Define a "set up" action mapping which is called prior to displaying your
page.
<action path="/showSomePage"
type="com.companyname.SomeAction"
name="customerForm"
validate="false"
scope="request">
<forward name="success"
path="/somePage.jsp"
redirect="false"/>
</action>
In the corresponding XXXXAction class for the mapping do the following:
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
DynaBean bean = (DynaBean) form;
Customer customer = // get customer somehow
bean.set("cid", customer.getCid());
return mapping.findForward("success");
}
When Struts encounters the /showSomePage it will create the form, invoke
SomeAction (which will populate the form), and then forward to somePage.jsp
where the form will reside in the request scope.
HTH,
robert
> -----Original Message-----
> From: Jan Fetyko [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, September 11, 2002 7:45 AM
> To: Struts Users Mailing List
> Subject: Re: NullPointerException while extending DynaValidatorForm
>
>
> How do I allow Struts to create the form ?
> Sorry, but I'm lost here ( and there :(( ).
>
> Jf
>
> Robert Taylor wrote:
>
> >Depending on which version of Struts you are using, you may
> >need to set the dynamic attribute of the form-bean element to "true".
> >
> >I'm assuming you are explicitely creating the form to convey that
> >the NPE is not because the form is null. If this is not the case,
> >you should allow Struts to create the form.
> >
> >robert
> >
> >
> >
> >
> >>-----Original Message-----
> >>From: Jan Fetyko [mailto:[EMAIL PROTECTED]]
> >>Sent: Tuesday, September 10, 2002 11:32 AM
> >>To: struts
> >>Subject: Re: NullPointerException while extending DynaValidatorForm
> >>
> >>
> >>Looks like nobody has a recommendation on how to resolve issue described
> >>below ( at least till now).
> >>Is this working at all OR is this still a bug in the Beta version ?
> >>So, should I stick with the "old" forms for now ?
> >>
> >>Jf
> >>
> >>----------------------------------------------------------------
> ---------
> >>
> >>
> >>
> >>>Hi all,
> >>>
> >>>I have a problem setting values of a form in my action.
> >>>The form extends the "org.apache.struts.validator.DynaValidatorForm".
> >>>The struts-config.xml defines all the properties of the form except 2,
> >>>that are defined in the actual Java source of the form.
> >>>
> >>>This is the error I'm getting :
> >>>
> >>>java.lang.NullPointerException
> >>>at
> >>>
> >>>
> >>>
> >>org.apache.struts.action.DynaActionForm.getDynaProperty(DynaAction
> >>Form.java:551)
> >>
> >>
> >>>
> >>>In struts config I have :
> >>>
> >>><form-bean name="CustomerForm" type="com.forms.CustomerForm">
> >>><form-property name="cid" type="java.lang.String"/>
> >>></form-bean>
> >>>
> >>>The action is trying to set the property of the form :
> >>>
> >>>form = new CustomerForm();
> >>>CustomerForm cf = (CustomerForm) form;
> >>>cf.set("cid", customer.getCid()); // THIS iS WHERE IT ERRORS OUT.
> >>>
> >>>
> >>>
> >>>Any ideas what I'm doing wrong ?
> >>>
> >>>Jf
> >>>
> >>>
> >>>
> >>--
> >>To unsubscribe, e-mail:
> >>
> >>
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> >
> >
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