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POUnknown NullPointerException when trying to run Apache MyFaces 2.0.2 application
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I am trying to run a sample JSF 2.0 application which is built on <code>Apache MyFaces 2.0.2</code> and <code>Apache Trinindad 2.0.1</code>. I am running on <code>weblogic 11g</code>. I am encountering an <code>NullPointerException</code> in trinidad internal classes which i am unable to debug. Here is the exception <pre><code>javax.faces.FacesException: java.lang.NullPointerException at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.wrap(ExceptionHandlerImpl.java:241) at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.handle(ExceptionHandlerImpl.java:156) at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:191) at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at com.others.CacheFilter.doFilter(CacheFilter.java:56) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207) at weblogic.work.ExecuteThread.run(ExecuteThread.java:176) Caused by: java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768) at org.apache.myfaces.trinidadinternal.application.ViewDeclarationLanguageFactoryImpl._getInternalView(ViewDeclarationLanguageFactoryImpl.java:104) at org.apache.myfaces.trinidadinternal.application.ViewDeclarationLanguageFactoryImpl.getViewDeclarationLanguage(ViewDeclarationLanguageFactoryImpl.java:79) at org.apache.myfaces.application.ViewHandlerImpl.getViewDeclarationLanguage(ViewHandlerImpl.java:157) at javax.faces.application.ViewHandlerWrapper.getViewDeclarationLanguage(ViewHandlerWrapper.java:128) at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:150) at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171) ... 20 more </code></pre> This error is encountered after <code>RESTOREVIEW PHASE</code> of the lifecycle. Here is my <code>web.xml</code>. <pre><code><?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>/*appname*/</display-name> <context-param> <param-name>javax.faces.PROJECT_STAGE</param-name> <param-value>Development</param-value> </context-param> <context-param> <description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description> <param-name>javax.faces.STATE_SAVING_METHOD</param-name> <param-value>client</param-value> </context-param> <context-param> <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name> <param-value>true</param-value> </context-param> <context-param> <param-name>org.apache.myfaces.PRETTY_HTML</param-name> <param-value>true</param-value> </context-param> <context-param> <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name> <param-value>false</param-value> </context-param> <context-param> <param-name>org.apache.myfaces.AUTO_SCROLL</param-name> <param-value>true</param-value> </context-param> <context-param> <param-name>facelets.SKIP_COMMENTS</param-name> <param-value>true</param-value> </context-param> <context-param> <param-name>javax.faces.DEFAULT_SUFFIX</param-name> <param-value>.xhtml</param-value> </context-param> <context-param> <param-name>javax.faces.FACELETS_VIEW_MAPPINGS</param-name> <param-value>.xhtml</param-value> </context-param> <context-param> <param-name>org.apache.myfaces.ERROR_HANDLING</param-name> <param-value>false</param-value> </context-param> <context-param> <param-name>javax.faces.PARTIAL_STATE_SAVING_METHOD</param-name> <param-value>false</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> <servlet> <servlet-name>resources</servlet-name> <servlet-class>org.apache.myfaces.trinidad.webapp.ResourceServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>resources</servlet-name> <url-pattern>/adf/*</url-pattern> </servlet-mapping> <filter> <filter-name>trinidad</filter-name> <filter-class>org.apache.myfaces.trinidad.webapp.TrinidadFilter</filter-class> </filter> <filter-mapping> <filter-name>trinidad</filter-name> <servlet-name>faces</servlet-name> </filter-mapping> <error-page> <exception-type>java.lang.Exception</exception-type> <location>/others/Error.xhtml</location> </error-page> <error-page> <exception-type>java.lang.NullPointerException</exception-type> <location>/others/Error.xhtml</location> </error-page> </web-app> </code></pre> And here is my <code>faces-config.xml</code> <pre><code><?xml version="1.0" encoding="UTF-8"?> <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> <locale-config> <default-locale>en</default-locale> <supported-locale>en</supported-locale> </locale-config> <resource-bundle> <base-name>messages</base-name> <var>msgs</var> </resource-bundle> <default-render-kit-id> org.apache.myfaces.trinidad.core </default-render-kit-id> </application> <lifecycle> <phase-listener>com.others.LifeCycleListener</phase-listener> </lifecycle> </faces-config> </code></pre> And Here is the <code>Home.xhtml</code> which i am trying to access <pre><code><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" 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:tr="http://myfaces.apache.org/trinidad" xmlns:trh="http://myfaces.apache.org/trinidad/html"> <h:body> <ui:composition template="../Templates/homelayout.xhtml"> <ui:define name="pagetitle">Home</ui:define> <ui:define name="bodycontent"> <h:outputText value="This is an output text"/> <h:outputText value="This is an output text"/> <h:outputText value="This is an output text"/> <h:outputText value="This is an output text"/> <h:outputText value="This is an output text"/> </ui:define> </ui:composition> </h:body> </code></pre> And Here is my folder structure snapshot <img src="https://i.stack.imgur.com/CXkhl.png" alt="enter image description here"> Can somebody please explain me the reason for the Nullpointer Exception? and also How to solve it? Thanks in Advance. Update: I removed the old <code>MyFaces 2.0.2</code> jars and added <code>MyFaces 2.0.14</code> jars. I also added an error page in the <code>web.xml</code> to get the complete error info. This is the exception message it throws now. <pre><code>java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768) at org.apache.myfaces.trinidadinternal.application.ViewDeclarationLanguageFactoryImpl._getInternalView(ViewDeclarationLanguageFactoryImpl.java:104) at org.apache.myfaces.trinidadinternal.application.ViewDeclarationLanguageFactoryImpl.getViewDeclarationLanguage(ViewDeclarationLanguageFactoryImpl.java:79) at org.apache.myfaces.application.ViewHandlerImpl.getViewDeclarationLanguage(ViewHandlerImpl.java:158) at javax.faces.application.ViewHandlerWrapper.getViewDeclarationLanguage(ViewHandlerWrapper.java:128) at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:151) at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171) at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at com.others.CacheFilter.doFilter(CacheFilter.java:56) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207) at weblogic.work.ExecuteThread.run(ExecuteThread.java:176) </code></pre>
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Unknown NullPointerException when trying to run Apache MyFaces 2.0.2 application
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