今天spring boot2.3.0整合redis进行JSON的缓存，报了这么一个错：

org.springframework.data.redis.serializer.SerializationException: Could not read JSON: Unexpected character (‘¬‘ (code 172)): expected a valid value (JSON String, Number, Array, Object or token ‘null‘, ‘true‘ or ‘false‘)org.springframework.data.redis.serializer.SerializationException: Could not read JSON: Unexpected character (‘¬‘ (code 172)): expected a valid value (JSON String, Number, Array, Object or token ‘null‘, ‘true‘ or ‘false‘)

解决：之前的序列化方式不是JSON的，但是已经缓存到Redis中没有删除，所以……

过程：

嗯……搞不懂，说我序列化失败，早来找去都不知道错哪了，鉴于RedisCacheManager是复制过来的，就去看了看源代码，也没觉得这个代码写错了。

然后搞来搞去，浪费了2个半小时，后来没办法，我又重新开始，回到上一步的直接用原本的序列化方法，不用json序列化，然后又给我报了个错：序列化的UID不匹配，嗯……刚前不久改了下UID,他这个报错我再是明白了，redis之前的缓存没有删除

回到Redis删除键，再来一次，成功。

附上代码：

@Configuration
public class MyRedisConfig {


    @Bean
    public RedisCacheManager redisCacheManager (RedisConnectionFactory redisConnectionFactory){
//初始化一个redisCacheWriter
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory);
//初始化序列化方式为json
        RedisSerializer redisSerializer = new GenericJackson2JsonRedisSerializer();
        RedisSerializationContext.SerializationPair pair = RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer);
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig().serializeValuesWith(pair);

        return new RedisCacheManager(redisCacheWriter,redisCacheConfiguration);
    }
}

Could not read JSON: Unexpected character ('¬' (code 172)): expected a valid value (JSON String, Number, Array, Object or token 'null', 'true' or 'false')