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https://issues.apache.org/jira/browse/PDFBOX-5758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17813894#comment-17813894
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Axel Howind commented on PDFBOX-5758:
-------------------------------------
Sorry, this fixes only part of the problem. I will create an updated patch.
> ExceptionInInitializerError when unmapping is not supported
> -----------------------------------------------------------
>
> Key: PDFBOX-5758
> URL: https://issues.apache.org/jira/browse/PDFBOX-5758
> Project: PDFBox
> Issue Type: Bug
> Components: IO
> Reporter: Axel Howind
> Priority: Major
> Labels: patch
> Attachments:
> PDFBOX-5758__ExceptionInInitializerError_when_unmapping_is_not_supported.patch
>
>
> When unmapping is not supported, PdfBox throws an ExceptionInInitializerError
> that is not recoverable. The reason is that in IOUtils, the UNMAPPER static
> field is initialized before the Logger is created and when the unmapper can
> not be created, PdfBox tries to write an error message to the log:
>
> {code:java}
> public final class IOUtils
> {
> ...
> static
> {
> UNMAPPER = Optional.ofNullable(AccessController
> .doPrivileged((PrivilegedAction<Consumer<ByteBuffer>>)
> IOUtils::unmapper));
> }
> /**
> * Log instance.
> */
> private static final Logger LOG = LogManager.getLogger(IOUtils.class);
> ...
> private static Consumer<ByteBuffer> unmapper()
> {
> final Lookup lookup = lookup();
> try
> {
> ...
> }
> catch (SecurityException se)
> {
> LOG.error(
> "Unmapping is not supported because of missing permissions.
> Please grant at least the following permissions:
> RuntimePermission(\"accessClassInPackage.sun.misc\") "
> + " and ReflectPermission(\"suppressAccessChecks\")",
> se);
> }
> catch (ReflectiveOperationException | RuntimeException e)
> {
> LOG.error("Unmapping is not supported.", e);
> }
> return null;
> }{code}
>
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