Browse - Programming Tips - Why is Jetty giving NoClassDefFoundError exception on some pages
Q. Why is Jetty giving NoClassDefFoundError exception on some pages
after my webapp has run for a while?
A. As you have probably read by now this error occurs when a
class that existed at compile time can not be found at run time.
Jetty unzips your .class files from your .war into /tmp/jetty*
For me the problem was that tmpwatch would delete rarely used .class
files from there after a while!
The solution is easy once you know the problem.
If you have /etc/tmpfiles.d ...
Create /etc/tmpfiles.d/jetty and add:
If you have /etc/cron.daily/tmpwatch.conf ...
Add -X /tmp/jetty*
(Notice that is an uppercase -X)
Or change your Jetty configuration to unzip in a diffrent folder.