update

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

@@ -278,6 +278,13 @@ public class MusicGroupPaymentCalenderDetailServiceImpl extends BaseServiceImpl<
 			throw new BizException("当前缴费状态不能添加学生");
 		}
 		
+		//判断学生是否已存在
+		Set<Integer> userList = musicGroupPaymentCalenderDetailDao.queryStudentIds(musicGroupPaymentCalenderId);
+
+		if(Collections.disjoint(userList, userIdList) == false){
+			throw new BizException("操作失败：包含已存在的学员");
+		}
+		
 		List<MusicGroupPaymentCalenderCourseSettings> courseSettingsList = musicGroupPaymentCalenderCourseSettingsDao.getWithPaymentCalender(musicGroupPaymentCalenderId);
 		
 		BigDecimal totalPrice = new BigDecimal(0);