> From: Pankaj Tandon [mailto:pankajtan...@gmail.com] > Subject: Using JMX with Tomcat: classloading issues > > Because rt.jar is (probably) used by the bootstrap classloader, > I HAVE to include weblogic.jar in the CATALINA_HOME/common/lib > directory.
Yes, rt.jar is handled by the bootstrap classloader. Why do you think that requires placing weblogic.jar in common/lib? It should work properly in your webapp's WEB-INF/lib, which would be the preferred location. However, weblogic.jar may contain classes that Tomcat already supplies (notably the ones in servlet-api.jar), so these would need to be removed from weblogic.jar before you can use it anywhere. > I can get the JMX part of the solution to work because both, rt.jar and > weblogic.jar are loaded by the same (system) classloader. That statement is also not true. As previously established, rt.jar is handled by the bootstrap classloader, while jars in common/lib are handled by Tomcat's common classloader. > But then my Jython classes do not work because jython.jar is tucked > away in the webapp's WEB-INF/lib dir of the webapp and my Jython > solution needs classes from weblogic.jar which is loaded by the > system classloader and hence in a different namespace. I think you're misinterpreting whatever symptoms you're encountering. None of what you describe so far is a problem, although you do have some misconceptions about how classloading in Tomcat works. What symptoms are you seeing? (You never actually said.) - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
