NullPointerException異常使用導航的情況下

Question

時，我有這在我的faces-config.xml中：

<navigation-rule> 
    <from-view-id>*</from-view-id> 
    <navigation-case> 
     <from-outcome>login</from-outcome> 
     <to-view-id>/login.xhtml</to-view-id> 
     <redirect/> 
    </navigation-case> 
    <navigation-case> 
     <from-outcome>index</from-outcome> 
     <to-view-id>/index.xhtml</to-view-id> 
     <redirect/> 
    </navigation-case> 
</navigation-rule> 

當我去這個頁面的一個，我得到這個異常：

Error Rendering View[/index.xhtml] 
java.lang.NullPointerException 
    at com.sun.faces.application.NavigationHandlerImpl.determineViewFromActionOutcome(NavigationHandlerImpl.java:1271) 
    at com.sun.faces.application.NavigationHandlerImpl.findWildCardMatch(NavigationHandlerImpl.java:660) 
    at com.sun.faces.application.NavigationHandlerImpl.getViewId(NavigationHandlerImpl.java:482) 
    at com.sun.faces.application.NavigationHandlerImpl.getNavigationCase(NavigationHandlerImpl.java:148) 
    at com.sun.faces.application.NavigationHandlerImpl.getNavigationCase(NavigationHandlerImpl.java:139) 
    at com.sun.faces.renderkit.html_basic.OutcomeTargetRenderer.getNavigationCase(OutcomeTargetRenderer.java:146) 
    at com.sun.faces.renderkit.html_basic.OutcomeTargetLinkRenderer.encodeBegin(OutcomeTargetLinkRenderer.java:85) 
    at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:864) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1894) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899) 
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:451) 
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) 
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) 
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) 
    at java.lang.Thread.run(Thread.java:724) 

線1270（1200在2.2.1）是

FlowHandler fh = ctx.getApplication().getFlowHandler(); 

它返回null並且使上下一行一個NullPointerException。 Glassfish 4.0.0，JDK 1.7.0_40，JSF 2.2.4（2.2.1之前是編輯，但我不知道Glassfish有2.2.0），Ubuntu 12.10 64bit。怎麼了？

的web.xml

<?xml version="1.0" encoding="UTF-8"?> 
<web-app xmlns="http://java.sun.com/xml/ns/javaee" 
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 
      version="3.0"> 

    <servlet> 
     <servlet-name>Faces Servlet</servlet-name> 
     <servlet-class>javax.faces.webapp.FacesServlet</servlet-class> 
     <load-on-startup>1</load-on-startup> 
    </servlet> 
    <servlet-mapping> 
     <servlet-name>Faces Servlet</servlet-name> 
     <url-pattern>/faces/*</url-pattern> 
    </servlet-mapping> 
    <servlet-mapping> 
     <servlet-name>Faces Servlet</servlet-name> 
     <url-pattern>*.faces</url-pattern> 
    </servlet-mapping> 
</web-app> 

我固定另一個錯誤之後抓住了這個錯誤。

Answer 1

從工件中排除CDI庫。包括是由Idea提出的。