Maybe he could check that in the jsp as well. Then maybe it's a little
simpler to do. say
(roughly) :
.....
if (request.getParameter("blah")==null) { 
   ....print something meaningful instead. 
 

On Fri, 20 Aug 2004 18:15:48 -0700, Justin Ruthenbeck
<[EMAIL PROTECTED]> wrote:
> 
> There is no Tomcat magic configuration parameter to make this
> happen.  Instead, take a look at HttpServletRequestWrapper.  You can
> combine that with a Filter to override the behavior of getParameter() for
> the pages that need it such that it returns "" instead of "null" when no
> such parameter value exists.
> 
> If you're unfamiliar with the above concepts, check Google, so see:
> http://www.javaworld.com/javaworld/jw-06-2001/jw-0622-filters-p4.html
> 
> Good luck,
> justin
> 
> At 04:54 PM 8/20/2004, you wrote:
> >Hi,
> >
> >I have the following JSP fragment:
> >
> >....
> >case 1 = <%=request.getParameter("no_such_thing")%>
> >case 2 = ${requestScope["no_such_thing"]}
> >....
> >
> >The output of the page is
> >
> >...
> >case 1 = null
> >case 2 =
> >...
> >
> >Is there any way that Tomcat can be configured to not display the word
> >"null" if the value is null?  It is easy to replace the above example in
> >case 1 by case 2, but in my case it is not easy to make such change to
> >my existing code base (which I am migrating from another servlet engine
> >that outputs null as "").  I have pages with the <input type=text>
> >elements displaying the string "null" when there is no default value.
> >
> >Thanks,
> >--
> >Rick
> >
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> ______________________________________________
> Justin Ruthenbeck
> Lead Software Engineer, NextEngine Inc.
> justinr - AT - nextengine DOT com
> Confidential. See:
> http://www.nextengine.com/confidentiality.php
> ______________________________________________
> 
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