I tried but failed, unfortunately.  I guess the *operation* will be kept as
a request parameter if mapping.findForward() is used, EVEN if you remove
*operation* from your ActionForm.
Thanks for your attention.
Denis

-----Original Message-----
From: Larry Zappeterrini [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 20, 2003 3:42 PM
To: 'Struts Users Mailing List'
Subject: RE: reset a request parameter to null


Using your second below method but without including the parameter operation
in the
query string should accomplish. So the code would look like:

        return new ActionForward(mapping.findForward("success").getPath() +
"?versionId=" + versionId);

Any calls to request.getParameter("operation") should return null after
that.

Larry

-----Original Message-----
From: Denis Wang [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 20, 2003 3:30 PM
To: Struts Users Mailing List
Subject: RE: reset a request parameter to null


thanks for your reply.  just as this email's subject, I am trying to set a
request *parameter* to null.
Denis

-----Original Message-----
From: Sri Sankaran [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 20, 2003 3:28 PM
To: Struts Users Mailing List
Subject: RE: reset a request parameter to null


It isn't clear what you are trying to achieve;  however one thing that jumps
out is your use of request *attributes* as opposed to request *parameters*.
When you append a URI thusly:

  foo?operation=bar&baz=gak

you are providing *parameters* and not attributes.

Sri

-----Original Message-----
From: Denis Wang [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 20, 2003 3:19 PM
To: Struts Users Mailing List
Subject: reset a request parameter to null


Hello, all,
What is the easiest way to set the request paramter to null?
I have OneForm and TwoForm, both of which have a field of "operation". After
OneAction is finished, the request will be forwarded to TwoAction. The wierd
thing is that I cannot reset the "operation" parameter. I tried in the
OneAction:
        request.setAttribute( "operation", null );
        OneForm.setOperation( null );
        request.removeAttribute( "operation" );

        return new ActionForward( mapping.findForward( "success" ).getPath()
+ "?operation=&versionId=" + versionId );

All above approaches do not work.  The last one comes really close to set
operation="".  Does anybody have a decent way to set the parameter to null?
Thanks. Denis



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