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From albert kao <albertk...@gmail.com>
Subject Re: NullPointerException - com.opensymphony.xwork2.util.FileManager$FileRevision.needsReloading(FileManager.java:209) of "Apache Struts 2 Web Application Development" book
Date Sun, 12 Nov 2017 13:26:17 GMT
struts2 version: 2.1.6

On Sat, Nov 11, 2017 at 9:47 PM, Dave Newton <davelnewton@gmail.com> wrote:

> What version of Struts 2 are you attempting to use?
>
> On Sat, Nov 11, 2017 at 5:58 PM albert kao <albertkao3@gmail.com> wrote:
>
> > I downloaded the source code of the book "Apache Struts 2 Web Application
> > Development" by Dave Newton from the
> > https://www.packtpub.com/books/content/support.
> >
> > Chapter 2 had compile error with Apache Maven 3.5.0.
> > $ mvn -version
> > Apache Maven 3.5.0 (ff8f5e7444045639af65f6095c62210b5713f426;
> > 2017-04-03T15:39:06-04:00)
> > Maven home: /home/alkao/maven/apache-maven-3.5.0
> > Java version: 1.8.0_144, vendor: Oracle Corporation
> > Java home: /home/alkao/jdk/jdk1.8.0_144/jre
> > Default locale: en_CA, platform encoding: UTF-8
> > OS name: "linux", version: "4.4.0-21-generic", arch: "i386", family:
> "unix"
> >
> > To fix it, I removed just the <scope> tag in pom.xml.
> > Then run mvn:
> > $ cd
> > /home/alkao/Struts2/Apache_Struts_2_Web_Application_
> Development/ch02/sanity
> > $ mvn clean package
> >
> > Running wildfly-10.1.0.Final:
> > $ JBOSS_HOME/bin/standalone.sh
> > $ jboss-cli.sh --connect --command="deploy
> >
> > /home/alkao/Struts2/Apache_Struts_2_Web_Application_
> Development/ch02/sanity/target/ch02-sanity-1.0.war
> > --force"
> >
> > Running these 3 http links resulted in the same error in the web browser
> > below.
> > Please help. Thanks.
> > http://localhost:8080/ch02-sanity-1.0/index.html
> > http://localhost:8080/ch02-sanity-1.0/sanity.jsp
> > http://localhost:8080/ch02-sanity-1.0/sanity.action
> >
> >
> >
> >
> > Error processing request
> > Context Path:
> > /ch02-convention-1.0
> >
> > Servlet Path:
> > /index.html
> >
> > Path Info:
> > null
> >
> > Query String:
> > null
> >
> > Stack Trace
> > java.lang.NullPointerException
> >
> > com.opensymphony.xwork2.util.FileManager$FileRevision.
> needsReloading(FileManager.java:209)
> >
> > com.opensymphony.xwork2.util.FileManager.fileNeedsReloading(
> FileManager.java:60)
> >
> > com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.
> needsReload(XmlConfigurationProvider.java:325)
> >
> > org.apache.struts2.config.StrutsXmlConfigurationProvider.needsReload(
> StrutsXmlConfigurationProvider.java:168)
> >
> > com.opensymphony.xwork2.config.ConfigurationManager.conditionalReload(
> ConfigurationManager.java:220)
> >
> > com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(
> ConfigurationManager.java:61)
> > org.apache.struts2.dispatcher.Dispatcher.getContainer(
> Dispatcher.java:774)
> >
> > org.apache.struts2.dispatcher.ng.InitOperations.initStaticContentLoader(
> InitOperations.java:77)
> >
> > org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.
> init(StrutsPrepareAndExecuteFilter.java:49)
> >
> > io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(
> LifecyleInterceptorInvocation.java:111)
> >
> > org.wildfly.extension.undertow.security.RunAsLifecycleInterceptor.init(
> RunAsLifecycleInterceptor.java:84)
> >
> > io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(
> LifecyleInterceptorInvocation.java:97)
> > io.undertow.servlet.core.ManagedFilter.createFilter(
> ManagedFilter.java:80)
> > io.undertow.servlet.core.ManagedFilter.getFilter(ManagedFilter.java:66)
> > io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
> >
> > io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.
> doFilter(FilterHandler.java:131)
> >
> > io.undertow.servlet.handlers.FilterHandler.handleRequest(
> FilterHandler.java:84)
> >
> > io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.
> handleRequest(ServletSecurityRoleHandler.java:62)
> >
> > io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(
