Thanks for the input! but it wouldn't cause a NullPointerException - "messageHello null!" would be displayed. Not nice though...
-----Original Message----- From: Richard Yee Sent: 25. oktober 2010 04:12 To: MyFaces Discussion Cc: <users@myfaces.apache.org> Subject: Re: NullPointerException in trinidadinternal [TRINIDAD] I think name is null in your sayHello method. Richard Sent from my iPhone On Oct 24, 2010, at 5:06 PM, "Micah Klitgaard" <m...@micah-co.com> wrote: > Hi, > > > > I have been searching the forum but haven't found any hints on what's wrong > and the reason why this exception is thrown. > > The example I provided is cut down to the basics. An action returning null > or "" should be possible right? > > > > I would really appreciate if someone could take a look into this. Thanks! > > > > jdk1.6.0_21 > > myfaces-core-2.0.1-bin\lib\commons-beanutils-1.7.0.jar > > myfaces-core-2.0.1-bin\lib\commons-codec-1.3.jar > > myfaces-core-2.0.1-bin\lib\commons-collections-3.2.jar > > myfaces-core-2.0.1-bin\lib\commons-digester-1.8.jar > > myfaces-core-2.0.1-bin\lib\commons-discovery-0.4.jar > > myfaces-core-2.0.1-bin\lib\commons-logging-1.1.1.jar > > myfaces-core-2.0.1-bin\lib\myfaces-api-2.0.1.jar > > myfaces-core-2.0.1-bin\lib\myfaces-impl-2.0.1.jar > > jakarta-taglibs-standard-1.1.2\lib\jstl.jar > > jakarta-taglibs-standard-1.1.2\lib\standard.jar > > > > On apache-tomcat-6.0.29 > > > > > > SEVERE: An exception occurred > > javax.faces.FacesException: java.lang.NullPointerException > > at > org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.wrap(ExceptionHa > ndlerImpl.java:241) > > at > org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.handle(Exception > HandlerImpl.java:156) > > at > org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:258) > > at > javax.faces.webapp.FacesServlet.service(FacesServlet.java:191) > > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application > FilterChain.java:290) > > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh > ain.java:206) > > at > org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl( > TrinidadFilterImpl.java:247) > > at > org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(Trini > dadFilterImpl.java:157) > > at > org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.ja > va:92) > > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application > FilterChain.java:235) > > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh > ain.java:206) > > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja > va:233) > > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja > va:191) > > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127 > ) > > 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:298) > > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857) > > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http > 11Protocol.java:588) > > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) > > at java.lang.Thread.run(Thread.java:619) > > Caused by: java.lang.NullPointerException > > at > org.apache.myfaces.trinidadinternal.application.StateManagerImpl._removeTran > sientComponents(StateManagerImpl.java:844) > > at > org.apache.myfaces.trinidadinternal.application.StateManagerImpl.saveView(St > ateManagerImpl.java:166) > > at > org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(F > aceletViewDeclarationLanguage.java:1170) > > at > org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.ja > va:264) > > at > javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.jav > a:59) > > at > org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(V > iewHandlerImpl.java:212) > > at > org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseEx > ecutor.java:85) > > at > org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:239) > > ... 18 more > > > > > > I have briefly included my files: > > > > commandButton.xhtml > > > > <ui:composition xmlns="http://www.w3.org/1999/xhtml"; > > xmlns:ui="http://java.sun.com/jsf/facelets"; > > xmlns:tr="http://myfaces.apache.org/trinidad"; > > template="template.xhtml"> > > > > <ui:define name="centerContents"> > > <tr:inputText label="Your name" value="#{commandButtonBean.name}"/> > > <!-- commandButtonBean.sayHello causing exception --> > > <tr:commandButton text="Say Hello" > action="#{commandButtonBean.sayHello}"/> > > > > <tr:commandButton text="Go to page1.xhtml" action="success"/> > > <tr:commandButton text="Go to gpstracer" action="gpstracer"/> > > <tr:outputText value="#{commandButtonBean.message}"/> > </ui:define> > > > > </ui:composition> > > > > > > faces-config.xml > > <faces-config 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-facesconfig_2_0.xsd"; > > version="2.0"> > > > > <application> > > <!-- Use the Trinidad RenderKit --> > > <default-render-kit-id> > > org.apache.myfaces.trinidad.core > > </default-render-kit-id> > > ... > > <navigation-rule> > > <from-view-id>/pages/commandButton.xhtml</from-view-id> > > <navigation-case> > > <from-outcome>success</from-outcome> > > <to-view-id>/page1.xhtml</to-view-id> > > <redirect/> > > </navigation-case> > > <navigation-case> > > <from-outcome>gpstracer</from-outcome> > > <to-view-id>/pages/gpstracer.xhtml</to-view-id> > > <redirect/> > > </navigation-case> > > </navigation-rule> > > ... > > > > > > CommandButtonBean.java > > ... > > public String sayHello() { > > message="Hello "+name+"!"; > > return null; > > } > > ... > > > > > > template.xml > > > > <?xml version="1.0" encoding="UTF-8"?> > > <tr:document xmlns:ui="http://java.sun.com/jsf/facelets"; > > xmlns:h="http://java.sun.com/jsf/html"; > > xmlns:f="http://java.sun.com/jsf/core"; > > xmlns:c="http://java.sun.com/jstl/core"; > > xmlns:tr="http://myfaces.apache.org/trinidad"; > > xmlns:trh="http://myfaces.apache.org/trinidad/html";> > > > > <f:facet name="metaContainer"> > > <meta name="title" content="navigationHandler.currentPageTitle"/> > > <meta name="robots" content="index, follow"/> > > </f:facet> > > > > <tr:form id="mainForm"> > > <div class="centerContents"> > > <ui:insert name="centerContents"/> > > </div> > > </tr:form> > > <ui:debug/> > > > > </tr:document> > > > > -Micah >
