3 Replies Latest reply on Jul 21, 2006 9:16 AM by mwelch16

    How do I change from session to request?

    mwelch16
    mwelch16 Jul 20, 2006 2:46 PM

      Hello All,

      I am running the hello world faces portlet example using the MyFacesGenericPortlet class. I changed the scope for my bean to request and updated the concatenateNames() method to get the first and last name out of the context, but I am getting a class cast exception. This worked fine when it was in the session scope. I am using jboss-portal-2.2.1-SP2-bundled version of the portal. Please help.

      Thanks,
      Mark


      faces-config.xml setting:

      <managed-bean-scope>request</managed-bean-scope>


      jsp: 
      <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<f:view>
 <div align="center">
 <h:form id="helloForm">
 <h:panelGrid columns="2">
 <h:outputText styleClass="portlet-font" value="First Name:"/>
 <h:inputText value="#{user.firstname}" align="center" required="true" id="firstName"/>
 <h:outputText styleClass="portlet-font" value="Last Name:"/>
 <h:inputText value="#{user.lastname}" align="center" required="true" id="lastName"/>
 </h:panelGrid>
 <br/>
 <h:commandButton action="#{user.concatenateNames}" value="Next"/>
 </h:form>
 </div>
</f:view>


      ConcatenateNames method: 
      public String concatenateNames() {
 FacesContext context = FacesContext.getCurrentInstance();
 HttpServletRequest request = (HttpServletRequest) context.getExternalContext().getRequest();
 String firstNameConcat = request.getParameter("helloForm:firstName");
 String lastNameConcat = request.getParameter("helloForm:lastName");

 setFullname(firstNameConcat + " " + lastNameConcat);
 return "done";
 }


      Exeption: 
      
avax.faces.FacesException: Error calling action method of component with id helloForm:jbp4641925_id3
 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
 at javax.faces.component.UICommand.broadcast(UICommand.java:106)
 at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90)
 at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164)
 at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:316)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
 at org.apache.myfaces.portlet.MyFacesGenericPortlet.processAction(MyFacesGenericPortlet.java:221)
 at org.jboss.portal.portlet.PortletContainer.invokeAction(PortletContainer.java:492)
 at org.jboss.portal.portlet.PortletContainer.dispatch(PortletContainer.java:428)
 at org.jboss.portal.server.app.ComponentInvocation.dispatch(ComponentInvocation.java:79)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:140)
 at org.jboss.portal.core.aspects.component.TransactionInterceptor.invoke(TransactionInterceptor.java:72)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.core.aspects.component.HeaderInterceptor.invoke(HeaderInterceptor.java:50)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.aspects.component.NavigationInterceptor.invoke(NavigationInterceptor.java:76)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.aspects.component.CacheInterceptor.invoke(CacheInterceptor.java:167)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.aspects.component.ModesInterceptor.invoke(ModesInterceptor.java:88)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.aspects.component.WindowStatesInterceptor.invoke(WindowStatesInterceptor.java:87)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.bridge.BridgeInterceptor.invoke(BridgeInterceptor.java:49)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.portlet.aspects.component.SessionPostDispatchInterceptor.invoke(SessionPostDispatchInterceptor.java:65)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.aspects.component.ContextDispatcherInterceptor$InvokeNextCommand.execute(ContextDispatcherInterceptor.java:129)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.portal.server.servlet.CommandServlet.doGet(CommandServlet.java:101)
 at org.jboss.portal.server.servlet.CommandServlet.doPost(CommandServlet.java:149)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
 at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:539)
 at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
 at org.jboss.portal.server.app.impl.AbstractRequestContext.include(AbstractRequestContext.java:247)
 at org.jboss.portal.server.aspects.component.ContextDispatcherInterceptor$1.include(ContextDispatcherInterceptor.java:73)
 at org.jboss.portal.server.servlet.CommandServlet.include(CommandServlet.java:81)
 at org.jboss.portal.server.aspects.component.ContextDispatcherInterceptor.invoke(ContextDispatcherInterceptor.java:79)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.portlet.aspects.component.SessionPreDispatchInterceptor.invoke(SessionPreDispatchInterceptor.java:94)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.aspects.component.ContextTrackerInterceptor.invoke(ContextTrackerInterceptor.java:49)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.portlet.aspects.component.SecureTransportInterceptor.invoke(SecureTransportInterceptor.java:69)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.portlet.aspects.component.ValveInterceptor.invoke(ValveInterceptor.java:64)
 at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.invocation.Invocation.invoke(Invocation.java:175)
 at org.jboss.portal.core.command.InvokeWindowActionCommand.execute(InvokeWindowActionCommand.java:134)
 at org.jboss.portal.core.command.ControllerCommand.dispatch(ControllerCommand.java:78)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:140)
 at org.jboss.portal.core.aspects.controller.EventBroadcasterInterceptor.invoke(EventBroadcasterInterceptor.java:85)
 at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.core.aspects.controller.PolicyEnforcementInterceptor.invoke(PolicyEnforcementInterceptor.java:168)
 at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.core.aspects.controller.PortalNodeInterceptor.invoke(PortalNodeInterceptor.java:61)
 at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.core.aspects.controller.NavigationInterceptor.invoke(NavigationInterceptor.java:58)
 at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.invocation.Invocation.invoke(Invocation.java:175)
 at org.jboss.portal.core.command.CommandContext.execute(CommandContext.java:107)
 at org.jboss.portal.core.command.ExecutionContext.execute(ExecutionContext.java:93)
 at org.jboss.portal.core.command.ExecutionContext.execute(ExecutionContext.java:77)
 at org.jboss.portal.core.CoreController.handle(CoreController.java:190)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.JMXInvocationHandler.invoke(JMXInvocationHandler.java:287)
 at $Proxy136.handle(Unknown Source)
 at org.jboss.portal.server.ServerInvocation.dispatch(ServerInvocation.java:76)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:140)
 at org.jboss.portal.core.aspects.server.SubjectAssociationInterceptor.invoke(SubjectAssociationInterceptor.java:47)
 at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.core.aspects.server.PolicyAssociationInterceptor.invoke(PolicyAssociationInterceptor.java:52)
 at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.aspects.server.ContentTypeInterceptor.invoke(ContentTypeInterceptor.java:68)
 at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.core.aspects.server.LocaleInterceptor.invoke(LocaleInterceptor.java:69)
 at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.core.aspects.server.UserInterceptor.invoke(UserInterceptor.java:184)
 at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.aspects.server.SessionInvalidatorInterceptor.invoke(SessionInvalidatorInterceptor.java:87)
 at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.core.aspects.server.TransactionInterceptor.invoke(TransactionInterceptor.java:75)
 at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38)
 at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
 at org.jboss.portal.server.invocation.Invocation.invoke(Invocation.java:175)
 at org.jboss.portal.server.servlet.PortalServlet.doGet(PortalServlet.java:221)
 at org.jboss.portal.server.servlet.PortalServlet.doPost(PortalServlet.java:149)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.el.EvaluationException: Exception while invoking expression #{user.concatenateNames}
 at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:153)
 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
 ... 148 more
Caused by: java.lang.ClassCastException: org.jboss.portlet.JBossActionRequest
 at com.nielsenmedia.foundations.faces.beans.User.concatenateNames(User.java:38)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:129)
 ... 149 more


