下面的代码会出现org.nutz.dao.DaoException: Need non-arg constructor : class cn.sayyoo.house.constant.HouseFeatureEnum
这个错误，具体的代码在下面也不知道什么情况，求解答

 private void insertHouseFeature(Room room) throws Exception {
        List<HouseFeatureEnum> featureList = room.getFeatureList();
        if (featureList != null && featureList.size() > 0) {
            Sql sql = dao().sqls().create("deleteFeatureByRoomId");
            sql.setParam("roomId", room.getId());
            dao().execute(sql);
            dao().fastInsert(featureList);
        }
    }

public enum HouseFeatureEnum {
    WIFI,
    FACE_SOUTH;
    HouseFeatureEnum() {
    }
}