update

edu-user/edu-user-biz/src/main/java/com/keao/edu/user/service/impl/ExamRoomStudentRelationServiceImpl.java

@@ -273,6 +273,9 @@ public class ExamRoomStudentRelationServiceImpl extends BaseServiceImpl<Long, Ex
 		for (Map.Entry<Integer, List<ExamRegistration>> subjectRegistEntry : subjectRegistMap.entrySet()) {
 			List<ExamRegistration> subjectRegists = subjectRegistEntry.getValue();
 			List<ExamRoom> subjectRooms = subjectExamRoomMap.get(subjectRegistEntry.getKey().toString());
+			if(CollectionUtils.isEmpty(subjectRooms)){
+				continue;
+			}
 
 			Set<Long> roomIds = subjectRooms.stream().map(ExamRoom::getId).collect(Collectors.toSet());
 			//未排考学员可排考考场学员