fix(repair): 修复 OrderService.calculateDiscountPrice 的 double 精度丢失问题#28
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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#28deibudei wants to merge 1 commit into
deibudei wants to merge 1 commit into
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Auto Repair
Session:
pr-precision-20260506-152229Plan
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，导致 IEEE 754 浮点精度误差，产生 199.96000000000004。, 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 参数改为 BigDecimal，或在方法内用 BigDecimal.valueOf(discountRate) 转换。, 全程使用 BigDecimal 的 multiply 和 setScale 进行精确十进制运算，避免 double 中间值。, 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.