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关于优惠券金额分摊算法的误差 #356

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WellJay opened this issue Jun 4, 2020 · 2 comments
Open

关于优惠券金额分摊算法的误差 #356

WellJay opened this issue Jun 4, 2020 · 2 comments

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@WellJay
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WellJay commented Jun 4, 2020

OmsPortalOrderServiceImpl.calcPerCouponAmount()
特殊情况无法分摊平均，

商品 10、10、10
总价 30元
优惠金额10元；

(10 / 30) * 10 = 3.330

三个优惠加起来9.990元。
@freepcbird
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加一小段逻辑，分配之后，如果分摊金额不足优惠金额，把差值加到某个商品上，比如第一个，或者最后一个

@wangjia2016
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他这里面都是满减券，正常应该还有折扣券，抵扣券这种

@jifeng-l jifeng-l mentioned this issue May 16, 2024
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@WellJay @wangjia2016 @freepcbird