|  | @@ -1048,6 +1048,10 @@ public class ActivityUserMapperServiceImpl extends BaseServiceImpl<Integer, Acti
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				|  |  |  
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				|  |  |  	@Override
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				|  |  |  	public void subCourseConvert(List<CourseScheduleStudentPayment> studentPayments, Integer studentId, Integer singleClassMinutes,Integer categoryId) {
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				|  |  | +		studentPayments = studentPayments.stream().filter(e->e.getActualPrice().compareTo(ZERO) > 0).collect(Collectors.toList());
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				|  |  | +		if(CollectionUtils.isEmpty(studentPayments)){
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				|  |  | +			return;
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				|  |  | +		}
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				|  |  |  		ActivityUserMapper activityUserMapper = new ActivityUserMapper();
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				|  |  |  		activityUserMapper.setReturnFee(false);
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				|  |  |  		activityUserMapper.setSingleCourseTime(singleClassMinutes);
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