log4j 中的异常深度

Question

我的 Myfaces 2 应用程序遇到实例化异常。但是通过 log4j 打印的异常会切断堆栈跟踪的其余部分。这是我所看到的：

javax.faces.FacesException：java.lang.InstantiationException 在 org.apache.myfaces.config.ManagedBeanBuilder.buildManagedBean(ManagedBeanBuilder.java:240) 在 org.apache.myfaces.el.unified.resolver.ManagedBeanResolver.createManagedBean(ManagedBeanResolver.java:303) 在 org.apache.myfaces.el.unified.resolver.ManagedBeanResolver.getValue(ManagedBeanResolver.java:266) 在 javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54) 在 org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:142) 在org.apache.myfaces.el.VariableResolverImpl.resolveVariable（VariableResolverImpl.java:65） 在 org.apache.myfaces.el.convert.VariableResolverToELResolver.getValue(VariableResolverToELResolver.java:116) 在 javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54) 在 org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:142) 在 org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:61) 在 org.apache.el.parser.AstValue.getValue(AstValue.java:107) 在 org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) 在 org.apache.myfaces.view.facelets.el.TagValueExpression.getValue(TagValueExpression.java:85) 在 javax.faces.component._DeltaStateHelper.eval(_DeltaStateHelper.java:243) 在 javax.faces.component.UIOutput.getValue(UIOutput.java:71) 在 javax.faces.component.UIInput.getValue(UIInput.java:143) 在 javax.faces.component.UISelectBoolean.getValue(UISelectBoolean.java:148) 在 org.apache.myfaces.shared_impl.renderkit.RendererUtils.getObjectValue(RendererUtils.java:238) 在 org.apache.myfaces.shared_impl.renderkit.RendererUtils.getBooleanValue(RendererUtils.java:193) 在 org.apache.myfaces.shared_impl.renderkit.html.HtmlCheckboxRendererBase.encodeEnd（HtmlCheckboxRendererBase.java:79） 在 javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:519) 在 javax.faces.component.UIComponent.encodeAll(UIComponent.java:626) 在 javax.faces.component.UIComponent.encodeAll(UIComponent.java:622) 在 javax.faces.component.UIComponent.encodeAll(UIComponent.java:622) 在org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView（FaceletViewDeclarationLanguage.java:1320） 在 org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:263) 在 javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:59) 在 org.apache.myfaces.tomahawk.application.ResourceViewHandlerWrapper.renderView（ResourceViewHandlerWrapper.java:93） 在 org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:85) 在 org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:239) 在 javax.faces.webapp.FacesServlet.service(FacesServlet.java:191) 在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 在 org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 在 org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:349) 在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 在 org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:233） 在 org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:191） 在 org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) 在 org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 在 org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 在 org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) 在 org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190) 在 org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291) 在 org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769) 在 org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698) 在 org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891) 在 org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690) 在 java.lang.Thread.run(Thread.java:619) 引起原因：java.lang.InstantiationException 在 sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance（InstantiationExceptionConstructorAccessorImpl.java:30） 在 java.lang.reflect.Constructor.newInstance(Constructor.java:513) 在 java.lang.Class.newInstance0(Class.java:355) 在 java.lang.Class.newInstance(Class.java:308) 在 org.apache.myfaces.config.annotation.TomcatAnnotationLifecycleProvider.newInstance（TomcatAnnotationLifecycleProvider.java:49） 在 org.apache.myfaces.config.ManagedBeanBuilder.buildManagedBean(ManagedBeanBuilder.java:162) ... 48 更多

我找不到在哪里更改配置，所以我可以看到“... 48 more”。有什么想法吗？

Answer 1

你不能。堆栈跟踪的截断是 JVM 的功能，而不是 log4j 的功能。

它实际上只是丢弃已经向您提供的信息。
... 48 more 是“Caused by”消息之前的 48 帧的简写。因此，在您的情况下，省略的 48 帧是：

    org.apache.myfaces.el.unified.resolver.ManagedBeanResolver.createManagedBean(ManagedBeanResolver.java:303) at
    org.apache.myfaces.el.unified.resolver.ManagedBeanResolver.getValue(ManagedBeanResolver.java:266) at
    javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54) at
    org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:142) at
    org.apache.myfaces.el.VariableResolverImpl.resolveVariable(VariableResolverImpl.java:65) at
    org.apache.myfaces.el.convert.VariableResolverToELResolver.getValue(VariableResolverToELResolver.java:116) at
    javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54) at
    org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:142) at
    org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:61) at
    org.apache.el.parser.AstValue.getValue(AstValue.java:107) at
    org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) at
    org.apache.myfaces.view.facelets.el.TagValueExpression.getValue(TagValueExpression.java:85) at
    javax.faces.component._DeltaStateHelper.eval(_DeltaStateHelper.java:243) at
    javax.faces.component.UIOutput.getValue(UIOutput.java:71) at
    javax.faces.component.UIInput.getValue(UIInput.java:143) at
    javax.faces.component.UISelectBoolean.getValue(UISelectBoolean.java:148) at
    org.apache.myfaces.shared_impl.renderkit.RendererUtils.getObjectValue(RendererUtils.java:238) at
    org.apache.myfaces.shared_impl.renderkit.RendererUtils.getBooleanValue(RendererUtils.java:193) at
    org.apache.myfaces.shared_impl.renderkit.html.HtmlCheckboxRendererBase.encodeEnd(HtmlCheckboxRendererBase.java:79) at
    javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:519) at
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:626) at
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:622) at
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:622) at
    org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:1320) at
    org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:263) at
    javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:59) at
    org.apache.myfaces.tomahawk.application.ResourceViewHandlerWrapper.renderView(ResourceViewHandlerWrapper.java:93) at
    org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:85) at
    org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:239) at
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:191) at
    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at
    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at
    org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:349) at
    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at
    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at
    org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at
    org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at
    org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at
    org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at
    org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190) at
    org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291) at
    org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769) at
    org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698) at
    org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891) at
    org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690) at
    java.lang.Thread.run(Thread.java:619)