phpexcel导出文件后，wps能用 excel打开乱码解决

 public function output($file_name){ ???????//直接输出到浏览器 ???????header("Pragma: public"); ???????header("Expires: 0"); ???????header("Cache-Control:must-revalidate, post-check=0, pre-check=0"); ???????header("Content-Type:application/force-download"); ???????header("Content-Type:application/ms-execl"); ???????header("Content-Type:application/octet-stream"); ???????header("Content-Type:application/download"); ???????header(‘Content-Disposition:attachment;filename="‘.$file_name); ???????header("Content-Transfer-Encoding:binary"); ???????// ???????$objWriter = ?new \PHPExcel_Writer_Excel2007($this->_obj); ?直接使用会导致wps能用，excel打开报错，产生乱码 ???????$objWriter = \PHPExcel_IOFactory::createWriter($this->_obj, ‘Excel5‘); //下面的用法就能解决 ???????$objWriter->save(‘php://output‘); ???}