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]> > > > For additional commands, e-mail: > > > <mailto:[EMAIL PROTECTED]> > > > > > > -- > > > 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]> > > For additional commands, e-mail: > > <mailto:[EMAIL PROTECTED]> > > > > -- > > 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]> > 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]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
