Merge branch 'musicgroup_0806'

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

@@ -341,7 +341,10 @@ public class StudentRegistrationServiceImpl extends BaseServiceImpl<Long, Studen
 
 		List<Long> orderIdList = studentPaymentOrderList.stream().map(t -> t.getId()).collect(Collectors.toList());
 
-		List<StudentPaymentOrderDetail> studentPaymentOrderDetailList = studentPaymentOrderDetailService.getOrderDetail(orderIdList);
+		List<StudentPaymentOrderDetail> studentPaymentOrderDetailList =new ArrayList<StudentPaymentOrderDetail>();
+		if(orderIdList != null && orderIdList.size() > 0){
+			studentPaymentOrderDetailList = studentPaymentOrderDetailService.getOrderDetail(orderIdList);
+		}
 
 		SubjectChange studentLastChange = subjectChangeDao.getStudentLastChange(studentId, musicGroupId);