Hi, I created my own realm by extending UserDatabaseRealm. But when I start the tomcat server, I get the following exception. If I use UserDatabaseRealm, everything works fine. That means Tomcat can and does load the UserDatabaseRealm class without any problem.
java.lang.NoClassDefFoundError: org/apache/catalina/realm/UserDatabaseRealm at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:537) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123) at java.net.URLClassLoader.defineClass(URLClassLoader.java:251) at java.net.URLClassLoader.access$100(URLClassLoader.java:55) at java.net.URLClassLoader$1.run(URLClassLoader.java:194) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:187) at org.apache.catalina.loader.StandardClassLoader.findClass( StandardClassLoader.java:485) at org.apache.catalina.loader.StandardClassLoader.loadClass( StandardClassLoader.java:820) at org.apache.catalina.loader.StandardClassLoader.loadClass( StandardClassLoader.java:721) at org.apache.catalina.loader.StandardClassLoader.loadClass( StandardClassLoader.java:803) at org.apache.catalina.loader.StandardClassLoader.loadClass( StandardClassLoader.java:721) at org.apache.commons.digester.ObjectCreateRule.begin(ObjectCreateRule.java :252) at org.apache.commons.digester.Rule.begin(Rule.java:200) at org.apache.commons.digester.Digester.startElement(Digester.java:1273) at org.apache.catalina.util.CatalinaDigester.startElement( CatalinaDigester.java:65) at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement (UnknownSource) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.digester.Digester.parse(Digester.java:1548) at org.apache.catalina.startup.Catalina.load(Catalina.java:489) at org.apache.catalina.startup.Catalina.load(Catalina.java:528) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java :39) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:250) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:424) java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java :39) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:250) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:424) Caused by: java.lang.NoClassDefFoundError: org/apache/catalina/realm/UserDatabaseRealm at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:537) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123) at java.net.URLClassLoader.defineClass(URLClassLoader.java:251) at java.net.URLClassLoader.access$100(URLClassLoader.java:55) at java.net.URLClassLoader$1.run(URLClassLoader.java:194) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:187) at org.apache.catalina.loader.StandardClassLoader.findClass( StandardClassLoader.java:485) at org.apache.catalina.loader.StandardClassLoader.loadClass( StandardClassLoader.java:820) at org.apache.catalina.loader.StandardClassLoader.loadClass( StandardClassLoader.java:721) at org.apache.catalina.loader.StandardClassLoader.loadClass( StandardClassLoader.java:803) at org.apache.catalina.loader.StandardClassLoader.loadClass( StandardClassLoader.java:721) at org.apache.commons.digester.ObjectCreateRule.begin(ObjectCreateRule.java :252) at org.apache.commons.digester.Rule.begin(Rule.java:200) at org.apache.commons.digester.Digester.startElement(Digester.java:1273) at org.apache.catalina.util.CatalinaDigester.startElement( CatalinaDigester.java:65) at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement (UnknownSource) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.digester.Digester.parse(Digester.java:1548) at org.apache.catalina.startup.Catalina.load(Catalina.java:489) at org.apache.catalina.startup.Catalina.load(Catalina.java:528) ... 6 more
