render a wicket web page to a String

WicketUtils.java

    public static String renderPage(Class<? extends Page> pageClass, PageParameters pageParameters)
    {
        WebApplication application = WebApplication.get();
        ServletContext context = application.getServletContext();  //fake a request/response cycle
        MockHttpSession servletSession = new MockHttpSession(context);
        servletSession.setTemporary(true);
        MockHttpServletRequest servletRequest = new MockHttpServletRequest(application, servletSession, context);
        MockHttpServletResponse servletResponse = new MockHttpServletResponse(servletRequest);  //initialize request and response
        servletRequest.initialize();
        servletResponse.initialize();

        WebRequest webRequest = new ServletWebRequest(servletRequest);
        BufferedWebResponse webResponse = new BufferedWebResponse(servletResponse);
        webResponse.setAjax(true);
        WebRequestCycle requestCycle = new WebRequestCycle(application, webRequest, webResponse);
        requestCycle.setRequestTarget(new BookmarkablePageRequestTarget(pageClass, pageParameters));

        try
        {
            requestCycle.getProcessor().respond(requestCycle);
            log.info("Response after request: " + webResponse.toString());

            if (! requestCycle.wasHandled())
            {
                requestCycle.setRequestTarget(new WebErrorCodeResponseTarget(HttpServletResponse.SC_NOT_FOUND));
            }

            requestCycle.detach();
        }
        finally
        {
            requestCycle.getResponse().close();
        }

        return webResponse.toString();
    }