https://issues.apache.org/bugzilla/show_bug.cgi?id=55943
Bug ID: 55943
Summary: Provide a way prevent looking at the System
classloader before the webapp classloaders
Product: Tomcat 7
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: chris.d...@gmail.com
I would like a way to prevent Tomcat from checking the System classloader
before the webapp classloaders. This would be useful when using the embedded
Tomact API to produce isolated servlet containers.
I ran in to some difficulty with this when I was adding Tomcat support to the
SBT (Simple Build Tool) plugin:
https://github.com/JamesEarlDouglas/xsbt-web-plugin
In particular I had an issue where SBT includes a version of the Scala standard
library, on the system classpath, that has been run through Proguard. This
was conflicting with web applications that were including their own version of
the Scala standard library. I was eventually able to work around this using
this hack:
https://github.com/JamesEarlDouglas/xsbt-web-plugin/commit/f8a9b149f0c7c87d7b6e8f862c493841d82ad90a
However, it would be nice if there was a way to accomplish this that didn't
involve such a hack.
I would be happy to submit a patch for this. However, I would like some
guidence on how the API should be changed to accomplish this. Perhaps a new
flag on the WebappLoader class?
Thanks
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