redis:
      time-to-live: 3600000

// 给方法上加入注解
// 注意key的值是SpEL表达式，故要加单引号
// value为缓存名字
// key表达式可见 https://docs.spring.io/spring/docs/5.2.6.RELEASE/spring-framework-reference/integration.html#cache-spel-context
@Cacheable(value = {"product"}, key="'customkey'")


// 自定义缓存配置
package dev.painaodai.cloud.member.config;

import com.alibaba.fastjson.support.spring.GenericFastJsonRedisSerializer;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class CustomCacheConfig {

    @Bean
    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties){
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();

        redisCacheConfiguration = redisCacheConfiguration.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(RedisSerializer.string()));
        redisCacheConfiguration = redisCacheConfiguration.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(RedisSerializer.json()));
        
        // redisCacheConfiguration = redisCacheConfiguration.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        // redisCacheConfiguration = redisCacheConfiguration.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericFastJsonRedisSerializer()));
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        // 过期时间
        if(redisProperties.getTimeToLive() != null){
            redisCacheConfiguration = redisCacheConfiguration.entryTtl(redisProperties.getTimeToLive());
        }

        // 自定义前缀
        if(redisProperties.getKeyPrefix() != null){
            redisCacheConfiguration = redisCacheConfiguration.prefixKeysWith(redisProperties.getKeyPrefix());
        }

        // 是否缓存空值
        if(!redisProperties.isCacheNullValues()){
            redisCacheConfiguration = redisCacheConfiguration.disableCachingNullValues();
        }

        // 是否启用前缀
        if(!redisProperties.isUseKeyPrefix()){
            redisCacheConfiguration = redisCacheConfiguration.disableKeyPrefix();
        }
        return redisCacheConfiguration;
    }
}

To Be Continued！😎