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https://issues.apache.org/jira/browse/PDFBOX-3771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15990992#comment-15990992
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Tilman Hausherr commented on PDFBOX-3771:
-----------------------------------------
What you could do is to save into a {{ByteArrayOutputStream}} by changing this
code from the example:
{code}
public void signDetached(File inFile, File outFile, TSAClient tsaClient)
throws IOException
{
if (inFile == null || !inFile.exists())
{
throw new FileNotFoundException("Document for signing does not
exist");
}
FileOutputStream fos = new FileOutputStream(outFile);
// sign
try (PDDocument doc = PDDocument.load(inFile))
{
signDetached(doc, fos, tsaClient);
}
}
{code}
i.e. by changing what fos is. After that, save the content into your original
file. (Not a good idea if power fails at the wrong monent)
> Signing example does not work if inFile = outFile
> -------------------------------------------------
>
> Key: PDFBOX-3771
> URL: https://issues.apache.org/jira/browse/PDFBOX-3771
> Project: PDFBox
> Issue Type: Bug
> Components: Signing
> Affects Versions: 2.0.5
> Environment: Mac, JDK8
> Reporter: Manu Schiller
> Priority: Minor
>
> Hi,
> I tried using the Signature example
> (https://svn.apache.org/viewvc/pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/signature/)
> which works great for certifying pdfs.
> However if I want to certify and replace the original pdf without creating a
> new one (like foo_signed.pdf should only be foo.pdf), I get an exception:
> `Exception in thread "main" java.io.IOException: Error: End-of-File, expected
> line pdfbox`
> I invoked the method like this (L215 of CreateSignature.java):
> `signing.signDetached(inFile);`
> How would I change the example so that I can certify pdfs without creating
> copy files?
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