从内部iframe重定向父/顶级到bean

Question

我希望能够通过bean重定向顶级/父级xhtml。我在我的bean类中尝试了以下内容：

if (result == 1) {
  FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, "You have successfully changed your password. Please log in to continue.", null));
  con.close();
  FacesContext.getCurrentInstance().getExternalContext().invalidateSession();
  return "/index?faces-redirect=true";
}

也

if (result == 1) {
  FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, "You have successfully changed your password. Please log in to continue.", null));
  con.close();
  FacesContext.getCurrentInstance().getExternalContext().invalidateSession();
  FacesContext.getCurrentInstance().redirect("/index.xhtml");
  return;
}

以上两种方法都会重定向iframe页面，但不会重定向父页面。我怎么做到这一点？

以下是我引用的其他页面，但没有运气：

• JSF page redirecting from java bean
• https://stackoverflow.com/questions/19837614/how-to-redirect-jsf-page-from-iframe-to-parent-window
• https://stackoverflow.com/questions/22072739/redirecting-iframes-parent-page-using-ajax-and-jsf