对象Bean转xml时报com.sun.istack.inter

异常现象

HotelOtherCancelConfigEntity cancelConfigEntity = collect.get(0);
                CancelPenaltyType cancelPenalty = new CancelPenaltyType();
                AmountPercentType amountPercent = new RatePlanType.Guarantee.AmountPercent();
                amountPercent.setBasisType(cancelConfigEntity.getDeductionType() == 1 ? "FirstLast" : (cancelConfigEntity.getDeductionType() == 2 ? "FullStay" : ""));
                cancelPenalty.setAmountPercent(amountPercent);
                CancelPenaltyType.Deadline deadline = new CancelPenaltyType.Deadline();
                deadline.setOffsetDropTime("BeforeArrival");
                deadline.setOffsetTimeUnit(TimeUnitType.HOUR);
                Integer hours = calcCancelHours(cancelConfigEntity);
                deadline.setOffsetUnitMultiplier(hours);
                cancelPenalty.setDeadline(deadline);
                cancelPenaltyLst.add(cancelPenalty);

将
AmountPercentType amountPercent = new RatePlanType.Guarantee.AmountPercent();
改为
AmountPercentType amountPercent = new AmountPercentType ();