I'm getting a class cast exception when starting up tomcat 7.0.1. I've migrated from 6.0.18 to 7.0.1. I got the same error when migrating directly to 7.0.4. The error is:
SEVERE: Begin event threw exception Throwable occurred: java.lang.ClassCastException: org.apache.catalina.deploy.SecurityConstraint incompatible with org.apache.catalina.deploy.SecurityConstraint at org.apache.catalina.startup.SetAuthConstraintRule.begin(WebRuleSet.java:745) at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1282) at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1543) at org.apache.catalina.startup.ContextConfig.parseWebXml(ContextConfig.java:1686) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1201) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:874) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317) . . . Jun 11, 2013 2:17:07 PM org.apache.catalina.startup.ContextConfig parseWebXml SEVERE: Parse error in application web.xml file at jndi:/localhost/aldonsecurityservice/WEB-INF/web.xml Throwable occurred: java.lang.ClassCastException: org.apache.catalina.deploy.SecurityConstraint incompatible with org.apache.catalina.deploy.SecurityConstraint at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2687) at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2713) at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1285) at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source) 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 java.lang.reflect.Method.invoke(Method.java:611) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:303) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:431) Jun 11, 2013 2:17:07 PM org.apache.catalina.startup.ContextConfig parseWebXml SEVERE: Occurred at line 147 column 20 class load: java/util/LinkedHashMap$2 class load: java/util/LinkedHashMap$ValueIterator class load: org.apache.catalina.core.StandardWrapperFacade from: file:/ALDON/ALDONLS/tomcat_alcsq/lib/catalina.jar class load: org.apache.catalina.util.InstanceSupport from: file:/ALDON/ALDONLS/tomcat_alcsq/lib/catalina.jar class load: org.apache.catalina.InstanceListener from: file:/ALDON/ALDONLS/tomcat_alcsq/lib/catalina.jar class load: org.apache.catalina.core.StandardWrapperValve from: file:/ALDON/ALDONLS/tomcat_alcsq/lib/catalina.jar class load: javax.servlet.descriptor.TaglibDescriptor from: file:/ALDON/ALDONLS/tomcat_alcsq/lib/servlet-api.jar Is it possible my XML parsers need updating. I'm still using the same ones in my WEB-INF/lib of the webapp: xalan.jar xerces.jar xerces-2.6.2.jar xml-apis.jar xmlrpc-1.2-b1.jar Thanks, JMuse