feat:课表列表新增调整

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

@@ -2979,9 +2979,9 @@ public class CourseScheduleServiceImpl extends BaseServiceImpl<Long, CourseSched
 			Map<Integer, String> classGroupSubjectNameMap = MapUtil.convertIntegerMap(classGroupSubjectNameMaps);
 
 			List<Integer> schoolIds = oldCourses.stream().filter(o -> Objects.nonNull(o.getSchoolId())).map(CourseSchedule::getSchoolId).collect(Collectors.toList());
-			List<School> schools = schoolDao.getSchools(schoolIds);
 			Map<Integer, String> idSchoolNameMap = new HashMap<>();
-			if(!CollectionUtils.isEmpty(schools)){
+			if(!CollectionUtils.isEmpty(schoolIds)){
+				List<School> schools = schoolDao.getSchools(schoolIds);
 				idSchoolNameMap = schools.stream().collect(Collectors.toMap(School::getId, s->s.getName(), (s1, s2)->s1));
 			}