Redis 如何将值存储为 json

Redis how to store values as json

我在我的应用程序中使用 redis 作为我的缓存存储。为此,我使用以下 redis 配置:

@Configuration
@EnableCaching
public class SpringRedisConfig {
@Bean
public JedisConnectionFactory connectionFactory() {
    JedisConnectionFactory connectionFactory = new JedisConnectionFactory();
    connectionFactory.setHostName("localhost");
    connectionFactory.setPort(6379);
    return connectionFactory;
}

@Bean
public RedisTemplate<String, Object> redisTemplate() {
    RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
    redisTemplate.setConnectionFactory(connectionFactory());
    redisTemplate.setKeySerializer(new StringRedisSerializer());


    RedisSerializer<String> redisSerializer = new StringRedisSerializer();

    Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
    ObjectMapper om = new ObjectMapper();
    om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
    om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
    jackson2JsonRedisSerializer.setObjectMapper(om);

    //template.setConnectionFactory(factory);
    redisTemplate.setKeySerializer(redisSerializer);
    redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
    redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);


    return redisTemplate;
}
}

在我将数据存储在缓存中的服务中,我使用 @Cacheable 如下:

@Cacheable(value = "institute_detail_cache", key = "'inst_'+#instituteId")
public Map<String, String> getDetailsFromCache(Long instituteId) {
    log.info("not found in cache.....");

    Map<String, String> map = new HashMap<>();
    map.put("name", "kayv");
    map.put("age", "20");

    return map;
}

代码运行良好并将数据作为对象存储在缓存中。这是我从 redis cli 获得的值:

但我的要求是使用键值对将数据(值)存储为 json。这就是为什么我使用 Jackson2JsonRedisSerializer 进行值序列化。

谁能指出我做错了什么?

我需要执行什么才能使我的 类 存储为 json 而不是我在此示例中使用的地图?

使用 GenericJackson2JsonRedisSerializer class 而不是 Jackson2JsonRedisSerializer class 解决了我的问题。

创建了一个新的配置 class (RedisCacheManagerConfiguration.java) 而不是旧的 SpringRedisConfig.java。

@Configuration
@EnableCaching
public class RedisCacheManagerConfiguration {

    @Autowired
    private RedisConnectionFactory redisConnectionFactory;

    @Bean
    public CacheManager redisCacheManager() {
        RedisSerializationContext.SerializationPair<Object> jsonSerializer =
                RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer());

        return RedisCacheManager.RedisCacheManagerBuilder
                .fromConnectionFactory(redisConnectionFactory)
                .cacheDefaults(
                        RedisCacheConfiguration.defaultCacheConfig()
                                .entryTtl(Duration.ofDays(1))
                                .serializeValuesWith(jsonSerializer)
                )
                .build();
    }

}