修改excel导出

@@ -53,8 +53,8 @@ class Export
         }
 
         header('pragma:public');
-        header('Content-type:application/vnd.ms-excel;charset=utf-8;name="' . $fileName . '.xls"');
-        header("Content-Disposition:attachment;filename=$fileName.xls"); //attachment新窗口打印inline本窗口打印
+        header('Content-type:application/vnd.ms-excel;charset=utf-8;name="' . $fileName . '.xlsx"');
+        header("Content-Disposition:attachment;filename=$fileName.xlsx"); //attachment新窗口打印inline本窗口打印
         $writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($spreadsheet, 'Xlsx');
         $writer->save('php://output');
     }