Re: Detrmining which module from within JSP

[Craig McClanahan]

Kunal H. Parikh wrote:

Hi All!

Craig's suggestion works great!

However, it appears to me that dot delimited request variable names don't
work with the JSTL.
Eg:
<c:out value="${org.apache.struts.action.MODULE}" />
<c:out value="${requestScope.org.apache.struts.action.MODULE}" />
The above prints nothing and therefore a .prefix also fails.

Does anyone know if this is a JSTL bug, or is there something that needs to
change in struts?
Or is there something I am doing incorrectly?

 

This isn't a bug, it's a feature :-).  Actually, this happens because 
the "." character is an operator in the EL syntax, so it can't be used 
literally in an expression.  Try something like this:

 The prefix is <c:out 
value="${requestScope['org.apache.struts.action.Module'].prefix}"/>

instead.  This works because the "." operator and the "[...]" bracket 
syntax are treated identically in the EL syntax, just as they are in 
JavaScript.  Therefore, you have to enclose the string constant that 
includes periods in quotes to make things work as you expect.

TIA,

Kunal

 

Craig

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