embedded tomcat 5 and classloading

[Yanick Duchensne]

To embed Tomcat 5, I’ve followed the explanations at the following: http://www.onjava.com/pub/a/onjava/2002/04/03/tomcat.html   I register the manager webapp that comes with the Tomcat embedded distribution as follows:     tc.registerWAR("/manager", new URL("file:/" + dir + "/webapps/manager"));   The manager webapp has the catalina-manager.jar file in its WEB-INF/lib directory.  Yet, at init time, the webapp can’t find a class that is in this jar file. I get the following:   java.lang.ClassNotFoundException: org.apache.catalina.manager.HTMLManagerServlet         java.net.URLClassLoader$1.run(Unknown Source)         java.security.AccessController.doPrivileged(Native Method)         java.net.URLClassLoader.findClass(Unknown Source)         java.lang.ClassLoader.loadClass(Unknown Source)         sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)         java.lang.ClassLoader.loadClass(Unknown Source)         org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)         org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)         org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)         org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)         org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)         org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)   From the stack, it seems that the system classloader is used (no specific classloader seems to have been assigned to the webapp). If I put the catalina-manager.jar file in the path that is “seen” by the system classloader, then all is fine.   My question is: if Tomcat does not assign a classloader to my webapp (so that classes in WEB-INF are properly loaded), is there a way to do it programatically?   Thanks!

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