IE浏览器中文乱码

application/admin/controller/Res.php

@@ -329,9 +329,11 @@ class Res extends Backend
         }
         //excel文件格式
         $filename = '数据报告'.date('ymdhis',time()).'.xlsx';
+        $filename = iconv("utf-8","gb2312",$filename);
         header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
         header('Content-Disposition: attachment;filename="'.$filename.'"');
         header('Cache-Control: max-age=0');
+        header("Content-Type:text/html;charset=utf-8");
         $writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($objexcel, 'Xlsx');
         $writer->save('php://output');
         exit;