我可以退出但我可以通过浏览器返回按钮

Question

抱歉我的英语。

我有这个xhtml：

<p:menuitem value="Sair" url="login.jsf" icon="sair" action="#{loginBean.invalidaSessao()}"/>

和这个Bean：

public void invalidaSessao() {
    System.out.println("Chamou...");
    FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove("loginBean");
    NavigationHandler handler =            FacesContext.getCurrentInstance().getApplication().getNavigationHandler();
    logout();
    handler.handleNavigation(FacesContext.getCurrentInstance(), null, "login.jsf");
    FacesContext.getCurrentInstance().renderResponse();
}

和过滤器;

@WebFilter(servletNames={"Faces Servlet"}) // Must match <servlet-name> of your FacesServlet.
public class NoCacheFilter implements Filter {

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
    HttpServletRequest req = (HttpServletRequest) request;
    HttpServletResponse res = (HttpServletResponse) response;
    System.out.print("Chamou!!!");
    if (!req.getRequestURI().startsWith(req.getContextPath() + ResourceHandler.RESOURCE_IDENTIFIER)) { // Skip JSF resources (CSS/JS/Images/etc)
        res.setHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // HTTP 1.1.
        res.setHeader("Pragma", "no-cache"); // HTTP 1.0.
        res.setDateHeader("Expires", 0); // Proxies.
    }

    chain.doFilter(request, response);
}

我可以退出该应用程序，但我可以返回浏览器按钮。