RE: NoClassDefFoundError: HttpServlet
> From: Ladislav Gaspar [mailto:ladislav.gas...@it-vision.com] > Subject: AW: NoClassDefFoundError: HttpServlet > > The sample servlets work. Good - which says the problem is isolated to your webapp, so that narrows the focus. > But what could that be? It looks like somewhere in your webapp, you're carrying around a second copy of HttpServlet. You'll need to go through all your jars, looking for classes that duplicate ones that Tomcat provides. Also look in the META-INF/MANIFEST.MF entries of each jar, to see if there's a Class-Path entry that links to other jars it shouldn't. - 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
RE: NoClassDefFoundError: HttpServlet
> From: Ladislav Gaspar [mailto:ladislav.gas...@it-vision.com] > Subject: AW: NoClassDefFoundError: HttpServlet > > Sorry for the misinformation. The the servlet-api.jar is in > $catalina_home/lib. The %CLASSPATH% is not adjusted The symptoms are still identical with those that appear when servlet-api.jar is in WEB-INF/lib or otherwise appears in multiple places in a given branch of the classloader tree. Note that the conflicting servlet classes might also be hidden inside a jar of a different name, such as j2ee.jar. Do the sample servlet and JSP apps that come with Tomcat work? If so, the problem is inside your webapp; if not, then there's another copy of the servlet classes lurking somewhere visible to Tomcat, perhaps in the endorsed directory. - 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
Re: NoClassDefFoundError: HttpServlet
2009/1/30 Ladislav Gaspar : > > > As I wrote in the original post >>(I've cleaned up the classpath, there are no duplicate servlet-api.jar files >>around) > > The servlet-api.jar is there and it's also in the classpath. (in > $catalina_home/lib) > I do not understand. "is there and it's also" It should be in one place exactly. And it should NOT be mentioned in any %CLASSPATH% variable (you should not adjust %CLASSPATH%, as it breaks classloading hierarchy). Also, how you are starting Tomcat (service? bat file? from inside an IDE ?), and at what exact moment (at what step?, what you are doing?) the message is displayed? Also, the stacktrace that you cited - is it from the log file? Can you provide a longer stacktrace? I am wondering where that class loading is called from. Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: NoClassDefFoundError: HttpServlet
Ladislav Gaspar wrote: [...] What strikes me as very strange is that in the error message: java.lang.NoClassDefFoundError: HttpServlet there is no package name in HttpServlet (that's why the ClassLoader can't find the Class, I suppose). Has anyone got an idea what could be wrong? No, but to this beginner, that sounds like a pretty basic class to be missing. Must take quite a bit out of the functionality of Tomcat, no ? ;-) - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
