* .xhtml url-pattern powoduje wywołanie java.lang.NullPointerException na com.sun.faces.context.flash.ELFlash.loggingGetPhaseMapForReading

Question

Próbuję zmusić JSF do przetworzenia mojego pliku powitania. Mam ustawiony servlet-mapping w moim web.xml do poniższego:

<servlet-mapping> 
    <servlet-name>Faces Servlet</servlet-name> 
    <url-pattern>*.xhtml</url-pattern> 
</servlet-mapping> 

Jednak, gdy próbuję uruchomić mój projekt po zrobieniu tego, otrzymuję ten wyjątek:

java.lang.NullPointerException 
    at com.sun.faces.context.flash.ELFlash.loggingGetPhaseMapForReading(ELFlash.java:793) 
    at com.sun.faces.context.flash.ELFlash.getPhaseMapForReading(ELFlash.java:826) 
    at com.sun.faces.context.flash.ELFlash.isEmpty(ELFlash.java:484) 
    at com.sun.faces.facelets.util.DevTools.writeVariables(DevTools.java:325) 
    at com.sun.faces.facelets.util.DevTools.writeVariables(DevTools.java:215) 
    at com.sun.faces.facelets.util.DevTools.debugHtml(DevTools.java:130) 
    at com.sun.faces.renderkit.RenderKitUtils.renderHtmlErrorPage(RenderKitUtils.java:1162) 
    at com.sun.faces.context.ExceptionHandlerImpl.throwIt(ExceptionHandlerImpl.java:276) 
    at com.sun.faces.context.ExceptionHandlerImpl.handle(ExceptionHandlerImpl.java:142) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:119) 
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) 
    at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) 
    at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:807) 
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:671) 
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:505) 
    at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:476) 
    at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:355) 
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:305) 
    at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:546) 
    at com.sun.faces.application.view.JspViewHandlingStrategy.executePageToBuildView(JspViewHandlingStrategy.java:364) 
    at com.sun.faces.application.view.JspViewHandlingStrategy.buildView(JspViewHandlingStrategy.java:154) 
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:100) 
    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.StandardWrapper.service(StandardWrapper.java:1550) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) 
    at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195) 
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860) 
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757) 
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056) 
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229) 
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) 
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) 
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) 
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) 
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) 
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) 
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71) 
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) 
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) 
    at java.lang.Thread.run(Thread.java:722) 

Co jest Obcy jest taki, że po zmianie odwzorowania na

<servlet-mapping> 
    <servlet-name>Faces Servlet</servlet-name> 
    <url-pattern>/faces/*</url-pattern> 
</servlet-mapping> 

wszystko działa poprawnie. Czy ktoś ma pojęcie, co tu się dzieje? Używam JSF 2.1 na Glassfish 3.1, a to jest mój kompletny plik web.xml, jeśli to pomaga.

<?xml version="1.0" encoding="UTF-8"?> 

<web-app version="3.0" 
     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"> 
    <context-param> 
     <param-name>com.sun.faces.verifyObjects</param-name> 
     <param-value>false</param-value> 
    </context-param> 
    <context-param> 
     <param-name>com.sun.faces.validateXml</param-name> 
     <param-value>false</param-value> 
    </context-param> 
    <context-param> 
     <param-name>javax.faces.CONFIG_FILES</param-name> 
     <param-value>/WEB-INF/faces-config.xml</param-value> 
    </context-param> 
    <context-param> 
     <param-name>javax.faces.STATE_SAVING_METHOD</param-name> 
     <param-value>client</param-value> 
    </context-param> 
    <context-param> 
     <param-name>javax.faces.PROJECT_STAGE</param-name> 
     <param-value>Development</param-value> 
    </context-param> 
    <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>*.xhtml</url-pattern> 
    </servlet-mapping> 
    <session-config> 
     <session-timeout> 
      30 
     </session-timeout> 
    </session-config> 
    <welcome-file-list> 
     <welcome-file>index.xhtml</welcome-file> 
    </welcome-file-list> 
</web-app> 

Answer 1

Okazuje się, że problem został spowodowany przez mój plik faces-config.xml. Skopiowałem ze starszego projektu, który korzystał z JSF 1.2, podczas gdy ja używałem 2.1. Kiedy to zmieniłem, problem zniknął.

Answer 2

Dla mnie <url-pattern>*.xhtml</url-pattern> działa absolutnie dobrze. Zastanawiam się, gdzie umieściłeś plik index.xhtml?