项目开发中发现在一个项目中拿到值放到redis在另一个项目同通过相同key取时拿到的值都是null，再到redis工具中看，发现key都以类似乱码形式存储了起来。
解决方法：

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;/*** @Author yimocha* @Version 1.0**/
@Configuration
public class CacheConfig {@Beanpublic RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {RedisTemplate<String, Object> redisTemplate = new RedisTemplate();    redisTemplate.setConnectionFactory(redisConnectionFactory);redisTemplate.setValueSerializer(genericJackson2JsonRedisSerializer());redisTemplate.setHashValueSerializer(genericJackson2JsonRedisSerializer());redisTemplate.setKeySerializer(new StringRedisSerializer());redisTemplate.setHashKeySerializer(new StringRedisSerializer());return redisTemplate;}@Beanpublic GenericJackson2JsonRedisSerializer genericJackson2JsonRedisSerializer(){return new GenericJackson2JsonRedisSerializer();}
}