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JSTL Conditional

Alan Hermin
Ranch Hand

Joined: Feb 16, 2006
Posts: 290
Hi all........
i am working with JSP 1.2
i have request attribute that get either "0" or "1" as Strings...
and i have JSTL c:when like this:




Then...how can i make the test attribute if when tag works successfully..???
remember:i am working with JSP 1.2..


Thnx
[ July 18, 2006: Message edited by: Ala'a Hendi ]
Stefan Evans
Bartender

Joined: Jul 06, 2005
Posts: 1018
Ok, couple of things.
Request attributes are always objects.
You say it is a string, so you need to do a string comparision: use the .equals() method.

<c:when test='<%= request.getAttribute("myAtt").equals("1) %>'>
...
</c:when>

Second thing - why are you using <%= expr %> with JSTL tags?
YOu are losing the power of the expression language.
Using an EL expression, it becomes much simpler:

<c:when test="${requestScope.myAtt == 1}">
...
</c:when>

Much easier to read don't you think?
Gregg Bolinger
GenRocket Founder
Ranch Hand

Joined: Jul 11, 2001
Posts: 15299
    
    6

He's using expressions because he is using JSP 1.2 and not 2.0.


GenRocket - Experts at Building Test Data
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61092
    
  66

Originally posted by Gregg Bolinger:
He's using expressions because he is using JSP 1.2 and not 2.0.


Still not necessary. The EL was introduced with the JSTL 1.0 for JSP 1.2. There's no reason to be using scriplets as attributes to the JSTL tags for this type of access.

Of course, in JSP 1.2 the EL is confined to the JSTL actions.
[ July 18, 2006: Message edited by: Bear Bibeault ]

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