提交修改dubbo调用

sckw-modules/sckw-transport/src/main/java/com/sckw/transport/service/ParkingWalletFeeService.java

@@ -407,8 +407,8 @@ public class ParkingWalletFeeService {
 
         // 本次预计服务费 = 采购数量 * 实际计费单价，金额保留2位小数；开关关闭时固定返回0。
         BigDecimal estimatedServiceFee = chargeStrategySwitchOpen
-                ? param.getPurchaseQuantity().multiply(currentStrategyUnitFee).setScale(2, RoundingMode.HALF_UP)
-                : ZERO_AMOUNT;
+                ? formatMoney(param.getPurchaseQuantity().multiply(currentStrategyUnitFee))
+                : formatMoney(ZERO_AMOUNT);
         log.info("服务费预估金额计算完成，企业id:{}, 采购数量:{}, 实际计费单价:{}, 预计服务费:{}",
                 entId, param.getPurchaseQuantity(), currentStrategyUnitFee, estimatedServiceFee);
 
@@ -418,13 +418,23 @@ public class ParkingWalletFeeService {
                 entId, param.getPurchaseQuantity(), serviceFeeBalance, estimatedServiceFee, maxPurchaseQuantity);
 
         ParkingWalletFeeEstimateResp resp = new ParkingWalletFeeEstimateResp();
-        resp.setServiceFeeBalance(serviceFeeBalance);
+        resp.setServiceFeeBalance(formatMoney(serviceFeeBalance));
         resp.setEstimatedServiceFee(estimatedServiceFee);
         resp.setMaxPurchaseQuantity(maxPurchaseQuantity);
         log.info("服务费预估结束，企业id:{}, 响应结果:{}", entId, resp);
         return resp;
     }
 
+    /**
+     * 金额统一保留两位小数，确保 0 金额返回 0.00。
+     *
+     * @param amount 金额
+     * @return 两位小数金额
+     */
+    private BigDecimal formatMoney(BigDecimal amount) {
+        return Optional.ofNullable(amount).orElse(ZERO_AMOUNT).setScale(2, RoundingMode.HALF_UP);
+    }
+
 
     /**
      * 贸易订单下单应用收费策略并冻结服务费