Entrar Ainda não tem acesso?
1
resposta

Não sou direcionado quando acesso livro.xhtml sem fazer login e as fases do JSF estão sendo chamada duas vezes.

Referente ao curso Java e JSF I: Sua aplicação web com JSF2, no capítulo Autorização pelo PhaseListener e atividade Vídeo 2

por welber marques
| 302.5k xp | 52 posts

Quando acesso livro.xhtml sem fazer login. 

Fase: RESTORE_VIEW 1
Fase: RESTORE_VIEW 1
/livro.xhtml
/livro.xhtml
fev 15, 2017 7:00:52 AM com.sun.faces.context.ExceptionHandlerImpl throwIt
INFORMAÇÕES: Exception when handling error trying to reset the response.
java.lang.IllegalStateException: Cannot call sendRedirect() after the response has been committed
    at org.apache.catalina.connector.ResponseFacade.sendRedirect(ResponseFacade.java:494)
    at com.sun.faces.context.ExternalContextImpl.redirect(ExternalContextImpl.java:678)
    at com.sun.faces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:221)
    at com.sun.faces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:183)
    at br.com.caelum.livraria.util.Autorizador.afterPhase(Autorizador.java:34)
    at com.sun.faces.lifecycle.Phase.handleAfterPhase(Phase.java:189)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:107)
    at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:123)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)

fev 15, 2017 7:00:52 AM org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: Servlet.service() for servlet [Faces Servlet] in context with path [/livraria] threw exception [Cannot call sendRedirect() after the response has been committed] with root cause
java.lang.IllegalStateException: Cannot call sendRedirect() after the response has been committed
    at org.apache.catalina.connector.ResponseFacade.sendRedirect(ResponseFacade.java:494)
    at com.sun.faces.context.ExternalContextImpl.redirect(ExternalContextImpl.java:678)
    at com.sun.faces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:221)
    at com.sun.faces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:183)
    at br.com.caelum.livraria.util.Autorizador.afterPhase(Autorizador.java:34)
    at com.sun.faces.lifecycle.Phase.handleAfterPhase(Phase.java:189)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:107)
    at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:123)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)

E fica assim quando acesso a página login.xhtml: Chamando as fase duas vezes. 

Fase: RESTORE_VIEW 1
Fase: RESTORE_VIEW 1
/login.xhtml
/login.xhtml
Fase: RENDER_RESPONSE 6
Fase: RENDER_RESPONSE 6

Classe autorizador:

public class Autorizador implements PhaseListener{

    private static final long serialVersionUID = 1L;

    @Override
    public void afterPhase(PhaseEvent event) {

        FacesContext context = event.getFacesContext();        
        String nomePagina = context.getViewRoot().getViewId();

        System.out.println(nomePagina);

        if("/login.xhtml".equals(nomePagina)) {
            return;
        }

        Usuario usuarioLogado = (Usuario) context.getExternalContext().getSessionMap().get("usuarioLogado");

        if(usuarioLogado != null) {
            return;
        }

        NavigationHandler handler = context.getApplication().getNavigationHandler();
        handler.handleNavigation(context, null, "/login?faces-redirect=true");
        context.renderResponse();

    }

    @Override
    public void beforePhase(PhaseEvent event) {
    }

    @Override
    public PhaseId getPhaseId() {        
        return PhaseId.RESTORE_VIEW;
    }

}

Classe LogPhaseListener

public class LogPhaseListener implements PhaseListener{

    private static final long serialVersionUID = 1L;

    @Override
    public void afterPhase(PhaseEvent arg0) {
    }

    @Override
    public void beforePhase(PhaseEvent event) {
        System.out.println("Fase: " + event.getPhaseId());
    }

    @Override
    public PhaseId getPhaseId() {        
        return PhaseId.ANY_PHASE;
    }




}
1 resposta
por Alberto Souza
| 2676.6k xp | 5740 posts
Instrutor Desenvolvedor e Instrutor

Opa, será que essa dúvida consegue te ajudar => https://cursos.alura.com.br/forum/topico-erro-500-ao-clicar-em-logout-30168 ? realmente ta rolando algum redirect duplo.