springboot+shiro+redis序列化问题?报错

大致配置文件：

redis：

@Bean
public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {

    StringRedisTemplate template = new StringRedisTemplate(factory);
    setSerializer(template); //设置序列化工具，这样ReportBean不需要实现Serializable接口
    template.afterPropertiesSet();
    return template;
}

private void setSerializer(StringRedisTemplate template) {

    // 使用Jackson2JsonRedisSerialize 替换默认序列化
    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.setValueSerializer(jackson2JsonRedisSerializer);
}

shiro：继承

AbstractSessionDAO

/**
 * 读取session
 * @param sessionId
 * @return
 */
@Override
protected Session doReadSession(Serializable sessionId) {
    System.out.println("==============doReadSession=================");
    if (sessionId == null) {
        return null;
    }

    Session session = (Session) redisTemplate.opsForValue().get(sessionId);
    logger.info("读取session++++++++++++:sessionId = "+sessionId+",session:"+session);

    return session;
}

但是读取的时候报错：

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "valid" (class org.apache.shiro.session.mgt.SimpleSession), not marked as ignorable (10 known properties: "attributeKeys", "timeout", "startTimestamp", "expired", "lastAccessTime", "host", "id", "stopTimestamp", "attributes", "attributesLazy"])
 

查了下，是反序列化报错，字段啥的，但是也没看出啥问题啊？求解