The preload action does not set anything for the subForm, and therefore
the string is blank.
SuperForm superForm = (SuperForm) form;
String someValue = "some Value";
System.out.println("PreloadAction is setting myField to \"" +
someValue + "\"");
superForm.setMyField(someValue);
return new ActionForward("/test.jsp");
superForm and subForm are separate objects, and don't share data.
-- Ted Husted, Husted dot Com, Fairport NY USA.
-- Custom Software ~ Technical Services.
-- Tel +1 716 737-3463
-- http://www.husted.com/about/struts/
"Wiechert, Holger" wrote:
>
> I tried to use now all qualifications as I could (at least, that
> I know) -- still the same result:
> when using the sub class form, the hidden field could not
> get retrieved. I shifted the classes (Forms and Actions) to
> a package now (I think I read once something that
> tomcat has problems with default package classes -- just in case).
> Unfortunately, I had a hard time to post a war file. It took
> hours until it came through all kinds of blockers. So I'll send the
> source within a zip file this time. Sorry for the ones that want
> to take the time to run it and now have the extra work. The struts.jar
> is again not included.
>
> The updated jsp (test.jsp) that calls the SuperAction or the SubAction (with
> the forms SuperForm, SubForm resp.) now is:
>
> <%@ page language="java" %>
> <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
> <html:html locale="true">
> <head>
> <title>Test</title>
> <html:base/>
> </HEAD>
> <BODY>
> <html:form action="/super.do" name="superForm" type="supertest.SuperForm">
> <html:hidden name="superForm" property="myField" name="superForm"/>
> <html:submit property="command" value="Super Action"/>
> </html:form>
> <html:form action='/sub.do' name="subForm" type="supertest.SubForm">
> <html:hidden name="subForm" property="myField" name="subForm"/>
> <html:submit property="command" value="Sub Action"/>
> </html:form>
> </body>
> </html:html>
>
> You start the test using start.jsp (web.xml also defaults to this jsp).
>
> Unfortunately, I don't have the time to go through the struts code.
> I'm some sort of "superbusy" here.
>
> Btw., Thanks to Helmut/Cobbie.Behrend:
> Looks like, the things you suggested don't work too, see above.
>
> Regards,
> Holger
>
> -----Ursprungliche Nachricht-----
> Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Gesendet: Dienstag, 18. September 2001 19:00
> An: [EMAIL PROTECTED]
> Betreff: Re: Unable to handle ActionForm class hierarchies?
>
> Have you tried specifying the name explicitly? As in: <html:hidden name
> ="superForm" property="myField"/>
>
> I have experienced this same error when having more than one form in a
> session with the same property's. The actionForm associated with a
> particular action was not being set. After specifying the name explicitly
> the desired property was set.
>
> cobbie
>
>
> -----Ursprungliche Nachricht-----
> Von: Wiechert, Holger
> Gesendet: Dienstag, 18. September 2001 17:16
> An: User-Struts (E-Mail)
> Betreff: Unable to handle ActionForm class hierarchies?
>
> I've got a problem when using class hierarchies for ActionForms.
> There are two ActionForms: SuperForm and SubForm (as can be guessed,
> SubForm inherits from SuperForm). Then there are two Actions,
> SuperAction and SubAction, where SuperAction uses SuperForm
> and SubAction uses SubForm. The JSP that calls (via POST) either
> SuperAction or SubAction contains a hidden field in the form tag:
>
> test.jsp:
>
> <BODY>
> <html:form action="/super.do">
> <html:hidden property="myField"/>
> <html:submit property="command" value="Super Action"/>
> </html:form>
> <html:form action='/sub.do'>
> <html:hidden property="myField"/>
> <html:submit property="command" value="Sub Action"/>
> </html:form>
> </body>
>
> The field "myField" is member of the SuperForm.
> A PreloadAction initializes the myField field and then
> forwards to start.jsp.
> The thing is, when I call the SuperAction, the myField's
> value can get retrieved and when I call SubAction, it reads
> an empty string. For some reason, the myField will be set to
> this empty string, before the request is forwarded to
> SubAction.
> I included a war file that demonstrates this.
> So, is this a bug or am I doing something wrong here?
> I desperately need this feature (and besides this, I'm really
> short in time, unfortunately).
>
> Help greatly appreciated!
> Thanks in advance,
> Holger
>
> ------------------------------------------------------------------------
> Name: superforms.zip
> superforms.zip Type: Zip Compressed Data (application/x-zip-compressed)
> Encoding: base64
