我现在开始工作了！借助此 phpexcel可以下载

I got it working now! Thanks to this phpexcel to download

我将代码更改为此:

// Save Excel 2007 file
#echo date('H:i:s') . " Write to Excel2007 format\n";
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
ob_end_clean();
// We'll be outputting an excel file
header('Content-type: application/vnd.ms-excel');
header('Content-Disposition: attachment; filename="payroll.xlsx"');
$objWriter->save('php://output');

我认为这行:

ob_end_clean();

解决了我的问题.