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Hudson/Ant issue with Websphere Application Server 7 [message #1357286]

Thu, 15 May 2014 12:56

Keith Zalinger

Messages: 3
Registered: May 2014

Junior Member

Hello,

Trying to start up Hudson3 war which is installed on WAS 7.0.0.25. I'm seeing the following error message:

"We detected that your servlet container is loading an older version of Ant by itself, thereby preventing Hudson from loading its own newer copy. (Ant classes are loaded from bundleresource://64/org/apache/tools/ant/types/FileSet.class)
Perhaps can you override Ant in your container by copying one from Hudson's WEB-INF/lib, or can you set up the classloader delegation to child-first so that Hudson sees its own copy first?"

Previous searches have pointed out that setting the classloader to child-first will resolve this, at least for WAS6. This does not work for me with WAS7.

Has anyone else run into this that may have discovered another solution? I don't manage the WAS environment, and am not entirely sure how to get at the Ant classes.

Thanks,

-Keith

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Re: Hudson/Ant issue with Websphere Application Server 7 [message #1387247 is a reply to message #1357286]

Tue, 24 June 2014 21:20

Pankaj Patni

Messages: 1
Registered: June 2014

Junior Member

I am facing the same issue, when installed hudson-3.1.2.war on IBM Websphere 8.5.5.0 Crying or Very Sad

Below is the error message shown on the screen :

We detected that your servlet container is loading an older version of Ant by itself, thereby preventing Hudson from loading its own newer copy. (Ant classes are loaded from bundleresource://129.fwk1485515211:4/org/apache/tools/ant/types/FileSet.class)
Perhaps can you override Ant in your container by copying one from Hudson's WEB-INF/lib, or can you set up the classloader delegation to child-first so that Hudson sees its own copy first?

Please let me know, if we have a solution for this here.
Thanks in advance.
Pankaj

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Re: Hudson/Ant issue with Websphere Application Server 7 [message #1387771 is a reply to message #1387247]

Wed, 25 June 2014 15:15

Keith Zalinger

Messages: 3
Registered: May 2014

Junior Member

Hi Pankaj,

I was able to resolve this by having Hudson reference it's Ant jars in a sharedLib. The Websphere server was grabbing old Ant jars from somewhere, but not of my WAS support people could find them, so having the sharedLib with the jars I wanted and child first (or Parent-last, if you prefer) solved the problem.

-Keith

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