执行操作：
redisTemplate.opsForHash().put(“TEST", “7”, 2L);

查看redis中的数据：

 1) "7"
 2) "\xac\xed\x00\x05sr\x00\x0ejava.lang.Long;\x8b\xe4\x90\xcc\x8f#\xdf\x02\x00\x01J\x00\x05valuexr\x00\x10java.lang.Number\x86\xac\x95\x1d\x0b\x94\xe0\x8b\x02\x00\x00xp\x00\x00\x00\x00\x00\x00\x00\x02"

说明在序列化存储时类型不对

解决：

	@Bean("redisCacheTemplate")
    public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.setKeySerializer(stringRedisSerializer);
        // redisTemplate.setValueSerializer(jackson2JsonRedisSerializer());
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        redisTemplate.setHashKeySerializer(stringRedisSerializer);
        redisTemplate.setHashValueSerializer(new MyGenericJackson2JsonRedisSerializer());
        // redisTemplate.setHashValueSerializer(stringRedisSerializer);
        // redisTemplate.setDefaultSerializer(stringRedisSerializer);
        // redisTemplate.setEnableDefaultSerializer(true);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }
    
    class MyGenericJackson2JsonRedisSerializer extends GenericJackson2JsonRedisSerializer {

        public byte[] serialize(Object object) throws SerializationException {
            if (object == null) return new byte[0];
            if (object instanceof Long || object instanceof Double) return object.toString().getBytes(Charset.forName("UTF-8"));
            try {
                return JSON.toJSONBytes(object, SerializerFeature.WriteClassName);
            } catch (Exception exception) {
                throw new SerializationException("Could not serialize : " + exception.getMessage(), exception);
            }
        }

    }