Hm, well, here's something goofy to try:
public class MyForm extends ActionForm {
public void reset(ActionMapping mapping,
HttpServletRequest request) {
MyForm preview = new MyForm();
try {
RequestUtils.populate(preview, request);
// use preview to get at request params
} catch (ServletException exc) {
// handle exc
}
}
}
Not that I recommend creating the extra garbage, mind you, but if you absolutely
positively have to get at the request parameters of a multipart/form-data
request within reset...
Quoting Andrew Hill <[EMAIL PROTECTED]>:
> Yep. Thats what he is using. Struts is kind enough to provide the request
> wrapper object that will provide the parameters , but it doesnt populate it
> until after reset() is called.
> It would be far more useful if it did it earlier (IMHO at the start of
> request processing!).
>
> -----Original Message-----
> From: Kris Schneider [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, November 20, 2002 00:56
> To: Struts Users Mailing List
> Subject: RE: Loosing my parameter in the multipart request
>
>
> Just to clarify, your specific situation violates #3. The content type of
> your
> request is multipart/form-data, right?
>
> Quoting Kris Schneider <[EMAIL PROTECTED]>:
>
> > Sure, you can do anything with the request object you want. The caveat is
> > that
> > the getParameter methods will only work if the requirements of the
> > following
> > section of the 2.3 spec have been met:
> >
> > SRV.4.1.1 When Parameters Are Available
> >
> > The following are the conditions that must be met before post form data
> will
> > be
> > populated to the parameter set:
> >
> > 1. The request is an HTTP or HTTPS request.
> > 2. The HTTP method is POST
> > 3. The content type is application/x-www-form-urlencoded
> > 4. The servlet has made an initial call of any of the getParameter family
> > of
> > methods on the request object.
> >
> > If the conditions are not met and the post form data is not included in
> the
> > parameter set, the post data must still be available to the servlet via
> the
> > request object’s input stream. If the conditions are met, post form data
> will
> > no
> > longer be available for reading directly from the request object’s input
> > stream.
> >
> > Quoting "Murray, Christopher" <[EMAIL PROTECTED]>:
> >
> > > what if you wanted to retrieve a request parameter for a branch in your
> > > reset method ?
> > >
> > > -----Original Message-----
> > > From: Kris Schneider [mailto:[EMAIL PROTECTED]]
> > > Sent: 19 November 2002 15:55
> > > To: Struts Users Mailing List
> > > Subject: RE: Loosing my parameter in the multipart request
> > >
> > >
> > > Sure, but that's just the normal flow of form processing:
> > >
> > > reset -> populate -> validate
> > >
> > > Quoting "Murray, Christopher" <[EMAIL PROTECTED]>:
> > >
> > > > It would also appear that the request parameters are only revealed
> once
> > > the
> > > > ActionForm has been populated.
> > > >
> > > > i.e. my reset method exploded but when I commented it out the
> validate
> > > > worked fine.
> > > >
> > > > -----Original Message-----
> > > > From: Kris Schneider [mailto:[EMAIL PROTECTED]]
> > > > Sent: 19 November 2002 13:39
> > > > To: Struts Users Mailing List
> > > > Subject: Re: Loosing my parameter in the multipart request
> > > >
> > > >
> > > > If the request content type isn't application/x-www-form-urlencoded,
> > then
> > > > the
> > > > getParameter family of methods won't work. However, I'm guessing that
> > > > Struts
> > > > will handle this for you if you make userAction a property on an
> > > > ActionForm.
> > > > Your app logic may need to change in that case since Struts will
> > populate
> > > > the
> > > > form *after* reset has been called. In other words, you'd do
> something
> > > like
> > > > this
> > > > in your Action:
> > > >
> > > > UploadForm upload = (UploadForm)form;
> > > > if (Constants.STAGE_ACTION_METHOD.equals(upload.getUserAction())) {
> > > > ...
> > > > }
> > > >
> > > > Quoting "Murray, Christopher" <[EMAIL PROTECTED]>:
> > > >
> > > > > Hey there guys n gals,
> > > > >
> > > > > I seem to be loosing a parameter of my request when I submit a
> > > multi-part
> > > > > form.
> > > > >
> > > > > In the page I have a,
> > > > >
> > > > > <input type="hidden" name="userAction"/>
> > > > >
> > > > > this is written to by a call to,
> > > > >
> > > > > <a
> > > > >
> > > >
> > >
> >
> href="javascript:submitFormDispatch('UploadForm','performUpload')">LINK</a>
> > > > >
> > > > > which calls,
> > > > >
> > > > > function submitFormDispatch( formname, value )
> > > > > {
> > > > > var form = document.forms[ formname ];
> > > > > var elements = form.elements;
> > > > >
> > > > > elements[ 'userAction' ].value = value;
> > > > > alert("userAction =" + value);
> > > > > form.submit();
> > > > > }
> > > > >
> > > > > Now I know this is working because the alert pops up to tell me.
