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问题现象

在参考网上的Redis集成后，配置了RedisTemplate的序列化，配置成功后@Cacheable注解的缓存仍然是jdk的序列化，配置无效。

参考配置的类似代码：

@Bean("redisTemplate")
public  RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory connectionFactory) {RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();redisTemplate.setConnectionFactory(connectionFactory);var jackson2JsonRedisSerializer = getJackson2JsonRedisSerializer();// 设置value的序列化规则和key的序列化规则redisTemplate.setKeySerializer(new StringRedisSerializer());redisTemplate.setHashKeySerializer(new StringRedisSerializer());redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);redisTemplate.afterPropertiesSet();return redisTemplate;}
public static GenericJackson2JsonRedisSerializer getJackson2JsonRedisSerializer() {var jackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer();jackson2JsonRedisSerializer.configure(objectMapper -> {// add java8 time moduleobjectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);objectMapper.activateDefaultTyping(new LaissezFaireSubTypeValidator(),ObjectMapper.DefaultTyping.EVERYTHING);JavaTimeModule javaTimeModule = new JavaTimeModule();objectMapper.registerModule(javaTimeModule);});return jackson2JsonRedisSerializer;}

问题原因

@Cacheable未使用RedisTemplate，所以操作无效。他使用的是CacheManager

问题解决

配置CacheManager即可。

我们可以使用 RedisCacheManagerBuilderCustomizer 来自定义CacheManager

public class MyRedisCacheManagerBuilderSerialCustomizer implements RedisCacheManagerBuilderCustomizer {@Overridepublic void customize(RedisCacheManager.RedisCacheManagerBuilder builder) {RedisSerializer<String> stringRedisSerializer = new StringRedisSerializer();var jackson2JsonRedisSerializer = getJackson2JsonRedisSerializer();var configuration = builder.cacheDefaults().serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(stringRedisSerializer)).serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer));builder.cacheDefaults(configuration);var configuredCaches = builder.getConfiguredCaches();// 针对有的缓存存在自定义配置的情况，读取所有缓存的配置，设置序列化方法for (String configuredCache : configuredCaches) {var cacheConfig = builder.getCacheConfigurationFor(configuredCache);cacheConfig.ifPresent(config -> {var newConfig = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(stringRedisSerializer)).serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer));builder.withCacheConfiguration(configuredCache, newConfig);});}}
}