java Servlet [Faces Servlet] 的 Servlet.service() 在上下文中与路径抛出异常 [null] 并具有根本原因

Servlet.service() for servlet [Faces Servlet] in context with path threw exception [null] with root cause

提问by user2552151

When I use chrome, this error comes out, but with firefox, there is no such error. I even don't know how to debug. In the error info, no clue about which object is null. Could you please give me a hand? Here is the detailed information:

我用chrome的时候就出现这个错误，但是用firefox就没有这个错误了。我什至不知道如何调试。在错误信息中，不知道哪个对象为空。你能帮我一把吗？以下是详细信息：

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?? 05, 2013 10:42:16 ?? org.icefaces.impl.event.BridgeSetup getBodyResources WARNING: Unable to find WindowScope for view /cECI/domainReport.xhtml ?? 05, 2013 10:42:17 ?? com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException SEVERE: Error Rendering View[/cECI/domainReport.xhtml] java.lang.NullPointerException at org.icefaces.impl.event.WindowAndViewIDSetup$1.encode(WindowAndViewIDSetup.java:65) at org.icefaces.impl.event.UIOutputWriter.encodeBegin(UIOutputWriter.java:27) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1777) at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) at org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1779) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:419) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:147) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:101) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:182) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722)

?? 05, 2013 10:42:17 ?? org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [Faces Servlet] in context with path [/CIPortal] threw exception [null] with root cause java.lang.NullPointerException at org.icefaces.impl.event.WindowAndViewIDSetup$1.encode(WindowAndViewIDSetup.java:65) at org.icefaces.impl.event.UIOutputWriter.encodeBegin(UIOutputWriter.java:27) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1777) at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) at org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1779) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:419) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:147) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:101) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:182) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722)

?? 05, 2013 10:42:16 ?? org.icefaces.impl.event.BridgeSetup getBodyResources 警告：无法找到用于查看 /cECI/domainReport.xhtml 的 WindowScope ?? 05, 2013 10:42:17 ?? com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException 严重：错误渲染视图 [/cECI/domainReport.xhtml] java.lang.NullPointerException at org.icefaces.impl.event.WindowAndViewIDSetup$1.encode(WindowAndViewIDSetup.java:65)在 org.icefaces.impl.event.UIOutputWriter.encodeBegin(UIOutputWriter.java:27) 在 javax.faces.component.UIComponent.encodeAll(UIComponent.java:1777) 在 javax.faces.render.Renderer.encodeChildren(Renderer.java) :168) 在 org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) 在 javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:

?? 05, 2013 10:42:17 ?? org.apache.catalina.core.StandardWrapperValve 调用严重：servlet [Faces Servlet] 的 Servlet.service() 在路径 [/CIPortal] 的上下文中抛出异常 [null]，其根本原因是 org.icefaces.impl 处的 java.lang.NullPointerException .event.WindowAndViewIDSetup$1.encode(WindowAndViewIDSetup.java:65) 在 org.icefaces.impl.event.UIOutputWriter.encodeBegin(UIOutputWriter.java:27) 在 javax.faces.component.UIComponent.encodeAll(UIComponent.java:1777)在 javax.faces.render.Renderer.encodeChildren(Renderer.java:168) 在 org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) 在 javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java) :845) 在 javax.faces.component.UIComponent.encodeAll(UIComponent.java:1779) 在 javax.faces.component.UIComponent。

I found when I remove the command link from domainReport.xhtml, the error disappear. I change the command link to most simple, it does not help:

我发现当我从 domainReport.xhtml 中删除命令链接时，错误消失了。我将命令链接更改为最简单的，它没有帮助：

I change command link to linkbutton. It does not help. I don't know why

我将命令链接更改为链接按钮。它没有帮助。我不知道为什么

回答by Cristian Meneses

The error is well detailed, above the exception you mention

错误很详细，在您提到的异常之上

com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException SEVERE: Error Rendering View[/cECI/domainReport.xhtml] java.lang.NullPointerException

You should give a look into that xhtml so it can be rendered correctly

你应该看看那个 xhtml 以便它可以正确呈现

Also, you can create a custo lo4j.properties at /src folder, to obtain extra information from ICEFaces core (in the example is set to WARN, try with INFO, or DEBUG, until you find more information on your problem)

此外，您可以在 /src 文件夹中创建一个 custo lo4j.properties，以从 ICEFaces 核心获取额外信息（在示例中设置为 WARN，尝试使用 INFO 或 DEBUG，直到找到有关您的问题的更多信息）

log4j.rootLogger=INFO

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%d{dd MMM yyyy HH:mm:ss}] %-5p [%F:%L -- %M] - %m%n

log4j.logger.com.icesoft.faces.application.D2DViewHandler=WARN, stdout
log4j.logger.com.sun.faces.config.ConfigureListener=WARN, stdout

That will enable you to see all WARN's coming out of jsf core and icefaces into Eclipse's console.

这将使您能够在 Eclipse 的控制台中看到来自 jsf 核心和 icefaces 的所有 WARN。