Merge branch 'master' of http://git.dayaedu.com/yonge/mec

mec-biz/src/main/java/com/ym/mec/biz/service/impl/StudentCourseHomeworkServiceImpl.java

@@ -87,7 +87,7 @@ public class StudentCourseHomeworkServiceImpl extends BaseServiceImpl<Long, Stud
         if (Objects.isNull(bean) || Objects.isNull(bean.getId()) || Objects.isNull(existHomework)) {
             throw new BizException("作业不存在");
         }
-        boolean push = Objects.isNull(bean.getAttachments());
+        boolean push = Objects.isNull(existHomework.getAttachments());
         super.update(bean);
         bean = studentCourseHomeworkDao.get(bean.getId());
         CourseSchedule courseSchedule = courseScheduleDao.get(bean.getCourseScheduleId());