update

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

@@ -315,9 +315,9 @@ public class CourseScheduleServiceImpl extends BaseServiceImpl<Long, CourseSched
 		if(oldCourseScheduleList.size()!=newCourseSchedules.size()){
 			throw new BizException("课程信息错误");
 		}
-		Map<Long, List<CourseSchedule>> oldCourseSchedules = oldCourseScheduleList.stream().collect(Collectors.groupingBy(CourseSchedule::getId));
+		Map<Long, CourseSchedule> oldCourseSchedules = oldCourseScheduleList.stream().collect(Collectors.toMap(CourseSchedule::getId,courseSchedule -> courseSchedule));
 		newCourseSchedules.forEach(newCourseSchedule -> {
-			CourseSchedule oldCourseSchedule = oldCourseSchedules.get(newCourseSchedule.getId()).get(0);
+			CourseSchedule oldCourseSchedule = oldCourseSchedules.get(newCourseSchedule.getId());
 			ArrayList<Date> dates = new ArrayList<>();
 			dates.add(newCourseSchedule.getClassDate());
 			List<CourseSchedule> coursesByDates = courseScheduleDao.findOverLapCoursesInDay(dates,newCourseSchedule.getStartClassTime(),newCourseSchedule.getEndClassTime());