阅读使用iTextSharp的/修改PDF元数据 [英] Read/Modify PDF Metadata using iTextSharp

问题描述

我尝试使用iTextSharp的读取/修改PDF的元数据。我想通了如何使用pdfreader和pdfstamper去做。我在想，如果我还可以读取/修改像XMP Photoshop的命名空间中的版权信息和其他一些额外的元数据信息。

I am trying to use iTextSharp to read/modify PDF metadata. I figured out how to do it using pdfreader and pdfstamper. I was wondering if I could also read/modify additional metadata information like copyright information and few others within the XMP photoshop namespace.

我将不胜AP preciate任何指针的解决方案。

I would greatly appreciate any pointers to the solution.

感谢您，
Murugesh。

Thank you, Murugesh.

推荐答案

您可以使用`PdfReader读的元数据。我读过的元数据是这样的：

You can read metadata using `PdfReader'. I've read metadata like this:

PdfReader reader = new PdfReader("HelloWorldNoMetadata.pdf");
string s = reader.Info["Author"];

您可以尝试 iTextSharp.text.xml.xmp.XmpWriter 类写的元数据。我从来没有做过，但我发现这个code 如下：

You can try the iTextSharp.text.xml.xmp.XmpWriter class to write metadata. I've never done it but I found this code below:

PdfReader reader = new PdfReader("HelloWorldNoMetadata.pdf");
PdfStamper stamper = new PdfStamper(reader,
 new FileOutputStream("HelloWorldStampedMetadata.pdf"));
HashMap info = reader.getInfo();
info.put("Author", "Bruno Lowagie");
info.put("Title", "Hello World stamped");
stamper.setMoreInfo(info);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
XmpWriter xmp = new XmpWriter(baos, info);
xmp.close();
stamper.setXmpMetadata(baos.toByteArray());
stamper.close();

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