修改订单还原库存

ship-module-trade/ship-module-trade-biz/src/main/java/com/yc/ship/module/trade/utils/BeanUtils.java

@@ -21,6 +21,9 @@ public class BeanUtils {
      * @return
      */
     public static <T> String getChangedFields(T newBean, T oldBean) {
+        if (newBean == null || oldBean == null) {
+            return "";
+        }
         Field[] fields = newBean.getClass().getDeclaredFields();
         StringBuilder builder = new StringBuilder();
         for (Field field : fields) {