> ServletDispatchingHandler.java:36)
> >
> > org.wildfly.extension.undertow.security.SecurityContextAssociationHand
> ler.handleRequest(SecurityContextAssociationHandler.java:78)
> >
> > io.undertow.server.handlers.PredicateHandler.handleRequest(
> PredicateHandler.java:43)
> >
> > io.undertow.servlet.handlers.security.SSLInformationAssociationHandl
> er.handleRequest(SSLInformationAssociationHandler.java:131)
> >
> > io.undertow.servlet.handlers.security.ServletAuthenticationCallHandl
> er.handleRequest(ServletAuthenticationCallHandler.java:57)
> >
> > io.undertow.server.handlers.PredicateHandler.handleRequest(
> PredicateHandler.java:43)
> >
> > io.undertow.security.handlers.AbstractConfidentialityHandler
> .handleRequest(AbstractConfidentialityHandler.java:46)
> >
> > io.undertow.servlet.handlers.security.ServletConfidentialityConstrai
> ntHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
> >
> > io.undertow.security.handlers.AuthenticationMechanismsHandle
> r.handleRequest(AuthenticationMechanismsHandler.java:60)
> >
> > io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHand
> ler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
> >
> > io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(
> NotificationReceiverHandler.java:50)
> >
> > io.undertow.security.handlers.AbstractSecurityContextAssocia
> tionHandler.handleRequest(AbstractSecurityContextAssocia
> tionHandler.java:43)
> >
> > io.undertow.server.handlers.PredicateHandler.handleRequest(
> PredicateHandler.java:43)
> >
> > org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.
> handleRequest(JACCContextIdHandler.java:61)
> >
> > io.undertow.server.handlers.PredicateHandler.handleRequest(
> PredicateHandler.java:43)
> >
> > io.undertow.server.handlers.PredicateHandler.handleRequest(
> PredicateHandler.java:43)
> >
> > io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(
> ServletInitialHandler.java:292)
> >
> > io.undertow.servlet.handlers.ServletInitialHandler.access$
> 100(ServletInitialHandler.java:81)
> >
> > io.undertow.servlet.handlers.ServletInitialHandler$2.call(
> ServletInitialHandler.java:138)
> >
> > io.undertow.servlet.handlers.ServletInitialHandler$2.call(
> ServletInitialHandler.java:135)
> >
> > io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(
> ServletRequestContextThreadSetupAction.java:48)
> >
> > io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(
> ContextClassLoaderSetupAction.java:43)
> >
> > io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(
> LegacyThreadSetupActionWrapper.java:44)
> >
> > io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(
> LegacyThreadSetupActionWrapper.java:44)
> >
> > io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(
> LegacyThreadSetupActionWrapper.java:44)
> >
> > io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(
> LegacyThreadSetupActionWrapper.java:44)
> >
> > io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(
> LegacyThreadSetupActionWrapper.java:44)
> >
> > io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(
> ServletInitialHandler.java:272)
> >
> > io.undertow.servlet.handlers.ServletInitialHandler.access$
> 000(ServletInitialHandler.java:81)
> >
> > io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(
> ServletInitialHandler.java:104)
> > io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
> > io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:805)
> >
> > java.util.concurrent.ThreadPoolExecutor.runWorker(
> ThreadPoolExecutor.java:1149)
> >
> > java.util.concurrent.ThreadPoolExecutor$Worker.run(
> ThreadPoolExecutor.java:624)
> > java.lang.Thread.run(Thread.java:748)
> >
> --
> e: davelnewton@gmail.com
> m: 908-380-8699
> s: davelnewton_skype
> t: @dave_newton <https://twitter.com/dave_newton>
> b: Bucky Bits <http://buckybits.blogspot.com/>
> g: davelnewton <https://github.com/davelnewton>
> so: Dave Newton <http://stackoverflow.com/users/438992/dave-newton>
>

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