reset a request parameter to null

[Denis Wang <dw...@brandmuscle.com>]

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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