On 12/12/05, David Evans <[EMAIL PROTECTED]> wrote: > Hello all, > > I have a requirement for a dynamically created menu on all pages of a > web site i am creating. So i created an action that creates a List of > MenuItems, and then forwards to a jsp that uses jstl to forEach through > the list and generate the appropriate html. the jsp page only has the > snippet of html for the menu div of the page. I am including this action > in "static" html pages via the use of apaches SSI module like this: > <!--#include virtual="/apps/footer" --> > > and thought i was going to use jsp:include to include it in all of the > jsp pages to which my applications actions are forwarding, like this: > <jsp:include page="/apps/footer" /> > > However when i attempt to do that i get a: > > java.lang.IllegalStateException: Cannot forward after response has been > committed > > This does work: > <c:import url="http://www.domainname.com/apps/footer"; /> > but i'd prefer not to have to use that, because then i'll have to change > it when things move from dev to production, so far my jsp's have no site > specific information, so i can just copy them. > > So can someone tell me how/if i can include the results of an action in > a jsp that is being forwarded to from another action? > > Thanks > > Dave
First of all, seems that you use older JSP container, which flushes inclided fragments. I guess this is the cause of your error. You need to use JSP 1.2+ to be able to not flush included fragments. Even if you do use JSP 1.2+, you won't be able to forward from included fragment because servlet spec sucks. Read more about it in my article in the chapter "JSP/Servlet compatibility": http://today.java.net/pub/a/today/2005/08/04/jspcomponents.html?page=3 So, I believe that you don't have luck with <jsp:include> before servlet spec gets updated. I stuck at the same spot, and I built a roundtrip. Instead of this: composite page -> (include) -> Struts action -> (forward) -> JSP fragment I use this: composite page -> (include) -> Struts action, returns null -> (render) -> JSP fragment So, no forwarding from included fragment now, all according to spec. Check out http://jspcontrols.sourceforge.net for more insight. Also, see live demos here: http://www.superinterface.com/jspcontrols As a bonus, the component can be included via <jsp:include> and then updated with Ajax. Ajax-enabled component works in non-Ajax browser too. Caveat: in this version the components are based on HTML FORM only. Next version will allow to use any HTML fragment. But you can borrow some ideas for yourself. Michael. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
