// If the rewritten form action contains request parameters, turn them into hidden fields --
// it's not legal to include them in the action URI on a GET.
HttpServletResponse response = (HttpServletResponse) pageContext.getResponse();
if (_actionUrl != null) {
_state.action = response.encodeURL(_actionUrl);
}
WriteRenderAppender writer = new WriteRenderAppender(pageContext);
TagRenderingBase br = TagRenderingBase.Factory.getRendering(TagRenderingBase.FORM_TAG, request);
br.doStartTag(writer, _state);