final HttpServletRequest request = MgnlContext.getWebContext().getRequest();
final HttpServletResponse response = MgnlContext.getWebContext().getResponse();
// setup spring request context in spring web context
final RequestContext requestContext = new RequestContext(request, response, servletContext, vars);
vars.put(SpringContextVariableNames.SPRING_REQUEST_CONTEXT, requestContext);
// copy all spring model attributes into the spring web context as variables
vars.putAll(RenderContext.get().getModel());