新增塔型默认值

src/main/java/com/macro/mall/tiny/modules/business/model/TowerExcelModel.java

@@ -19,8 +19,8 @@ public class TowerExcelModel extends BaseRowModel implements Serializable {
     private String lonLat;
 
     @ExcelProperty(value = "型号", index = 3)
-    private String shape;
+    private String shape = "";
 
     @ExcelProperty(value = "金具串型号", index = 4)
-    private String hardware;
+    private String hardware = "";
 }