fix(repair): 修复 OrderService.calculateDiscountPrice 的 double 精度丢失问题#25
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deibudei wants to merge 1 commit into
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fix(repair): 修复 OrderService.calculateDiscountPrice 的 double 精度丢失问题#25deibudei wants to merge 1 commit into
deibudei wants to merge 1 commit into
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Auto Repair
Session:
pr-precision-20260506-141121Plan
RepairPlan[repairTarget=修复 OrderService.calculateDiscountPrice 的 double 精度丢失问题, rootCauseHypothesis=方法将 BigDecimal 转为 double 进行中间计算，引入 IEEE 754 浮点精度误差，导致金额结果偏差。, suspectedFiles=[target-service/src/main/java/com/example/targetservice/service/OrderService.java, target-service/src/test/java/com/example/targetservice/service/OrderServicePrecisionTest.java], steps=[将 discountRate 转为 BigDecimal，全程使用 BigDecimal 算术：total.multiply(discountRateBD).multiply(BigDecimal.valueOf(quantity))。, 移除 double 中间变量 perItem，避免浮点精度损失。, 运行 target-service 测试验证精度修复。], testCommand=mvn -pl target-service test]
Review
Patch is limited to target-service and tests pass.