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https://issues.apache.org/jira/browse/PDFBOX-5470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17561889#comment-17561889
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Gilad Denneboom commented on PDFBOX-5470:
-----------------------------------------
I added it manually and it converted the whole string to Unicode, but also
inserted the space character twice, for some reason...
Code: target.setFilename("\uFEFF" + key);
Result:
!image-2022-07-03-17-31-04-424.png!
> PDActionEmbeddedGoTo does not accept a Destination with a page number or
> string
> -------------------------------------------------------------------------------
>
> Key: PDFBOX-5470
> URL: https://issues.apache.org/jira/browse/PDFBOX-5470
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.26
> Reporter: Gilad Denneboom
> Assignee: Tilman Hausherr
> Priority: Minor
> Fix For: 2.0.27, 3.0.0 PDFBox
>
> Attachments: EmbeddedActionTest-1.java, LinkTest.pdf,
> LinkTest_Acrobat.pdf, LinkTest_edited.pdf, StackTrace.txt,
> image-2022-07-03-17-30-29-113.png, image-2022-07-03-17-31-04-424.png,
> screenshot-1.png
>
>
> According to Table 202 of the PDF 32000-1:2008 specs, the P key under the
> Target Directory of an Embedded Go-To Action is an "integer or byte string",
> with the following description "If the value is an integer, it specifies the
> page number (zero-based) in the current document containing the file
> attachment annotation. If the value is a string, it specifies a named
> destination in the current document that provides the page number of the file
> attachment annotation."
> However, the current implementation of PDActionEmbeddedGoTo does not accept
> using the setPageNumber command by itself when setting the Destination
> dictionary, and throws an IllegalArgumentException unless setPage is used to
> set the target page as a PDPage object, which is not specified in the
> documentation. Also, there doesn't seem to be a way to specify the target as
> a string, if a named destination is to be used.
> This applies to both the Destination dictionary and the Target Directory, but
> when creating such a link in Acrobat the Target Directory does not contain a
> P value at all, only the Destination dictionary does, and in the form of a
> number. This should be possible to replicate using PDFBox.
>
> Attached are a sample file with a pre-existing link and a PDF attachment, the
> code trying to set that link's action to open the attachment on page 3, and
> the resulting error message stack trace.
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