/** 补课缺席 */
 public static MissedLessonStateDto getIsAbsent() {
   MissedLessonStateDto m = new MissedLessonStateDto();
   m.setZdbm(IS_ABSENT);
   return m;
 }
 /** 补课取消 */
 public static MissedLessonStateDto getHasCancel() {
   MissedLessonStateDto m = new MissedLessonStateDto();
   m.setZdbm(HAS_CANCEL);
   return m;
 }
 /** 补课已排 */
 public static MissedLessonStateDto getHasPlan() {
   MissedLessonStateDto m = new MissedLessonStateDto();
   m.setZdbm(HAS_PLAN);
   return m;
 }
 /** 补课已补 */
 public static MissedLessonStateDto getHasFinish() {
   MissedLessonStateDto m = new MissedLessonStateDto();
   m.setZdbm(HAS_FINISH);
   return m;
 }
 /** 补课未排 */
 public static MissedLessonStateDto getNotPlan() {
   MissedLessonStateDto m = new MissedLessonStateDto();
   m.setZdbm(NOT_PLAN);
   return m;
 }