refactor:修改供应商控制器导入方法代码不规范问题

backend/modules/goods/controllers/SupplierController.php

@@ -8,6 +8,7 @@ use backend\modules\goods\models\searchs\SupplierSearch;
 use yii\web\Controller;
 use yii\web\NotFoundHttpException;
 use yii\filters\VerbFilter;
+use iron\widget\Excel;
 
 /**
  * SupplierController implements the CRUD actions for Supplier model.
@@ -140,7 +141,7 @@ class SupplierController extends Controller
         } else {
             $dataProvider = $searchModel->search($params);
         }
-    \iron\widget\Excel::export([
+        Excel::export([
             'models' => $dataProvider->getModels(),
             'format' => 'Xlsx',
             'asAttachment' => true,