In my Action subclass, rather than returning the results of mapping.findForward(...) I need to forward to a page determined at runtime. What is the *proper* way to forward to xxx.jsp? Should I construct an ActionForward? (tried that unsuccessfully).
String path = ... create context-relative path to new page ...
return (new ActionForward(path));
The path you calculate must be context relative and start with a slash, exactly like the "path" attributes to your standard <forward> elements.