[jboss-user] [JBoss Seam] - Exception thrown on Session with Page scope

[gus888]

Hi all,

When I tried to change a SFSB scope from Session to Page, I always got the following exception. Can Page scope be assigned to SFSB? From Seam document, it seems OK. Anybody can give me a help? Thank you in advance.
22:28:13,843 ERROR [[/prototype]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
  | java.lang.IllegalArgumentException: Stateful session beans may not be bound to the PAGE context: studyExplorer
  |         at org.jboss.seam.Component.checkScopeForComponentType(Component.java:299)
  |         at org.jboss.seam.Component.<init>(Component.java:217)
  |         at org.jboss.seam.Component.<init>(Component.java:204)
  |         at org.jboss.seam.init.Initialization.addComponent(Initialization.java:742)
  |         at org.jboss.seam.init.Initialization.addComponents(Initialization.java:674)
  |         at org.jboss.seam.init.Initialization.init(Initialization.java:429)
  |         at org.jboss.seam.servlet.SeamListener.contextInitialized(SeamListener.java:33)
  |         at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3763)
  |         at org.apache.catalina.core.StandardContext.start(StandardContext.java:4211)
  |         at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
  |         at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
  |         at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
  |         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.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
  |         at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.apache.catalina.core.StandardContext.init(StandardContext.java:5052)
  |         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.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
  |         at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeployInternal(TomcatDeployer.java:297)
  |         at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeploy(TomcatDeployer.java:103)
  |         at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:371)
  |         at org.jboss.web.WebModule.startModule(WebModule.java:83)
  |         at org.jboss.web.WebModule.startService(WebModule.java:61)
  |         at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
  |         at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
  |         at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
  |         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.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
  |         at $Proxy0.start(Unknown Source)
  |         at org.jboss.system.ServiceController.start(ServiceController.java:417)
  |         at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
  |         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.server.Invocation.invoke(Invocation.java:86)
  |         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.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy49.start(Unknown Source)
  |         at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:466)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:585)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  |         at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
  |         at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
  |         at org.jboss.ws.integration.jboss.DeployerInterceptor.start(DeployerInterceptor.java:92)
  |         at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
  |         at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
  |         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.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy50.start(Unknown Source)
  |         at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
  |         at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015)
  |         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
  |         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
  |         at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
  |         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.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy6.deploy(Unknown Source)
  |         at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
  |         at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:610)
  |         at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
  |         at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
  |         at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)

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