[jira] [Commented] (WW-4825) NPE while using getText method from ActionSupport

["Aleksandr Mashchenko (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WW-4825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16102024#comment-16102024 ] 

Aleksandr Mashchenko commented on WW-4825:
------------------------------------------

Please ask these kind of questions in the user mail list - https://struts.apache.org/mail.html or in stackoverflow.

About your issue: Don't use {{getText}} in the action constructor.

> NPE while using getText method from ActionSupport
> -------------------------------------------------
>
>                 Key: WW-4825
>                 URL: https://issues.apache.org/jira/browse/WW-4825
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.5.12
>            Reporter: Prasann Grampurohit
>
> Hi,
> I am migrating a project from Struts 2.3.3 to Struts 2.5.12 and I see NullPointerException when using the getText method from ActionSupport class.
> My action class extends ActionSupport class. I have package.properties file also packaged in the war file.
> And in my action class I just use getText method to retrieve a property from package.properties file.
> I see the below exception. Could you please help? Thank you.
> {code:java}
> ERROR DefaultDispatcherErrorHandler Exception occurred during processing request: Unable to instantiate Action, entryAction,  defined for 'entry' in namespace '/'Error creating bean with name 'entryAction' defined in "/D:/Software/JBossEAP/jboss-eap-7.0/bin/content/Member.war/WEB-INF/classes/my/company/member/web/action/entry/spring-context.xml": Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [my.company.member.web.action.entry.EntryAction]: Constructor threw exception; nested exception is java.lang.NullPointerException
>  Unable to instantiate Action, entryAction,  defined for 'entry' in namespace '/'Error creating bean with name 'entryAction' defined in "/D:/Software/JBossEAP/jboss-eap-7.0/bin/content/Member.war/WEB-INF/classes/my/company/member/web/action/entry/spring-context.xml": Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [my.company.member.web.action.entry.EntryAction]: Constructor threw exception; nested exception is java.lang.NullPointerException - action - vfs:/D:/Software/JBossEAP/jboss-eap-7.0/bin/content/Member.war/WEB-INF/classes/struts-default.xml:133:44
> 	at com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:318)
> 	at com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:399)
> 	at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:204)
> 	at org.apache.struts2.factory.StrutsActionProxy.prepare(StrutsActionProxy.java:62)
> 	at org.apache.struts2.factory.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37)
> 	at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
> 	at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:567)
> 	at org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:81)
> 	at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:143)
> 	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
> 	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
> 	at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
> 	at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
> 	at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
> 	at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
> 	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> 	at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
> 	at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
> 	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> 	at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
> 	at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
> 	at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
> 	at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
> 	at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
> 	at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
> 	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> 	at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
> 	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> 	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> 	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:285)
> 	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:264)
> 	at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
> 	at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:175)
> 	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
> 	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:792)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entryAction' defined in "/D:/Software/JBossEAP/jboss-eap-7.0/bin/content/Member.war/WEB-INF/classes/my/company/member/web/action/entry/spring-context.xml": Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [my.company.member.web.action.entry.EntryAction]: Constructor threw exception; nested exception is java.lang.NullPointerException
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:965)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
> 	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1075)
> 	at com.opensymphony.xwork2.spring.SpringObjectFactory.buildBean(SpringObjectFactory.java:159)
> 	at com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:172)
> 	at com.opensymphony.xwork2.factory.DefaultActionFactory.buildAction(DefaultActionFactory.java:22)
> 	at com.opensymphony.xwork2.ObjectFactory.buildAction(ObjectFactory.java:137)
> 	at com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:299)
> 	... 37 more
> Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [my.company.member.web.action.entry.EntryAction]: Constructor threw exception; nested exception is java.lang.NullPointerException
> 	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:141)
> 	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:74)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:958)
> 	... 48 more
> Caused by: java.lang.NullPointerException
> 	at com.opensymphony.xwork2.ActionSupport.getTextProvider(ActionSupport.java:278)
> 	at com.opensymphony.xwork2.ActionSupport.getText(ActionSupport.java:83)
> 	at my.company.member.web.action.MyAction.<init>(MyAction.java:95)
> 	at my.company.member.web.action.entry.EntryAction.<init>(EntryAction.java:22)
> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> 	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> 	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> 	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:126)
> 	... 50 more
> {code}



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