Wicket: how to render page programmatically and get result as string?

Question

I\'m in the process of converting an app to use i18n/l10n on all its pages. I\'m very happy with Wicket\'s support for this, and it\'s going well so far. The one tricky part

Answer 1

If you just want the raw code, here it is: (This is practically the same as the solution described in the article.)

//I assumed that you want to use the current user's session for rendering. If this isn't the case, you'll have to use a mock session
MockHttpServletRequest mockReq = new MockHttpServletRequest( WebApplication.get(), ((WebRequest)getRequest()).getHttpServletRequest().getSession(), WebApplication.get().getServletContext() ); 
MockHttpServletResponse mockRes = new MockHttpServletResponse( mockReq );
WebResponse res = new WebResponse(mockRes);
ServletWebRequest req = new ServletWebRequest( mockReq );
RequestCycle cycle = new WebRequestCycle( WebApplication.get(), req, res );
PageParameters pp = new PageParameters();
//add page parameters here
//Your email page should really be a bookmarkable page, but if it isn't, you can replace the request target with something that better suits your case
cycle.request( new BookmarkablePageRequestTarget( EmailPage.class, pp ));
System.out.println( mockRes.getDocument() );

Answer 2

Two article regarding to this:

Render a Wicket page to a string for HTML email

Rendering Panel to a String

Currently the only other approach was using WicketTester for that, but I do not remember details how to do that.

Answer 3

For newer Wicket versions: 6.7.0 came with a new ComponentRenderer precisely for this purpose!