I have a "index.jsp" and invoke an action using "s:action" tag, then render
data from this action. In the browser I navigate to this jsp direcly
("http://localhost/index.jsp"; instead of browsing to ".../index.action").
Snippet from my JSP:
<s:action name="myAction" var="myActionResult">
...
<s:iterator value="#myActionResult.items">
</s:iterator><table><tbody>
<tr>
<td>
<s:property value="a">
</s:property></td>
<td>
<s:property value="b">
</s:property></td>
<td>
<s:property value="c">
</s:property></td>
</tr>
</tbody>
</table>
This works with Struts 2. But when migrating this to Struts 7M7, this error is
reported:
15:02:27,233 ERROR [io.undertow.request] (default task-1) UT005023: Exception
handling request to /Struts7Sample/: org.apache.jasper.JasperException:
java.lang.NullPointerException: Cannot invoke
"com.opensymphony.xwork2.ActionInvocation.getProxy()" because "invocation" is
null
at
io.undertow.jsp@2.2.7.Final//org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:461)
at
io.undertow.jsp@2.2.7.Final//org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
at
io.undertow.jsp@2.2.7.Final//org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
at
jakarta.servlet.api@6.0.0//jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
at
deployment.Struts7Sample.war//org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.handleRequest(StrutsPrepareAndExecuteFilter.java:160)
at
deployment.Struts7Sample.war//org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.tryHandleRequest(StrutsPrepareAndExecuteFilter.java:146)
at
deployment.Struts7Sample.war//org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:134)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at
io.undertow.jsp@2.2.7.Final//io.undertow.jsp.JspFileHandler.handleRequest(JspFileHandler.java:32)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at
org.wildfly.security.elytron-web.undertow-server@4.1.0.Final//org.wildfly.elytron.web.undertow.server.ElytronRunAsHandler.lambda$handleRequest$1(ElytronRunAsHandler.java:68)
at
org.wildfly.security.elytron-base@2.5.0.Final//org.wildfly.security.auth.server.FlexibleIdentityAssociation.runAsFunctionEx(FlexibleIdentityAssociation.java:103)
at
org.wildfly.security.elytron-base@2.5.0.Final//org.wildfly.security.auth.server.Scoped.runAsFunctionEx(Scoped.java:161)
at
org.wildfly.security.elytron-base@2.5.0.Final//org.wildfly.security.auth.server.Scoped.runAs(Scoped.java:73)
at
org.wildfly.security.elytron-web.undertow-server@4.1.0.Final//org.wildfly.elytron.web.undertow.server.ElytronRunAsHandler.handleRequest(ElytronRunAsHandler.java:67)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
at
io.undertow.core@2.3.15.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
io.undertow.core@2.3.15.Final//io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at
io.undertow.core@2.3.15.Final//io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
at
org.wildfly.security.elytron-web.undertow-server-servlet@4.1.0.Final//org.wildfly.elytron.web.undertow.server.servlet.CleanUpHandler.handleRequest(CleanUpHandler.java:38)
at
io.undertow.core@2.3.15.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
org.wildfly.extension.undertow@33.0.0.Final//org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:44)
at
io.undertow.core@2.3.15.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
org.wildfly.extension.undertow@33.0.0.Final//org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:51)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52)
at
io.undertow.core@2.3.15.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:276)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:132)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
at
org.wildfly.extension.undertow@33.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1421)
at
org.wildfly.extension.undertow@33.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1421)
at
org.wildfly.extension.undertow@33.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1421)
at
org.wildfly.extension.undertow@33.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1421)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:256)
at
io.undertow.servlet@2.3.15.Final//io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:101)
at
io.undertow.core@2.3.15.Final//io.undertow.server.Connectors.executeRootHandler(Connectors.java:393)
at
io.undertow.core@2.3.15.Final//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:859)
at
org.jboss.threads@2.4.0.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at
org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990)
at
org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
at
org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
at
org.jboss.xnio@3.8.16.Final//org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1282)
at java.base/java.lang.Thread.run(Thread.java:842)
Caused by: java.lang.NullPointerException: Cannot invoke
"com.opensymphony.xwork2.ActionInvocation.getProxy()" because "invocation" is
null
at
deployment.Struts7Sample.war//org.apache.struts2.components.Component.getNamespace(Component.java:448)
at
deployment.Struts7Sample.war//org.apache.struts2.components.ActionComponent.executeAction(ActionComponent.java:252)
at
deployment.Struts7Sample.war//org.apache.struts2.components.ActionComponent.end(ActionComponent.java:166)
at
deployment.Struts7Sample.war//org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:39)
at
org.apache.jsp.index_jsp._jspx_meth_s_005faction_005f0(index_jsp.java:171)
at org.apache.jsp.index_jsp._jspService(index_jsp.java:116)
at
io.undertow.jsp@2.2.7.Final//org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at
jakarta.servlet.api@6.0.0//jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
at
io.undertow.jsp@2.2.7.Final//org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:422)
... 53 more
It works if I navigate to "index.action".
Is this intended behavior or a regression? As you can see, I use a WildFly
server (WildFly 26 for Struts 2, WildFly 33 for Struts 7)
I can provide full samples for Struts2 and Struts7 if necessary.
Best regards
Wolfgang</s:action>
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