import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Configurable;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configurable
 class RedisTemplateConfig {

    @Autowired
    public RedisTemplateConfig(RedisTemplate redisTemplate){
        // 1. 创建jackson序列化方式
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
                Object.class);
        // 2. 创建object mapper
        ObjectMapper objectMapper = new ObjectMapper();
        // 允许访问对象的所有属性
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        // 转换json过程中保存类信息
        objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL,
                JsonTypeInfo.As.WRAPPER_ARRAY);

        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);

        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();

        // 设置value的序列化规则和key的序列化规则
        redisTemplate.setKeySerializer(stringRedisSerializer);
        // jackson2JsonRedisSerializer 就是JSON的序列号规则
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        // 设置hash类型key/value序列化
        redisTemplate.setHashKeySerializer(stringRedisSerializer);
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
        // 工厂创建redisTemplate对象之后在进行配置
        redisTemplate.afterPropertiesSet();
    }
}