对于Weblogic 12.2.1.2/12.2.1.3版本，我们遇到了一个奇怪的问题。部署后，我们的应用程序无法启动。以下是我们在日志中看到的异常。
java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_171]
at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[na:1.8.0_171]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_171]
at weblogic.utils.classloaders.GenericClassLoader.defineClassInternal(GenericClassLoader.java:1113) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:1046) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:1038) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:990) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:104) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.GenericClassLoader.doFindClass(GenericClassLoader.java:611) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:543) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:496) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:72) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:53) ~[com.bea.core.utils.classloaders.jar:12.2.1.3]
at org.springframework.security.saml.SAMLBootstrap.postProcessBeanFactory(SAMLBootstrap.java:42) ~[spring-security-saml2-core-1.0.4.RELEASE.jar:1.0.4.RELEASE]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:265) ~[spring-context-4.1.3.RELEASE.jar:4.1.3.RELEASE]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:177) ~[spring-context-4.1.3.RELEASE.jar:4.1.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:606) ~[spring-context-4.1.3.RELEASE.jar:4.1.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:462) ~[spring-context-4.1.3.RELEASE.jar:4.1.3.RELEASE]
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) ~[spring-web-4.1.3.RELEASE.jar:4.1.3.RELEASE]
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) ~[spring-web-4.1.3.RELEASE.jar:4.1.3.RELEASE]
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) [spring-web-4.1.3.RELEASE.jar:4.1.3.RELEASE]
at com.orbit.reporting.config.OrbitApplicationListener.contextInitialized(OrbitApplicationListener.java:44) [_wl_cls_gen.jar:na]
at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:705) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326) [com.oracle.weblogic.security.subject.jar:12.2.1.3]
at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:197) [com.oracle.weblogic.security.subject.jar:12.2.1.3]
at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.servlet.internal.EventsManager.executeContextListener(EventsManager.java:251) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:204) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:189) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1921) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3101) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1843) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:884) [com.oracle.weblogic.servlet.jar:12.2.1.3]
at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:360) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:356) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:138) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:233) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:228) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:78) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:52) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:752) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:262) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.SingleModuleDeployment.activate(SingleModuleDeployment.java:52) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:165) [com.oracle.weblogic.application.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:90) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.activate(AbstractOperation.java:631) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.activateDeployment(ActivateOperation.java:171) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doCommit(ActivateOperation.java:121) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.operations.StartOperation.doCommit(StartOperation.java:151) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.commit(AbstractOperation.java:348) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentCommit(DeploymentManager.java:907) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.DeploymentManager.activateDeploymentList(DeploymentManager.java:1468) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:459) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.commit(DeploymentServiceDispatcher.java:181) [com.oracle.weblogic.deploy.jar:12.2.1.3]
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentReceiverCallbackDeliverer.java:217) [com.oracle.weblogic.deploy.service.jar:12.2.1.3]
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:14) [com.oracle.weblogic.deploy.service.jar:12.2.1.3]
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:69) [com.oracle.weblogic.deploy.service.jar:12.2.1.3]
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:670) [com.bea.core.weblogic.workmanager.jar:12.2.1.3]
at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:352) [com.bea.core.utils.full.jar:12.2.1.3]
at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:337) [com.bea.core.utils.full.jar:12.2.1.3]
at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:57) [com.oracle.weblogic.work.jar:12.2.1.3]
at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41) [com.bea.core.weblogic.workmanager.jar:12.2.1.3]
at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:644) [com.bea.core.weblogic.workmanager.jar:12.2.1.3]
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:415) [com.bea.core.weblogic.workmanager.jar:12.2.1.3]
at weblogic.work.ExecuteThread.run(ExecuteThread.java:355) [com.bea.core.weblogic.workmanager.jar:12.2.1.3]
在进一步调试后，我发现在Weblogic发生异常时，正在尝试加载“ org.opensaml.xml.parse.StaticBasicParserPool”。这是从应用程序jars（从WEB-INF / lib / xmltooling-1.4.6.jar）而不是从weblogic jars加载的。知道StaticBasicParserPool实现了“ org.opensaml.xml.parse.ParserPool”接口后，我查询了ParserPool的类定义（使用“ org.opensaml.xml.parse.ParserPool.class.toGenericString（）;”表达式），发现其定义已更改上课。因此有人将其定义从接口更改为类，并且想知道是谁吗？任何帮助将不胜感激。