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															@@ -547,6 +547,9 @@ public class CourseScheduleServiceImpl extends BaseServiceImpl<Long, CourseSched 
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															 		List<CourseSchedule> existCourseSchedules = courseScheduleDao 
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															 		List<CourseSchedule> existCourseSchedules = courseScheduleDao 
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															 				.findAllCourseByDateZone(firstCourseSchedule.getStartClassTime(), latestCourseSchedule.getEndClassTime()); 
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															 				.findAllCourseByDateZone(firstCourseSchedule.getStartClassTime(), latestCourseSchedule.getEndClassTime()); 
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															+		if(existCourseSchedules ==null || existCourseSchedules.size()==0){ 
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															+			return null; 
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															+		} 
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															 		//只需要调整课程信息的课程编号列表 
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															 		//只需要调整课程信息的课程编号列表 
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															 		List<Long> updateCourseScheduleIds = courseSchedules 
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															 		List<Long> updateCourseScheduleIds = courseSchedules 
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															 				.stream() 
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															 				.stream() 
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															@@ -561,12 +564,7 @@ public class CourseScheduleServiceImpl extends BaseServiceImpl<Long, CourseSched 
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															 		if(existCourseSchedules ==null || existCourseSchedules.size()==0){ 
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															 		if(existCourseSchedules ==null || existCourseSchedules.size()==0){ 
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															 			return null; 
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															 			return null; 
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															 		} 
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															 		} 
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															-		//新课程对应的班级编号列表 
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															-		List<Integer> newCourseScheduleClassGroupIds = courseSchedules 
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															-				.stream() 
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															-				.map(CourseSchedule::getClassGroupId) 
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															-				.distinct() 
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															-				.collect(Collectors.toList()); 
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															 		List<Long> existCourseScheduleIds = existCourseSchedules.stream() 
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															 		List<Long> existCourseScheduleIds = existCourseSchedules.stream() 
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															 				.map(CourseSchedule::getId) 
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															 				.map(CourseSchedule::getId) 
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															@@ -579,6 +577,14 @@ public class CourseScheduleServiceImpl extends BaseServiceImpl<Long, CourseSched 
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															 		}else{ 
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															 		}else{ 
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															 			allCourseSchedules = courseSchedules; 
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															 			allCourseSchedules = courseSchedules; 
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															 		} 
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															 		} 
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															+		//新课程对应的班级编号列表 
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															+		List<Integer> newCourseScheduleClassGroupIds = allCourseSchedules 
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															+				.stream() 
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															+				.map(CourseSchedule::getClassGroupId) 
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															+				.distinct() 
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															+				.collect(Collectors.toList()); 
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															 		//所有课程的班级编号 
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															 		//所有课程的班级编号 
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															 		List<Integer> classGroupIds = allCourseSchedules 
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															 		List<Integer> classGroupIds = allCourseSchedules 
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															 				.stream() 
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															 				.stream() 
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															@@ -621,7 +627,11 @@ public class CourseScheduleServiceImpl extends BaseServiceImpl<Long, CourseSched 
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															 				boolean isTeacherRepeat = false; 
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															 				boolean isTeacherRepeat = false; 
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															 				boolean isStudentRepeat = false; 
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															 				boolean isStudentRepeat = false; 
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															 				//检测老师冲突 
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															 				//检测老师冲突 
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															-				existCourseSchedule.setTeachingTeacherIdList(courseScheduleTeacherMap.get(existCourseSchedule.getId()).getIds()); 
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															+				if(courseScheduleTeacherMap.containsKey(existCourseSchedule.getId().intValue())){ 
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															+					existCourseSchedule.setTeachingTeacherIdList(courseScheduleTeacherMap.get(existCourseSchedule.getId().intValue()).getIds()); 
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															+				}else { 
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															+					existCourseSchedule.setTeachingTeacherIdList(classGroupTeachingTeacherMap.get(existCourseSchedule.getClassGroupId()).getIds()); 
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															+				} 
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															 				newCourseSchedule.setTeachingTeacherIdList(classGroupTeachingTeacherMap.get(newCourseSchedule.getClassGroupId()).getIds()); 
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															 				newCourseSchedule.setTeachingTeacherIdList(classGroupTeachingTeacherMap.get(newCourseSchedule.getClassGroupId()).getIds()); 
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															 				if(!CollectionUtils.isEmpty(newCourseSchedule.getTeachingTeacherIdList()) 
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															 				if(!CollectionUtils.isEmpty(newCourseSchedule.getTeachingTeacherIdList()) 
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															@@ -642,19 +652,23 @@ public class CourseScheduleServiceImpl extends BaseServiceImpl<Long, CourseSched 
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															 				//如果班级不同,则需要检测两个班级是否存在重复的学生 
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															 				//如果班级不同,则需要检测两个班级是否存在重复的学生 
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															 				List<ClassGroupStudentMapper> preClassGroupStudents=classGroupStudentsMap.get(newCourseSchedule.getClassGroupId()); 
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															 				List<ClassGroupStudentMapper> preClassGroupStudents=classGroupStudentsMap.get(newCourseSchedule.getClassGroupId()); 
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															 				List<ClassGroupStudentMapper> backClassGroupStudents=classGroupStudentsMap.get(existCourseSchedule.getClassGroupId()); 
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															 				List<ClassGroupStudentMapper> backClassGroupStudents=classGroupStudentsMap.get(existCourseSchedule.getClassGroupId()); 
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															-				//当前课程所在班级的学生编号列表 
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															-				List<Integer> preClassGroupStudentIds = preClassGroupStudents.stream() 
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															-						.map(ClassGroupStudentMapper::getUserId) 
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															-						.collect(Collectors.toList()); 
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															-				//后面一节课程所在班级的学生编号列表 
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															-				List<Integer> backClassGroupStudentIds = backClassGroupStudents.stream() 
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															-						.map(ClassGroupStudentMapper::getUserId) 
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															-						.collect(Collectors.toList()); 
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															-				List<Integer> repeatStudentIds = preClassGroupStudentIds.stream() 
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															-						.filter(backClassGroupStudentIds::contains) 
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															-						.collect(Collectors.toList()); 
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															-				if(!CollectionUtils.isEmpty(repeatStudentIds)){ 
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															-					isStudentRepeat = true; 
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															+ 
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															+				List<Integer> repeatStudentIds = new ArrayList<>(); 
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															+				if(classGroupStudentsMap.containsKey(newCourseSchedule.getClassGroupId()) && classGroupStudentsMap.containsKey(existCourseSchedule.getClassGroupId())) { 
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															+					//当前课程所在班级的学生编号列表 
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															+					List<Integer> preClassGroupStudentIds = preClassGroupStudents.stream() 
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															+							.map(ClassGroupStudentMapper::getUserId) 
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															+							.collect(Collectors.toList()); 
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															+					//后面一节课程所在班级的学生编号列表 
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															+					List<Integer> backClassGroupStudentIds = backClassGroupStudents.stream() 
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															+							.map(ClassGroupStudentMapper::getUserId) 
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															+							.collect(Collectors.toList()); 
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															+					repeatStudentIds = preClassGroupStudentIds.stream() 
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															+							.filter(backClassGroupStudentIds::contains) 
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															+							.collect(Collectors.toList()); 
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															+					if (!CollectionUtils.isEmpty(repeatStudentIds)) { 
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															+						isStudentRepeat = true; 
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															+					} 
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															 				} 
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															 				} 
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															 				if(!isTeacherRepeat && !isStudentRepeat){ 
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															 				if(!isTeacherRepeat && !isStudentRepeat){ 
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															 					continue; 
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															 					continue; 
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