pdf - 是否可以创建不可见的 XFA 表单？

Question

我想创建一个包含 XFA 数据的 PDF，但我不希望在查看 PDF 时看到 XFA 数据，但是，我希望可以通过以下代码访问它:

ByteArrayOutputStream baos = new ByteArrayOutputStream();       
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, baos);
AcroFields form = stamper.getAcroFields();
XfaForm xfa = form.getXfa();

我该怎么做？

谢谢

Answer 1

显然，根据 XML 表单架构 (XFA) 规范版本 3.3，我的要求是可行的。它可以使用 XFAF 来完成。在第 20 页的 'The Relationship between XFA and PDF' 部分下，它说:

There is overlapping functionality between XFA and PDF. However the two grammars serve different purposes. XFA has a more abstract view of a form than PDF. XFA concentrates on the logic of a form whereas PDF concentrates on the appearance. However it is possible to combine the two. When the two are combined the result is a form in which each page of the XFA form overlays a PDF background. This architecture is sometimes referred to as XFAF (XFA Foreground).