Yes, I've got that part down. The part I don't understand is what to do if the parameter IS null. I don't understand how I can return an ActionForward since I don't want to forward anywhere, I just want Struts to display the same .jsp associated with the current Action. Brandon Goodin <[EMAIL PROTECTED]> wrote:also if your parameter is not null then call the super.execute(mapping,form,request,response) so that the lookup does it's work as normal. The key is to override the execute method of the LookupDispatch and pass control to it only if the paramter exists in the query/request.
Brandon Goodin Phase Web and Multimedia P (406) 862-2245 F (406) 862-0354 [EMAIL PROTECTED] http://www.phase.ws -----Original Message----- From: Brandon Goodin [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 11, 2003 1:16 PM To: Struts Users Mailing List Subject: RE: LookupDispatchAction Question simple... in your execute method check to see if the mapping.getParameter is null. If it is null then have it call a method that performs some initialization (if needed) and returns an ActionForward to your jsp page. If you want code... I have done this many times. Brandon Goodin Phase Web and Multimedia P (406) 862-2245 F (406) 862-0354 [EMAIL PROTECTED] http://www.phase.ws -----Original Message----- From: Avexus Incorporated [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 11, 2003 1:11 PM To: Struts Users Mailing List Subject: RE: LookupDispatchAction Question After the user logs on they are supposed to go to a "lookup" page. This page will have no data on it when it is first displayed. This page, which is a JSP of course, will have a form and more than 1 submit button. The problem is that the page can't even be displayed because when Struts calls my Action class (which extends LookupDispatchAction), there is no value for the "submit" button. That is, Struts doesn't know which of my methods to invoke and throws an exception (the error message from my first email). This is because the user hasn't clicked any of the submit buttons yet -- they haven't even seen the page. How do I get the page to display initially? "Alvarado, Juan (c)" wrote:Okay can you please tell me what exactly it is you're trying to accomplish??? I don't quite get what your ultimate goal is. Thanks -----Original Message----- From: Avexus Incorporated [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 11, 2003 3:01 PM To: Struts Users Mailing List Subject: RE: LookupDispatchAction Question I looked at that site. That is where I found out about LookupDispatchAction. But there is nothing that I can find that tells me how to initially display a page that will subsequently use a dispatch action. In fact, I can't figure out how to do it in Struts at all without either having a plain .html page as the inital page or having 2 .jsp pages. Niether solution is good. "Alvarado, Juan (c)" wrote:I would suggest you read up on the usage of the LookupDispatchAction again. It was not designed to to be used in the way you are trying to use them. Take a look at this site http://husted.com/struts/index.html. It has some good suggestions on the correct usage of the action classes that come with struts. -----Original Message----- From: Avexus Incorporated [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 11, 2003 2:46 PM To: [EMAIL PROTECTED] Subject: LookupDispatchAction Question I am new to Struts and am trying to use the LookupDispatchAction class to display a page for the first time (i.e. the user is being navigated to this page from another page). I have everything setup fine in my struts_config.xml and Struts attempts to display my page, but was giving the following error: Request[/lookup] does not contain handler parameter named submit After researching on the archives, I realized that this message is due to the fact that the user has not yet clicked any of the "submit" button on this page (the page hasn't even been displayed yet). The suggestion on the archive is to implement something similar to the following in the Action class which extends LookupDispatchAction: public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception { if (httpServletRequest.getParameter(actionMapping.getParameter()) == null) { return defaultMethod(); } else { return super.execute(actionMapping, actionForm, httpServletRequest, httpServletResponse); } } My question is what do I return from "defaultMethod"? I have to return an ActionForward but I don't want to forward the user anywhere -- I want to display the page. How do I do this? I guess I could have 2 pages and 2 actions -- one to display the page initially and one to process the page upon "submit" -- but that is ugly and I hope not the only solution. --------------------------------- Do you Yahoo!? Yahoo! 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