锚定到文档附件的链接 [英] Anchor link to document attachment

问题描述

如何使用iText在文档的附件上设置引用或iText锚?

How can I set a reference or an iText anchor to an attachment on my document using iText?

推荐答案

如果您希望锚点打开任何类型的附件:不用担心，ISO-32000-1(如果您不知道，则为PDF参考) )不支持它.如果您希望锚点打开PDF附件，请使用GoToE注释.我引用ISO-32000-1的12.6.4.4节:

If you want an Anchor to open any type of attachment: forget about it, ISO-32000-1 (that's the PDF reference in case you didn't know) doesn't support it. If you want an Anchor to open a PDF attachment: use a GoToE annotation. I quote section 12.6.4.4 of ISO-32000-1:

嵌入式的go-to动作(PDF 1.6)与远程go-to动作相似，但是允许跳转到另一个PDF文件中嵌入的PDF文件或从其中跳出.嵌入式文件可能与文件附件注释或EmbeddedFiles名称树中的条目相关联.

An embedded go-to action (PDF 1.6) is similar to a remote go-to action but allows jumping to or from a PDF file that is embedded in another PDF file. Embedded files may be associated with file attachment annotations or with entries in the EmbeddedFiles name tree.

在iText中，PdfAction类具有不同的gotoEmbedded()方法.阅读iText in Action-Second Edition的p538，以了解如何使用这些方法.

In iText, the PdfAction class has different gotoEmbedded() methods. Read p538 of iText in Action - Second Edition to find out how to use these methods.

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