Order for pick up of classes of WEB-INF/lib/*.jars in a WAR

[Vishal Saxena]

hi all,
Consider, for e.g, the class org.apache.xerces.dom.DeferredTextImpl is present in both xmlx.jar and a01_topllink3.6.3.toplinkall.jar; if I were to use classpath I would mention the xmlx.jar before the a01_topllink3.6.3.toplinkall.jar and have the class picked from that; but if it's a web application deployed as a WAR in Weblogic6.1, and both these jars are at WEB-INF/lib inside the WAR, how to specify the order ?
I tried specifying the order in META-INF/Manifest.mf and warring it too, along with the rest of the application.
It's impending for me to find a solution to it, so plz treat it on a priority basis.
[Tavant Technologies, Bangalore India. [email protected] ]

[Ashish Pagare]

As per Servlet specifications, the classloader should behave like this:
The web application classloader must load classes from the WEB-INF/ classes directory first, and then from library JARs in the WEB-INF/lib directory.
SO for the time being you can extract the xmlx.jar in the classes folder and remove it from the lib folder. I am not 100% sure about it but you can give it a try.
Second solution could be to add the xmlx.jar in the weblogic system classpath instead of keeping it in the lib folder, that way when ever you app look for class org.apache.xerces.dom.DeferredTextImpl class the web app classloader will check this file in the system (parent) classloader and will load it from xmlx.jar file for you.
HTH.

[Marcos Maia]

Hi,
u will find information on weblogic classloading here , I believe this should help u.
regards.