java.lang.IllegalStateException en com.sun.faces.context.FacesContextImpl.assertNotReleased

Question

Si pulso los mensajes de error botón submit` se tiran al registro del servidor

login.xhtml

<h:form> 
    <p:panel header="Login"> 

     <p:messages id="msgs" showDetail="true"/> 

     <h:panelGrid columns="2" columnClasses="column" cellpadding="5"> 

      <h:outputLabel for="user" value="Username" /> 
      <h:inputText id="user" value="#{login.username}" /> 

      <h:outputLabel for="pw" value="Passwort" /> 
      <h:inputSecret id="pw" redisplay="false" value="#{login.password}" /> 

     </h:panelGrid> 
     <p:commandButton value="Anmelden" action="#{login.login}" type="submit" update="msgs" /> 
    </p:panel> 
</h:form> 

Login.java

@ManagedBean 
@ViewScoped 
public class Login { 

    private FacesContext fCtx; 
    private String username; 
    private String password; 

    public Login() { 
     fCtx = FacesContext.getCurrentInstance(); 
    } 

     public String login(){ 
    //  HttpSession session = (HttpSession) fCtx.getExternalContext().getSession(true); 
    //  String sessionId = session.getId(); 
      fCtx.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO,"Info: ", getUsername()+", "+getPassword()+", ")); 

     return "start.xhtml"; 
    } 
    public void setUsername(String username) { 
     this.username = username; 
    } 
    public String getUsername() { 
     return username; 
    } 
    public void setPassword(String password) { 
     this.password = password; 
    } 
    public String getPassword() { 
     return password; 
    } 
} 

Error Stack Trace

05.01.2011 15:24:00 com.sun.faces.application.ActionListenerImpl processAction 
SCHWERWIEGEND: java.lang.IllegalStateException 
javax.faces.el.EvaluationException: java.lang.IllegalStateException 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:98) 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:98) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:311) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:781) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1246) 
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:77) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97) 
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:114) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:308) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:259) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:281) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
    at java.lang.Thread.run(Thread.java:619) 
Caused by: java.lang.IllegalStateException 
    at com.sun.faces.context.FacesContextImpl.assertNotReleased(FacesContextImpl.java:635) 
    at com.sun.faces.context.FacesContextImpl.addMessage(FacesContextImpl.java:471) 
    at org.dhbw.stg.wwi2008c.mopro.ui.managedBeans.Login.login(Login.java:24) 
    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:597) 
    at org.apache.el.parser.AstValue.invoke(AstValue.java:262) 
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278) 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:102) 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:84) 
    ... 23 more 
05.01.2011 15:24:00 com.sun.faces.lifecycle.InvokeApplicationPhase execute 
WARNUNG: #{login.login}: java.lang.IllegalStateException 
javax.faces.FacesException: #{login.login}: java.lang.IllegalStateException 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:114) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:311) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:781) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1246) 
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:77) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97) 
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:114) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:308) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:259) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:281) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
    at java.lang.Thread.run(Thread.java:619) 
Caused by: javax.faces.el.EvaluationException: java.lang.IllegalStateException 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:98) 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:98) 
    ... 22 more 
Caused by: java.lang.IllegalStateException 
    at com.sun.faces.context.FacesContextImpl.assertNotReleased(FacesContextImpl.java:635) 
    at com.sun.faces.context.FacesContextImpl.addMessage(FacesContextImpl.java:471) 
    at org.dhbw.stg.wwi2008c.mopro.ui.managedBeans.Login.login(Login.java:24) 
    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:597) 
    at org.apache.el.parser.AstValue.invoke(AstValue.java:262) 
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278) 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:102) 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:84) 
    ... 23 more 
javax.faces.FacesException: #{login.login}: java.lang.IllegalStateException 
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:85) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97) 
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:114) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:308) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:259) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:281) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
    at java.lang.Thread.run(Thread.java:619) 
Caused by: javax.faces.FacesException: #{login.login}: java.lang.IllegalStateException 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:114) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:311) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:781) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1246) 
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:77) 
    ... 18 more 
Caused by: javax.faces.el.EvaluationException: java.lang.IllegalStateException 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:98) 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:98) 
    ... 22 more 
Caused by: java.lang.IllegalStateException 
    at com.sun.faces.context.FacesContextImpl.assertNotReleased(FacesContextImpl.java:635) 
    at com.sun.faces.context.FacesContextImpl.addMessage(FacesContextImpl.java:471) 
    at org.dhbw.stg.wwi2008c.mopro.ui.managedBeans.Login.login(Login.java:24) 
    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:597) 
    at org.apache.el.parser.AstValue.invoke(AstValue.java:262) 
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278) 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:102) 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:84) 
    ... 23 more 

¿Cuál es el problema de cómo puedo solucionarlo?

Answer 1

Su error es aquí:

@ManagedBean 
@ViewScoped 
public class Login { 

    private FacesContext fCtx; 

    public Login() { 
     fCtx = FacesContext.getCurrentInstance(); 
    } 
} 

Debe Nunca asignar FacesContext como variable de instancia de una visión/sesión/aplicación en el ámbito gestionado frijol y reutilizarla en diferentes solicitudes, debido a que la instancia actual de la FacesContext está vinculado a la solicitud actual, lo que hace que inherentemente solicite un ámbito (pero preferiblemente tampoco lo hace en los beans de ámbito solicitado debido a un estilo pobre que puede ser confuso para los principiantes).

La instancia de FacesContext se libera al finalizar la solicitud. En solicitudes posteriores, la instancia obtenida en una solicitud anterior ya no es válida. Si hubiera funcionado, todos los métodos getter en ExternalContext le habrían devuelto las propiedades (parámetros, cookies, encabezados, etc.) de una solicitud HTTP anterior y todos los métodos setter se establecerían en una respuesta HTTP anterior que ya se había comprometido por mucho tiempo. Esto simplemente no está bien.

Siempre debe obtenerlo por subprocesos locales (es decir, directamente dentro del bloque de métodos). En su caso específico, simplemente obtener de ella hacia el interior del método login():

public String login() { 
    FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, "Info: ", getUsername() + ", " + getPassword() + ", ")); 
    return "start.xhtml"; 
}