IllegalStateException: GetAttribute: Sitzung bereits ungültig gemacht

StackOverflow https://stackoverflow.com/questions/4827035

Frage

Ich habe ein Problem mit meiner ersten JSF/ICEFACES -Anwendung (Version 1.8.2), die auf JBoss 5.1.0 ausgeführt wird.

Ich erhalte nach einer Weile eine Ausnahme und erzähle mir von Sitzungsproblemen. Das ist seltsam, weil ich überhaupt keine Sitzungen in meinem Code verwende. Die folgenden Protokolle zeigen, dass keine meiner Backing -Bohnen aufgrund dieses Fehlers (von JBoss) instanziiert werden kann:

com.sun.faces.mgbean.ManagedBeanCreationException: Cant instantiate class: bean.Abgrenzungsreise.
    at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:191)
    at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:106)
    at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:368)
    at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:222)
    at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:86)
    at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
    at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
    at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:61)
    at org.apache.el.parser.AstValue.getValue(AstValue.java:107)
    at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
    at javax.faces.component.UISelectItems.getValue(UISelectItems.java:141)
    at com.icesoft.faces.renderkit.dom_html_basic.MenuRenderer.getSelectItems(MenuRenderer.java:637)
    at com.icesoft.faces.renderkit.dom_html_basic.MenuRenderer.countSelectOptionsRecursive(MenuRenderer.java:448)
    at com.icesoft.faces.renderkit.dom_html_basic.MenuRenderer.renderSelect(MenuRenderer.java:377)
    at com.icesoft.faces.renderkit.dom_html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:119)
    at com.icesoft.faces.component.ext.renderkit.MenuRenderer.encodeEnd(MenuRenderer.java:51)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:861)
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:370)
    at com.icesoft.faces.renderkit.dom_html_basic.GridRenderer.encodeChildren(GridRenderer.java:208)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:358)
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:96)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
    at com.icesoft.faces.component.util.CustomComponentUtils.renderChild(CustomComponentUtils.java:339)
    at com.icesoft.faces.component.paneltabset.PanelTabSetRenderer.writeTabCell(PanelTabSetRenderer.java:977)
    at com.icesoft.faces.component.paneltabset.PanelTabSetRenderer.encodeEnd(PanelTabSetRenderer.java:423)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:861)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:503)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:456)
    at com.icesoft.faces.application.D2DViewHandler.renderView(D2DViewHandler.java:159)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
    at com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:19)
    at com.icesoft.faces.context.View$2$1.respond(View.java:48)
    at com.icesoft.faces.webapp.http.servlet.ServletRequestResponse.respondWith(ServletRequestResponse.java:201)
    at com.icesoft.faces.context.View$2.serve(View.java:77)
    at com.icesoft.faces.context.View.servePage(View.java:149)
    at com.icesoft.faces.webapp.http.core.SingleViewServer.service(SingleViewServer.java:52)
    at com.icesoft.faces.webapp.http.common.ServerProxy.service(ServerProxy.java:11)
    at com.icesoft.faces.webapp.http.servlet.MainSessionBoundServlet$4.service(MainSessionBoundServlet.java:149)
    at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
    at com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)
    at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
    at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
    at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
    at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:444)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:310)
    at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:696)
    at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:667)
    at org.apache.jsp.index_jsp._jspService(index_jsp.java:58)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
    at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:662)
Caused by: com.icesoft.faces.webapp.http.core.SessionExpiredException: User session has expired or it was invalidated.
    at com.icesoft.faces.webapp.http.servlet.ProxyHttpSession.getAttribute(ProxyHttpSession.java:77)
    at com.icesoft.faces.webapp.http.servlet.ServletSessionAttributeMap.getAttribute(ServletSessionAttributeMap.java:16)
    at com.icesoft.faces.context.AbstractAttributeMap.containsKey(AbstractAttributeMap.java:85)
    at com.sun.faces.mgbean.BeanManager.isBeanInScope(BeanManager.java:177)
    at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:82)
    at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
    at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
    at bean.Abgrenzungsreise.(Abgrenzungsreise.java:39)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at java.lang.Class.newInstance0(Class.java:355)
    at java.lang.Class.newInstance(Class.java:308)
    at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:186)
    ... 86 more 

