优惠券为空

cash-service/order-service/src/main/java/com/czg/service/order/service/impl/OrderInfoServiceImpl.java

@@ -466,7 +466,7 @@ public class OrderInfoServiceImpl extends ServiceImpl<OrderInfoMapper, OrderInfo
             Long key = entry.getKey();
             List<OrderDetail> value = entry.getValue();
             BigDecimal couponNum = BigDecimal.ZERO;
-            if (prodCouponMap.containsKey(key)) {
+            if (CollUtil.isNotEmpty(prodCouponMap) && prodCouponMap.containsKey(key)){
                 couponNum = new BigDecimal(prodCouponMap.get(key));
                 if (value.size() > 1) {
                     value.sort(Comparator.comparing(OrderDetail::getPrice));