      • 2166 Views
      • Tags:
        • 1. Re: How do I change from session to request?
          mwelch16
          mwelch16 Jul 21, 2006 8:17 AM (in response to mwelch16)

          Nevermind I figured it out. FYI for any other newbies out there. In order to get a handle on the request within a portlet you have to cast to PortletRequest. I'm trying to do a proof of concept, and I've never worked with portlets before but have done lots of java server faces applications. It took me a while to find this.

          new java code:

          FacesContext context = FacesContext.getCurrentInstance();
 ExternalContext externalContext = context.getExternalContext();
 if (externalContext.getRequest() instanceof PortletRequest) {
 PortletRequest request = (PortletRequest)externalContext.getRequest();

 System.out.println(request.getParameter("helloForm:firstName"));
 System.out.println(request.getParameter("helloForm:lastName"));
 }else if(externalContext.getRequest() instanceof HttpServletRequest) {
 //do something outside of portal portlet api not in classpath
 }


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          • 2. Re: How do I change from session to request?
            theute
            theute Jul 21, 2006 8:42 AM (in response to mwelch16)

            Since you address this to newbie, i want to mention that you should try to avoid casting that at all costs while writing components, this is mostly a hack.

            We found enough components that do a cast from ExternalContext to HttpServletContext and then make the component unusable inside a portlet environment (for no technical reason). This is often not required, just a wish of the programmer to fall back to an API that he feels more comfortable with.


            In your example, you could simply use:

            FacesContext context = FacesContext.getCurrentInstance();
ExternalContext externalContext = context.getExternalContext();
System.out.println(externalContext.getRequestParameterMap().getAttribute("helloForm:firstName"));
System.out.println(externalContext.getRequestParameterMap().getAttribute("helloForm:lastName"));


            And it will do the same thing but work in both environment.

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            • 3. Re: How do I change from session to request?
              mwelch16
              mwelch16 Jul 21, 2006 9:16 AM (in response to mwelch16)

              Very true and thanks for the tip. Inline would work better. You are definitely right; I was just testing things to make sure I could do all the same things in this environment that have helped me in previous environments. Your code example makes more sense.

              Thanks,
              Mark

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