重构实战-1.原则：有boolean的if else 可将if 和 else 封装为方法。2. 查看传入的Bean用了哪些数据，是否可减少数据。

 最终效果：   // 计算保险费并生成保险费域的FeeShareBenefitBO

        FeeShareBenefitBO fee = null;

        if (shareBenefitHistory == null) {

            shareBenefitLogger.debug(LogUtil.f("shareBenefitHistory:{},", JsonUtil.toJson(shareBenefitHistory)));

            //部分历史数据没有shareBenefitHistory

            fee = calcFeeShareBenefitBO(refundFeeBo, shareBenefitHistory);

        } else {

            fee = calcFeeShareBenefitBO(originalPay, shareBenefitResultOld, refundFeeBo);

        }

最初效果：

 

long calcRefundInsure = calcRefundInsure(refundFeeBo, getPayTotoalRemoveRisk(prRefOriginalPay),

                shareBenefitRule);

        FeeShareBenefitBO fee = new FeeShareBenefitBO();

        long shared = 0;

        long tipShared = 0;

        long insureFromCShared = 0;

        long insureFromTipShared = 0;

        long refundInsure = 0;

        if (shareBenefitHistory != null) {

            //1.计算普通退款中保险费要退多少

            if (refundFeeBo.getShared() > shareBenefitHistory.getTotalCommonShare()) {

                //退款比之前分润的大，保险费要退

                insureFromCShared = refundFeeBo.getShared() - shareBenefitHistory.getTotalCommonShare();

                shared = shareBenefitHistory.getTotalCommonShare();

            } else {

                shared = refundFeeBo.getShared();

            }

            //2.计算小费退款中保险费要退多少

            if (refundFeeBo.getTipShared() > shareBenefitHistory.getTotalTipShare()) {

                //退款比之前分润的大，保险费要退

                insureFromTipShared = refundFeeBo.getTipShared() - shareBenefitHistory.getTotalTipShare();

                tipShared = shareBenefitHistory.getTotalTipShare();

            } else {

                tipShared = refundFeeBo.getTipShared();

            }

            refundInsure = insureFromCShared + insureFromTipShared;

            // refundInsure+tipShared+shared=最初订单域的小费+普通分润总额

        } else {

long calcRefundInsure = calcRefundInsure(refundFeeBo, getPayTotoalRemoveRisk(prRefOriginalPay),

                shareBenefitRule);

            long refundInsureLeft = 0;

            if (refundFeeBo.getShared() > calcRefundInsure) {

                refundInsureLeft = 0;

                shared = refundFeeBo.getShared() - calcRefundInsure;

            } else {

                shared = 0;

                refundInsureLeft = calcRefundInsure - refundFeeBo.getShared();

            }

            tipShared = refundFeeBo.getTipShared() - refundInsureLeft;

            refundInsure = calcRefundInsure;

            // refundInsure+tipShared+shared=最初订单域的小费+普通分润总额

        }

        fee.setCommonShared(shared);

        fee.setInsure(refundInsure);

        fee.setTipShared(tipShared);

        fee.setUnshared(refundFeeBo.getUnshared());

        return fee;

    }

ShareBenefitHistoryDO shareBenefitHistory = shareBenefitHistoryService.getShareBenefitHistory(prRefOriginalPay

            .getPayId());

 private FeeShareBenefitBO calacFeeShareBenefitBO(FeeBO refundFeeBo, ShareBenefitHistoryDO shareBenefitHistory,

                                                     long calcRefundInsure) {

        FeeShareBenefitBO fee = new FeeShareBenefitBO();

        long shared = 0;

        long tipShared = 0;

        long insureFromCShared = 0;

        long insureFromTipShared = 0;

        long refundInsure = 0;

        if (shareBenefitHistory != null) {

            //1.计算普通退款中保险费要退多少

            if (refundFeeBo.getShared() > shareBenefitHistory.getTotalCommonShare()) {

                //退款比之前分润的大，保险费要退

                insureFromCShared = refundFeeBo.getShared() - shareBenefitHistory.getTotalCommonShare();

                shared = shareBenefitHistory.getTotalCommonShare();

            } else {

                shared = refundFeeBo.getShared();

            }

            //2.计算小费退款中保险费要退多少

            if (refundFeeBo.getTipShared() > shareBenefitHistory.getTotalTipShare()) {

                //退款比之前分润的大，保险费要退

                insureFromTipShared = refundFeeBo.getTipShared() - shareBenefitHistory.getTotalTipShare();

                tipShared = shareBenefitHistory.getTotalTipShare();

            } else {

                tipShared = refundFeeBo.getTipShared();

            }

            refundInsure = insureFromCShared + insureFromTipShared;

            // refundInsure+tipShared+shared=最初订单域的小费+普通分润总额

        } else {

            long refundInsureLeft = 0;

            if (refundFeeBo.getShared() > calcRefundInsure) {

                refundInsureLeft = 0;

                shared = refundFeeBo.getShared() - calcRefundInsure;

            } else {

                shared = 0;

                refundInsureLeft = calcRefundInsure - refundFeeBo.getShared();

            }

            tipShared = refundFeeBo.getTipShared() - refundInsureLeft;

            refundInsure = calcRefundInsure;

            // refundInsure+tipShared+shared=最初订单域的小费+普通分润总额

        }

        fee.setCommonShared(shared);

        fee.setInsure(refundInsure);

        fee.setTipShared(tipShared);

        fee.setUnshared(refundFeeBo.getUnshared());

        return fee;

    }