/** APP接口、WEB平台:根据学生名称查询学生信息 */
 @Override
 public List<StudentManagerDTO> queryStudentByRealName(String realName, String userId) {
   if (StringUtils.isEmpty(userId)) {
     logger.debug("userId 不能为空");
     return null;
   }
   String schoolId = userService.getSchoolId(userId);
   List<MStudentManager> userList = studentMapper.selectStudentByRealName(realName, schoolId);
   List<StudentManagerDTO> userDTOList = new ArrayList<>();
   for (MStudentManager u : userList) {
     StudentManagerDTO userDTO = new StudentManagerDTO();
     BeanUtils.copyProperties(u, userDTO);
     userDTOList.add(userDTO);
   }
   return userDTOList;
 }