Problems with multiple-bottons on one form

[hal arres]

Hi,

I want to navigate from one form to the "previous" and to the "next" form, to realise this I am using LookupDispatchAction class.
I can navigate to the next form but always I am pushing the button "previous" I got the following Exception:

MESSAGE Request[] does not contain handler parameter named []
DESCRIPTION The request sent by the client was syntactically incorrect (Request[] does not contain handler parameter named []).

Does anyone know what this means?
Or doesn't LookupDispatchAction work and I have to use another Action-Class?

mfg hal arres

[John Smith]

Lookup dispatch action does work, the API docs were fairly self-explanatory I thought however here's a quick example:

 
public class myClass extends LookupDispatchAction
{
    protected Map getKeyMethodMap() {
        Map map = new HashMap();
        map.put("save", "Save");
        map.put("delete", "Delete");
        return map;
    }
 
    public ActionForward Save(ActionMapping mapping,
                              ActionForm form,
                              HttpServletRequest request,
                              HttpServletResponse response)
                              throws ServletException, IOException
    {
        // do save
    }
    
    public ActionForward Delete(ActionMapping mapping,
                                ActionForm form,
                                HttpServletRequest request,
                                HttpServletResponse response)
                                throws ServletException, IOException
    {
        // do delete
    }
}
 

from your struts-config:
 
        <action path="/admin/help"
                type="AdminHelpInitAction"
                name="adminHelpForm">
                <forward name="success" path="/tiles/admin/help" />
                <forward name="failure" path="/jsp/admin/admin.jsp" />
        </action>
 
        <action path="/admin/set/help"
                type="AdminHelpAction"
                name="adminHelpForm"
                parameter="method">
                <forward name="success" path="/action/admin/help" />
                <forward name="failure" path="/action/admin/help" />
        </action>
 

Hope you can see what you did wrong from this, enjoy

[hal arres]

This is my code, and I think that it is alright. But I don't know why it doesn't work.


struts-config.xml

    <action-mappings>
 
        <!-- Form 2 -->
        <action path="/searchResult"
                type="de.wizard.control.SearchResultLookupDispatchAction"
                name="searchForm"
               scope="request"
               input="/jsp/result/SearchResult.jsp"
           parameter="method">
            <forward name="back" path="/jsp/search/Search.jsp"/>
            <forward name="reset" path="/jsp/search/Welcome.jsp"/>
            <forward name="forward" path="/jsp/subscription/ServiceSubscription.jsp"/>
        </action>
 
        <!-- Form 3 -->
        <action path="/serviceSubscription"
                type="de.wizard.subscription.control.ServiceSubscriptionLookupDispatchActionu"
                name="searchForm"
               scope="request"
               input="/jsp/subscription/ServiceSubscription.jsp"
           parameter="method">
            <forward name="back" path="/jsp/result/SearchResult.jsp"/>
            <forward name="reset" path="/jsp/search/Welcome.jsp"/>
            <forward name="forward" path="/jsp/information/Information.jsp"/>
        </action>

One LookupDispatchAction-Class:

public class SearchResultLookupDispatchAction
        extends LookupDispatchAction {
 
    protected Map getKeyMethodMap() {
        HashMap map = new HashMap();
        map.put("button.back", "back");
        map.put("button.forward", "forward");
        map.put("button.reset", "reset");
        return map;
    }
 
    public ActionForward back(ActionMapping mapping, ActionForm form,
                              HttpServletRequest request,  
                              HttpServletResponse response)
            throws Exception {
        //do something
        return (mapping.findForward("back"));
    }
 
    public ActionForward forward(ActionMapping mapping, ActionForm form,
                              HttpServletRequest request, 
                              HttpServletResponse response)
            throws Exception {
        //do something
        return (mapping.findForward("forward"));
    }
 
    public ActionForward reset(ActionMapping mapping, ActionForm form,
                              HttpServletRequest request, 
                              HttpServletResponse response)
            throws Exception {
        //do something
        return (mapping.findForward("reset"));
    }
}

I can go forward, to the next form, but not to the previous.
[ November 01, 2004: Message edited by: hal arres ]

[hal arres]

I found my mistake:

In resource-properties is a german word "Zur�ck" using an umlaut (�, �, �). This is something like a special character. But there is no german word to paraphrase it.

Does anyone know what to do about it?