Did you restart Tomcat? Class reloading isn't always successful in Tomcat 3.2.x. Otherwise make sure the servlet compiled successfully. This isn't an error I encounter often enough to recall its typical causes.
Editing the web.xml to add a servlet mapping allows you to specify the URL you want to use to invoke a servlet. This is the expected way to invoke servlets in the Servlet 2.2 and later specs. Use of "/servlet" to invoke a servlet is not part of the spec, but is a extra feature provided by default. Cheers, Larry > -----Original Message----- > From: Ralf Praschak [mailto:[EMAIL PROTECTED]] > Sent: Thursday, December 20, 2001 10:17 AM > To: Tomcat Users List > Subject: RE: subfolder in WEB-INF > > > hello! > okay this url http://server/projekt/servlet/test.Hello works > but now i am > getting a 500 > > java.lang.NullPointerException > at java.lang.ClassLoader.resolveClass0(Native Method) > at java.lang.ClassLoader.resolveClass(ClassLoader.java:588) > at > org.apache.tomcat.loader.AdaptiveClassLoader.loadClass(Adaptiv > eClassLoader.j > ava:430) > at > org.apache.tomcat.loader.AdaptiveServletLoader.loadClass(Adapt > iveServletLoad > er.java:174) > at > org.apache.tomcat.core.ServletWrapper.loadServlet(ServletWrapp > er.java:265) > at > org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:289) > at org.apache.tomcat.core.Handler.service(Handler.java:254) > at > org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) > at > org.apache.tomcat.core.ContextManager.internalService(ContextM > anager.java:81 > 2) > at > org.apache.tomcat.core.ContextManager.service(ContextManager.java:758) > at > org.apache.tomcat.service.http.HttpConnectionHandler.processCo > nnection(HttpC > onnectionHandler.java:213) > at > org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoin > t.java:416) > at > org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPo > ol.java:501) > at java.lang.Thread.run(Thread.java:484) > > do i have to edit the web.xml somehow > Hello.class is just a simple hello world servlet ;( > > tnx ralf > > > >-----Original Message----- > >From: Larry Isaacs [mailto:[EMAIL PROTECTED]] > >Sent: Thursday, December 20, 2001 2:26 PM > >To: 'Tomcat Users List' > >Subject: RE: subfolder in WEB-INF > > > > > >The URL would be http://server/projekt/servlet/test.Hello > >if you don't want to use a servlet mapping in web.xml. > > > >Cheers, > >Larry > > > > -- > To unsubscribe: <mailto:[EMAIL PROTECTED]> > For additional commands: <mailto:[EMAIL PROTECTED]> > Troubles with the list: <mailto:[EMAIL PROTECTED]> > -- To unsubscribe: <mailto:[EMAIL PROTECTED]> For additional commands: <mailto:[EMAIL PROTECTED]> Troubles with the list: <mailto:[EMAIL PROTECTED]>
