On Mon, 10 Feb 2003, Hunter Hillegas wrote:
> I have the following code:
>
> <%
> System.out.println("Start Page: " + startPage); //DEBUG
> System.out.println("End Page: " + endPage); //DEBUG
> %>
>
> <c:forEach begin="${startPage}" end="${endPage}">
> <%
> System.out.println("Looping..."); //DEBUG
> %>
> </c:forEach>
>
> When I run this code, I get the following values printed out for start and
> end:
>
> Start Page: 0
> End Page: 42
>
> But, the code only loops through one time, instead of looping all the times
> I would expect... Shouldn't it be counting up through all iterations between
> 0 and 42?
Nope. You are making a common mistake - assuming that scripting variables
and scoped attributes are the same thing.
The 'startPage' and 'endPage' variables that you are displaying using
System.out.println() are scripting variables. Scripting variables are not
visible to the regular JSTL tags - those tags obtain their attribute
values from scoped attributes (e.g. request or session attributes)
instead.
To have your loop behave correctly, you'll need to set startPage and
endPage as scoped attributes instead of scripting variables.
--
Martin Cooper
>
> If I replace the begin and end with 0 and 42 like this:
>
> <c:forEach begin="0" end="42">
> <%
> System.out.println("Looping..."); //DEBUG
> %>
> </c:forEach>
>
> Then it loops as I would expect.
>
> What am I doing wrong?
>
> Thanks,
> Hunter
>
>
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