Application application = facesContext.getApplication();
ViewHandler applicationViewHandler = application.getViewHandler();
String renderKitId = applicationViewHandler.calculateRenderKitId(facesContext);
renderKit = renderFactory.getRenderKit(facesContext, renderKitId);
}
writer = renderKit.createResponseWriter(((HttpServletResponse)
facesContext.getExternalContext().getResponse()).getWriter(), null, null);
}
ResponseUtils.ensureNoCacheHeader(facesContext);
writer.startElement("redirect", null);
writer.writeAttribute("url", url, null);