Hi David, thank you very much for the time you took to answer this do you (or anybody in the mail-list) think there's a way to solve this problem? a solution is the one I've mentioned before: unpacking the jar classes and add them to the /WEB-INF/classes directory, and there is no problem when loading classes, but do you think there might be another solution, without unpacking jars?? thanks again.
Jose Maria. ---------- Original Message ---------------------------------- From: David Delbecq <[EMAIL PROTECTED]> Reply-To: "Tomcat Users List" <tomcat-user@jakarta.apache.org> Date: Thu, 06 Oct 2005 16:06:49 +0200 >Hi, > >all classes of a webapp which do not come from tomcat server itself >do share a common classloader which is an aggregation of the various >classes in all WEB-INF/lib/*.jar and in WEB-INF/classes/**/*.class > >If you get a NoClassDefFoundException, that probably mean you asked some >class in server classloader to load some other class (probably by >reflection) which >is located in WEB-INF/lib. That simply impossible to do because >classloaders use >a child to parent classloading delegation model, not a parent (server) >to child (webapp). > >Regards >David Delbecq >Jose Maria Ramirez Martinez a écrit : > >>Hi, everybody >> >>I have the next problem: >>A servlet calls a non-servlet class, and this non-servlet class imports >>classes from a jar file, >>but the classloader does not find the class from the jar file >>(so when I call the servlet from an internet browser, I get a >>NoClassDefFoundException) >> >>But if a servlet class imports the same classes from the jar, the class >>loader does find them... >>I've tried some ways to solve this problem, like: >> a) unpacking the classes from the jar (this works, but I had the problem >> that 2 different jars contained >>a file with the same name stored in the same directory, so one would replace >>the other, and the class fails) >> b) I thought it would be a security problem so I ran tomcat with a >> SecurityManager, but it didn't solve the >>problem.. >> >>does somebody has any idea why this is happening??? >>can somebody help me to solve this... thanks in advance >> >>Jose Maria >> >> >>___________________________________________________________ >>$0 Web Hosting with up to 200MB web space, 1000 MB Transfer >>10 Personalized POP and Web E-mail Accounts, and much more. >>Signup at www.doteasy.com >> >> >>--------------------------------------------------------------------- >>To unsubscribe, e-mail: [EMAIL PROTECTED] >>For additional commands, e-mail: [EMAIL PROTECTED] >> >> >> > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > ___________________________________________________________ $0 Web Hosting with up to 200MB web space, 1000 MB Transfer 10 Personalized POP and Web E-mail Accounts, and much more. Signup at www.doteasy.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
