是否可以使用php / jsp从pdf文件中获取元数据

Actually I'm trying to get the date of creation, author, title, last modified date etc from pdf which will be uploaded to the server and then store these metadata value into the database. Is there any simple implementation to do it which will be applicable for all pdf files.

Use the Zend_pdf Framework:

$pdf = Zend_Pdf::load($pdfFilePath);

echo $pdf->properties['Title'] . "
";
echo $pdf->properties['Author'] . "
";

Limitation: Works only on unencrypted files smaller than 16MB.