Caused by: java.lang.IllegalStateException: getAttribute: Session already invalidated
    at org.apache.catalina.session.StandardSession.getAttribute(StandardSession.java:1032)
    at org.apache.catalina.session.StandardSessionFacade.getAttribute(StandardSessionFacade.java:110)
    at com.icesoft.faces.webapp.http.servlet.ProxyHttpSession.getAttribute(ProxyHttpSession.java:75)
    ... 100 more
2011-01-28 08:05:54,326 ERROR [com.icesoft.faces.context.View] (http-0.0.0.0-8080-3) Problem encountered during View.servePage 
com.sun.faces.mgbean.ManagedBeanCreationException: Cant instantiate class: bean.Abgrenzungsreise.
    at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:191)
    at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:106)
    at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:368)
    at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:222)
    at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:86)
    at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
    at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
    at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:61)
    at org.apache.el.parser.AstValue.getValue(AstValue.java:107)
    at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
    at javax.faces.component.UISelectItems.getValue(UISelectItems.java:141)
    at com.icesoft.faces.renderkit.dom_html_basic.MenuRenderer.getSelectItems(MenuRenderer.java:637)
    at com.icesoft.faces.renderkit.dom_html_basic.MenuRenderer.countSelectOptionsRecursive(MenuRenderer.java:448)
    at com.icesoft.faces.renderkit.dom_html_basic.MenuRenderer.renderSelect(MenuRenderer.java:377)
    at com.icesoft.faces.renderkit.dom_html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:119)
    at com.icesoft.faces.component.ext.renderkit.MenuRenderer.encodeEnd(MenuRenderer.java:51)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:861)
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:370)
    at com.icesoft.faces.renderkit.dom_html_basic.GridRenderer.encodeChildren(GridRenderer.java:208)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:358)
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:96)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
    at com.icesoft.faces.component.util.CustomComponentUtils.renderChild(CustomComponentUtils.java:339)
    at com.icesoft.faces.component.paneltabset.PanelTabSetRenderer.writeTabCell(PanelTabSetRenderer.java:977)
    at com.icesoft.faces.component.paneltabset.PanelTabSetRenderer.encodeEnd(PanelTabSetRenderer.java:423)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:861)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:503)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:456)
    at com.icesoft.faces.application.D2DViewHandler.renderView(D2DViewHandler.java:159)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
    at com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:19)
    at com.icesoft.faces.context.View$2$1.respond(View.java:48)
    at com.icesoft.faces.webapp.http.servlet.ServletRequestResponse.respondWith(ServletRequestResponse.java:201)
    at com.icesoft.faces.context.View$2.serve(View.java:77)
    at com.icesoft.faces.context.View.servePage(View.java:149)
    at com.icesoft.faces.webapp.http.core.SingleViewServer.service(SingleViewServer.java:52)
    at com.icesoft.faces.webapp.http.common.ServerProxy.service(ServerProxy.java:11)
    at com.icesoft.faces.webapp.http.servlet.MainSessionBoundServlet$4.service(MainSessionBoundServlet.java:149)
    at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
    at com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)
    at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
    at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
    at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
    at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:444)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:310)
    at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:696)
    at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:667)
    at org.apache.jsp.index_jsp._jspService(index_jsp.java:58)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
    at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:662)
Caused by: com.icesoft.faces.webapp.http.core.SessionExpiredException: User session has expired or it was invalidated.
    at com.icesoft.faces.webapp.http.servlet.ProxyHttpSession.getAttribute(ProxyHttpSession.java:77)
    at com.icesoft.faces.webapp.http.servlet.ServletSessionAttributeMap.getAttribute(ServletSessionAttributeMap.java:16)
    at com.icesoft.faces.context.AbstractAttributeMap.containsKey(AbstractAttributeMap.java:85)
    at com.sun.faces.mgbean.BeanManager.isBeanInScope(BeanManager.java:177)
    at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:82)
    at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
    at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
    at bean.Abgrenzungsreise.(Abgrenzungsreise.java:39)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at java.lang.Class.newInstance0(Class.java:355)
    at java.lang.Class.newInstance(Class.java:308)
    at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:186)
    ... 86 more
Caused by: java.lang.IllegalStateException: getAttribute: Session already invalidated
    at org.apache.catalina.session.StandardSession.getAttribute(StandardSession.java:1032)
    at org.apache.catalina.session.StandardSessionFacade.getAttribute(StandardSessionFacade.java:110)
    at com.icesoft.faces.webapp.http.servlet.ProxyHttpSession.getAttribute(ProxyHttpSession.java:75)
    ... 100 more

