目前我们面临着一个奇怪的问题。我们有一个很大的应用程序,它作为root.war部署在webapp目录中(没有其他应用程序)。Tomcat(8.0.32)在启动时解包战争。它以Windows服务的形式开始。
当我们停止服务并再次启动它时,NoClassDefFoundError就会出现(我们自己的类之一,每次都是一样的)。在一次新的停止/启动后,它确实起作用了。停止/开始->不起作用。停止/开始->做工作等等...
Message: Can't instantiate page using constructor 'public my.package.MyPage(org.apache.wicket.request.mapper.parameter.PageParameters)' and argument 'p=[MyOtherPage], userName=[abc1]'. An exception has been thrown during construction! Root cause: java.lang.NoClassDefFoundError: my.package.MyPanel at my.package.MyPage.(MyPage.java:114) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:171) at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:99) at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:137) at org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:268) at org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:166) at org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78) at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:279) at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175) at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:862) at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261) at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218) at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289) at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259) at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:201) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:282) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:151) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) at my.package.web.filter.MDCPersistenceFilter.doFilter(MDCPersistenceFilter.java:47) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at my.package.web.filter.TenantContextPersistenceFilter.doFilter(TenantContextPersistenceFilter.java:59) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.access.channel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:144) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at ch.qos.logback.access.tomcat.LogbackValve.invoke(LogbackValve.java:256) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2500) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2489) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Complete stack: org.apache.wicket.WicketRuntimeException: Can't instantiate page using constructor 'public my.package.MyPage(org.apache.wicket.request.mapper.parameter.PageParameters)' and argument 'p=[MyOtherPage], userName=[abc1]'. An exception has been thrown during construction! at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:194) at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:99) at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:137) at org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:268) at org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:166) at org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78) at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:279) at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175) at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:862) at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261) at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218) at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289) at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259) java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:171) at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:99) at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:137) at org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:268) at org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:166) at org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78) at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:279) at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175) at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:862) at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261) at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218) at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289) at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259)
问题是我的MyPanel.java中的一个静态{..}块,没有什么奇怪的事情发生,但它导致了这个问题。感谢你的帮助!
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