springboot2.0整合redis自定义注解实现过期时间

前提
可以通过以下方法统一过期时间，就是不太实用

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        //设置缓存过期时间
        RedisCacheConfiguration redisCacheCfg=RedisCacheConfiguration.defaultCacheConfig()
                            .entryTtl(Duration.ofHours(1))
                            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(STRING_SERIALIZER))
                            .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(JACKSON__SERIALIZER));
        return RedisCacheManager.builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory))
                .cacheDefaults(redisCacheCfg)
                .build();
    }

自定义注解实现

1、实现思路：通过spring相关方法拿到所有 自定义的注解，将过期时间设置到对应key里

新建类RedisTimeCacheManager 继承 RedisCacheManager 重写loadCaches()方法
实现 ApplicationContextAware 用于通过 applicationContext 拿到所有 自定义的注解
实现 InitializingBean 用于执行 afterPropertiesSet方法

2、代码如下

/**
 * @author xhji
 */
@Slf4j
public class RedisTimeCacheManager extends RedisCacheManager implements ApplicationContextAware, InitializingBean {

    private ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    private Map initialCacheConfiguration = new LinkedHashMap<>();

    /**
     * key serializer
     */
    public static final StringRedisSerializer STRING_SERIALIZER = new StringRedisSerializer();

    /**
     * value serializer
     * 
     *     使用 FastJsonRedisSerializer 会报错：java.lang.ClassCastException
     *     FastJsonRedisSerializer