Ich erkannte, dass die Ausnahme eine halbe Stunde nach der letzten Benutzeraktivität ausgelöst wird.

War es hilfreich?

Lösung

Das gleiche Problem wurde in den ICEFACES -Foren berichtet:

Die vorgeschlagenen Lösungen waren:

Dies geschah für uns, sobald wir den asynchronen Modus ausgelöst haben

<!-- Specifies to the ICEfaces framework that synchronous update mode is to be
used. By default, ICEfaces uses asynchronous update mode to support
server-initiated updates (AJAX push). Setting to true will enable
synchronous update mode and disable AJAX push features. -->
<context-param>
    <param-name>com.icesoft.faces.synchronousUpdate</param-name>
    <param-value>true</param-value>
</context-param>

Als dies falsch war, bekamen wir die nette kleine Sitzungsnachricht. Wenn dies zutrifft, war das Timeout -Verhalten von Sitzungen Stack Trace.

und

In der Zwischenzeit habe ich von ICEFACES 1.8.2 zu dem, was derzeit im SVN -Repository ist (1.8,3+), umgestellt. Und das Verhalten hat sich geändert. Es gibt keinen Absturz mehr.

In Bezug auf Ihre Erklärung, dass Sie die Sitzung nirgendwo verwenden, gibt der StackTrace mit, dass sie versucht, eine Sitzung mit Scoped Managed Bean zu erstellen, wenn diese Ausnahme ausgelöst wurde. Sie verwenden also definitiv die Sitzung :)

Aktualisieren Laut den Kommentaren: Sie sollten die (anfrage basierende !!) in der Tat nicht zuweisen. FacesContext Als ein static Variable. Auch die Injektion anderer Bohnen muss von stattfinden <managed-property> in faces-config.xml. Sonst ist es überhaupt nicht "injizieren", aber gerecht manuell Zugriff auf die andere Bohne. Mit der Injektion lassen Sie JSF die Arbeit erledigen, um die andere Bohne als Eigenschaft der aktuellen Bohne festzulegen. Ein Beispiel kann gefunden werden hier.

Andere Tipps

Der Grund für die Ausnahme war in meinen Sitzungsklassen.
Ich fragte oben, ob der Grund die Injektion von Bohnen in einen anderen über den FacesContext sein kann. Jetzt gebe ich mir die Antwort: "Ja, es kann der Grund sein."

public class MySessionBean {
    private static FacesContext facesContext = FacesContext.getCurrentInstance();
    private utils.AnotherSessionBean injectedSessionBean = (utils.AnotherSessionBean) facesContext.getApplication().getELResolver().getValue(facesContext.getELContext(), null, "anotherSessionBean");
    // ...
}

Ich fühlte mich frei, den aktuellen FacesContext außerhalb einer Methode oder des Konstruktors zu instanziieren, was keine gute Idee war, da ich nach dem Sitzungs-Timeout den alten oder Mabey ohne Sitzungskontext verwendet habe. MySessionBean wurde neu geladen oder bekam eine neue Instanz davon, aber es hat den FacesContext nicht aktualisiert. Das Ergebnis davon ist oben beschrieben ^^

Schlussfolgerung: Daher gehört das FaCesContext in den CodeBlock einer Methode oder eines Konstruktors.

Vielen Dank für Ihre Hilfe!

Lizenziert unter: CC-BY-SA mit Zuschreibung
Nicht verbunden mit StackOverflow
scroll top