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From GitBox <...@apache.org>
Subject [GitHub] [pdfbox-jbig2] Zardoz89 opened a new pull request #3: Fix pdfbox 4671
Date Mon, 21 Oct 2019 08:00:04 GMT
Zardoz89 opened a new pull request #3: Fix pdfbox 4671
URL: https://github.com/apache/pdfbox-jbig2/pull/3
   Fixes https://issues.apache.org/jira/browse/PDFBOX-4671
   Keeps being necessary to use [TwelveMomkeys Listener](https://github.com/haraldk/TwelveMonkeys#deploying-the-plugins-in-a-web-app),
but removes the random NoClassDefFoundError when the plugin it's running inside of a servlet
   Why was this happening ?
   Because the java service registry is "VM global", it doesn't by default work well with
servlet contexts. Servlet contexts dynamically loads and unloads classes (using a new class
loader per context). If you restart your application, old classes will by default remain in
memory forever. If a read is attempted using one of the remaining "old" Logger or Cache, weird
exceptions (like NullPointerExceptions when accessing static final initialized fields or NoClassDefFoundErrors
for uninitialized inner classes) may occur.

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