使用自定义序列化方式，实现Redis存储json格式数据

jdk自带的序列化方式，我们无法直接看到数据，可以使用使用自定义序列化方式，来实现Redis存储json格式数据

@Configuration
public class RedisConfig{
@Bean 
public RedisCacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) { 
// 分别创建String和JSON格式序列化对象，对缓存数据key和value进行转换 
RedisSerializer strSerializer = new StringRedisSerializer(); 
Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class); 

// 解决查询缓存转换异常的问题 
ObjectMapper om = new ObjectMapper(); 
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); 
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); jacksonSeial.setObjectMapper(om);

 // 定制缓存数据序列化方式及时效 
 RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig() 
.entryTtl(Duration.ofDays(1)) 
.serializeKeysWith(RedisSerializationContext.SerializationPair 
.fromSerializer(strSerializer))  //key为String
.serializevaluesWith(RedisSerializationContext.SerializationPair 
.fromSerializer(jacksonSeial))  //value为json
.disableCachingNullValues(); 

RedisCacheManager cacheManager = RedisCacheManager.builder(redisConnectionFactory).cacheDefaults(config).build(); 

return cacheManager;
 }
}