1、报错原理

使用的RedisTemplate，做读写操作时候，都是要经过序列化和反序列化。这时你使用redisTemplate.opsForValue().increment()【自增和自减操作】就可能报错redis.clients.jedis.exceptions.JedisDataException: ERR value is not an integer or out of range了。

2、解决

修改默认的RedisTemplate bean。注意：主要是要将RedisTemplate序列化

/**
 * rides配置类
 * @author 15594
 */
@EnableCaching
@Configuration
public class RidesConfig extends CachingConfigurerSupport {
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        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);
        //key序列化方式
        template.setKeySerializer(redisSerializer);
        //value序列化
        template.setValueSerializer(jackson2JsonRedisSerializer);
        //value hashmap序列化
        template.setHashValueSerializer(jackson2JsonRedisSerializer);

        //是否开启事务，true为开启
        template.setEnableTransactionSupport(true);

        return template;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = 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);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        // 配置序列化（解决乱码的问题）,过期时间600秒
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(600))
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();
        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .build();
        return cacheManager;
    }

}

3、参考

RedisTemplate increment 错误:ERR value is not an integer or out of range解决

/**
 * 设置 redisTemplate 的序列化设置
 * @param redisConnectionFactory
 * @return
 */
@Bean
public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
    // 1.创建 redisTemplate 模版
    RedisTemplate<Object, Object> template = new RedisTemplate<>();
    // 2.关联 redisConnectionFactory
    template.setConnectionFactory(redisConnectionFactory);
    // 3.创建 序列化类
    GenericToStringSerializer genericToStringSerializer = new GenericToStringSerializer(Object.class);
    // 6.序列化类，对象映射设置
    // 7.设置 value 的转化格式和 key 的转化格式
    template.setValueSerializer(genericToStringSerializer);
    template.setKeySerializer(new StringRedisSerializer());
    template.afterPropertiesSet();
    return template;
    }
}