> > > > >
> > > > > When the reset method is called in the ActionForm I get a null
> > pointer
> > > > > exception because no parameter is found for the action mapping set
> in
> > > the
> > > > > struts-config.xml,
> > > > >
> > > > > <action path="/.../upload"
> > > > > type="com...UploadAction"
> > > > > name="UploadForm"
> > > > > scope="session"
> > > > > validate="true"
> > > > > input="/.../upload.jsp"
> > > > > parameter="userAction">
> > > > > <forward name="displayInputForm"
> > > > > path="/.../upload.jsp"></forward>
> > > > > <forward name="confirmUpload"
> > > > > path="/.../Upload_confirmed.jsp"></forward>
> > > > > <forward name="fail" path="/.../error"/>
> > > > > </action>
> > > > >
> > > > > And then in the form I've been using,
> > > > >
> > > > > public void reset(ActionMapping mapping, HttpServletRequest
> > > request){
> > > > >
> > > > > FWLog log = FWLogManager.getLog("UploadActionForm");
> > > > > log.debug("Entering UploadActionForm.reset");
> > > > >
> > > > > System.out.println("mapping.getParameter() = " +
> > > > > mapping.getParameter());
> > > > >
> > > System.out.println("request.getParameter(mapping.getParameter())
> > > > =
> > > > > ");
> > > > >
> > > System.out.println(request.getParameter(mapping.getParameter()));
> > > > >
> > > > > System.out.println("request = " + request.toString());
> > > > >
> > > > > if
> > > > >
> > > >
> > >
> >
> (request.getParameter(mapping.getParameter()).equals(Constants.STAGE_ACTION_
> > > > > METHOD)){
> > > > >
> > > > > this.emailText = null;
> > > > > contactId = null;
> > > > > log.debug("email text has been reset.");
> > > > > }
> > > > >
> > > > > log.debug("Entering UploadActionForm.reset");
> > > > > }
> > > > >
> > > > > When all this executes this outputs
> > > > >
> > > > > mapping.getParameter() = userAction
> > > > > request.getParameter(mapping.getParameter()) =
> > > > > null
> > > > > request = org.apache.struts.upload.MultipartRequestWrapper@799ca4
> > > > >
> > > > > java.lang.NullPointerException
> > > > > at com...web.action.UploadActionForm.reset(Unknown Source)
> > > > >
> > > > > Guessing that a Multipart request is a different request object.
> > > > >
> > > > > Have you got any suggestions ?
> > > > >
> > > > > Is this possible ?
> > > > >
> > > > > --
> > > > > To unsubscribe, e-mail:
> > > > > <mailto:[EMAIL PROTECTED]>
> > > > > For additional commands, e-mail:
> > > > > <mailto:[EMAIL PROTECTED]>
> > > > >
> > > >
> > > >
> > > > --
> > > > Kris Schneider <mailto:[EMAIL PROTECTED]>
> > > > D.O.Tech <http://www.dotech.com/>
> > > >
> > > > --
> > > > To unsubscribe, e-mail:
> > > > <mailto:[EMAIL PROTECTED]>
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> > > > <mailto:[EMAIL PROTECTED]>
> > > >
> > > > --
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> > > >
> > >
> > >
> > > --
> > > Kris Schneider <mailto:[EMAIL PROTECTED]>
> > > D.O.Tech <http://www.dotech.com/>
> > >
> > > --
> > > To unsubscribe, e-mail:
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> > > For additional commands, e-mail:
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> > > <mailto:[EMAIL PROTECTED]>
> > >
> >
> >
> > --
> > Kris Schneider <mailto:[EMAIL PROTECTED]>
> > D.O.Tech <http://www.dotech.com/>
> >
> > --
> > To unsubscribe, e-mail:
> > <mailto:[EMAIL PROTECTED]>
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> >
>
>
> --
> Kris Schneider <mailto:[EMAIL PROTECTED]>
> D.O.Tech <http://www.dotech.com/>
>
> --
> To unsubscribe, e-mail:
> <mailto:[EMAIL PROTECTED]>
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> <mailto:[EMAIL PROTECTED]>
>
>
> --
> To unsubscribe, e-mail:
> <mailto:[EMAIL PROTECTED]>
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>
--
Kris Schneider <mailto:[EMAIL PROTECTED]>
D.O.Tech <http://www.dotech.com/>
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