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Scriptlet vs JSTL

 
Tom Henricksen
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I have set this up on Tomcat 5.0.28 with JSTL 1.0. I have a servlet that puts a List into session then calls a JSP


The JSP pulls it out and iterates through it.
If I run this JSTL JSP it works good:


But if I use JSP with a scriptlet this doesn't find the List


You make ask why am I doing this. I am trying to debug something else. Am I doing something wrong with scope?
Thanks in advance,
Tom

[ December 14, 2005: Message edited by: Tom Henricksen ]
[ December 14, 2005: Message edited by: Tom Henricksen ]
 
Bear Bibeault
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With Tomcat 5 you should be using JSTL 1.1.
 
Bosun Bello
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In your scriptlet, you are trying to get the list from the request. But, in your servlet, you added the list to the session.
 
Stefan Evans
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>Am I doing something wrong with scope?
you put the attribute into session scope:
request.getSession().setAttribute("list",list);

and then try to retrieve it from request scope:
List list = (List)request.getAttribute("list");

Do you think that should be reason enough?

The reason JSTL works is that it uses the method pageContext.findAttribute("list") to search through page, request, session then application scopes (in that order) to find the appropriate attribute.

That is also why you were able to use ${list} as the name of both your "list" AND the temp variable you were using to iterate over the list.
Their fully qualified names would be ${pageScope.list} and ${sessionScope.list}. The first time you use ${list} it matched the list in session scope. After that it used the variable in the page scope.

Normally I would recommend that you you use different names for var and items - just to save confusion.
 
Tom Henricksen
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Thank you all very much! I appreciate your help with this.

Tom
 
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