I'd have to agree with you on that one.

I downloaded Tomcat 5.0.28 from the site, http://jakarta.apache.org/tomcat , 
then dropped the pages into the ROOT folder, along with my JSTL 1.0 libs (from 
jdev 10.1.2).  Once I tweaked the jsp page (for parsing) to use a different URI 
for the TLD - as noted in another site), the page worked as you said.  [NOTE 
that it appears I'm not really comparing apples to apples here as I'm using a 
NEWER container (servlet 2.4/jsp 2.0) and an old JSTL version to compare 
against OC4J 10.1.2, which I think is Servlet 2.3/jsp 1.2, but still, it works.

Thanks for the quick response yesterday!!


-----Original Message-----
From: Martin Cooper [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 03, 2005 2:29 PM
To: Tag Libraries Users List
Subject: Re: JSTL 1.0 problem with Bayern Ch 11 example...


On 8/3/05, Givler, Eric <[EMAIL PROTECTED]> wrote:
> I'm having a heck of a time trying to get the Bayern example from chapter 11 
> working, and I'm really not sure why....
> 

It looks like there's a bug in your container. I just tried out your
code on Resin 3.0.14, and everything works as expected.

--
Martin Cooper


> I created an enterNumber.jsp page:
> 
> <%@ page contentType="text/html;charset=windows-1252"%>
> <html>
>   <head>
>     <meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
>     <title>untitled</title>
>   </head>
>   <body>
>   <form action="parseNumberCarefully.jsp" method="post">
>   Enter your favorite number <input type="text" name="favorite"/>
>   <br/><input type="submit" name="submit" value="Submit"/>
>   </form>
>   </body>
> </html>
> 
> 
> I created an parseNumberCarefully.jsp page:
> 
> <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core"%>
> <%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt"%>
> 
> <html>
>   <head>
>     <title>parseNumberCarefully.jsp</title>
>   </head>
>   <body>
>     <p>You entered "<c:out value="${param.favorite}"/>"</p>
>     <c:catch var="parsingError">
>       <fmt:parseNumber var="fav" value="${param.favorite}"/>
>       <p>As far as I can tell, this corresponds to the number
>         <c:out value="${fav}"/>.
>       </p>
>       <p>If you multiply this number by 2 and add 1, you get
>         <c:out value="${fav * 2 + 1}"/>. I like that number better.
>       </p>
>     </c:catch>
>     <c:if test="${not empty parsingError}">
>        Sorry, this doesn&rsquo;t look like a number to me. Perhaps 
> you&rsquo;re in the wrong country?
>     </c:if>
>   </body>
> </html>
> 
> 
> If I run the first page, enter a valid#, then click [submit], I get correct 
> results.
> If I run the first page, enter an invalid # (i.e. abcd), then click [submit], 
> I get correct results.
> However, if I enter an invalid#, click [back], then enter a valid number, I 
> keep getting parse errors.  It's as if the <catch> keeps RECREATING the 
> parsingError exception on subsequent requests even though the data has 
> changed and is valid.
> 
> The reason I tried to do this simple example was that I was creating a 
> multi-record entry form, and trying to validate with JSTL.  When I did this, 
> as soon as the form would detect bad data, every record after it would be 
> considered "invalid data".  In these cases, I'd end up either clearing the 
> rest of the data, or it would retain the first "good data" and ovewrite all 
> subsequent records, or I'd get a stack trace.  I thought all of the code that 
> I was writing was "syntactically" correct, but it did not produce the results 
> that I wanted.
> 
> If parseNumberCarefully.jsp has an errorPage attribute defined, and you 
> remove the <c:catch> tag, and enter an invalid value, an error page is 
> displayed. Now, if you hit [back] to goto the entry page, and enter a valid 
> value, it works fine.
> 
> What am I missing?
> 
> I'd appreciate any assistance on this.
> 
> I'm running this against Oc4J (oracle jdeveloper's embedded server) for 
> Jdeveloper 10g, version 10.1.2, on a Windows 2000 box.
> 
> 
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