创建PHPExcel程序后，最后一步是保存工作表，为此，我想应用这些规则以在Excel2007中生成文件:header('Content-Type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');header('Content-Disposition:attachment;filename="workbook1.xlsx"');header('Cache-Control:max-age=0');$objWriter=PHPExcel_IOFactory::createWriter($objPHPEx