phpexcel 为何无法创建xlsx文件

header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');header('Content-Disposition: attachment;filename="fee_detail.xlsx"');header('Cache-Control: max-age=0'); $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');$objWriter->save( 'php://output');

header('Content-Type: application/vnd.ms-excel');header('Content-Disposition: attachment;filename="fee_detail.xls"');header('Cache-Control: max-age=0'); $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');$objWriter->save('php://output');

ini_set('display_errors', TRUE);ini_set('display_startup_errors', TRUE);