fix(marketing): 修正满减券优惠计算逻辑

src/main/java/com/xynet/marketing/service/factory/coupon/merc/impl/base/MercCouponFactoryBase.java

@@ -368,11 +368,13 @@ public class MercCouponFactoryBase extends ServiceImpl<MercCouponMapper, MercCou
                     BigDecimal zje = new BigDecimal(type1Amount);
                     //总优惠
                     BigDecimal zyh = new BigDecimal(priceOnsaleType1);
-                    //计算公式：(单价*数量*总优惠)/总金额
-                    Integer priceOnsale = promotionPriceOnsale.multiply(num).multiply(zyh).divide(zje).setScale(0, RoundingMode.CEILING).intValue();
-                    BigDecimal subtract = promotionPriceOnsale.subtract(new BigDecimal(priceOnsale)).divide(new BigDecimal(100)).multiply(new BigDecimal(goods.getInt("num")));
+                    //计算公式：(单价*数量/总金额*总优惠)
+                    Integer goodsYh = promotionPriceOnsale.multiply(num).divide(zje, 2, BigDecimal.ROUND_HALF_UP).multiply(zyh).setScale(0, RoundingMode.CEILING).intValue();
+
+                    Integer priceOnsale = promotionPriceOnsale.multiply(num).subtract(new BigDecimal(goodsYh)).intValue();
+
                     goods.set("priceOnsale", priceOnsale);
-                    goods.set("msg", goods.getString("msg") + "满减券减：" + subtract + "元;");
+                    goods.set("msg", goods.getString("msg") + "满减券减：" + (goodsYh * 0.01) + "元;");
                 }
             }
         }
@@ -380,4 +382,16 @@ public class MercCouponFactoryBase extends ServiceImpl<MercCouponMapper, MercCou
         param.put("goodsList", goodsList);
         return param;
     }
+
+    public static void main(String[] args) {
+        int num = 2;
+        int zje = 425;
+        int price = 425;
+        int zyh = 200;
+
+        int i = (price * num / zje) * zyh;
+        System.out.println(i);
+
+
+    }
 }