There is no direct way to access constants in the EL. Here are a few alternatives:
1. Create a Map in the application scope and put all the constants in
there. (e.g. ${myConstantsMap.SOME_CONST})2. Create a bean that implements java.util.Map and have it look up
constants (e.g. ${constantsBean.MyConstants.SOME_CONST} would call
constantsBean.get( "MyConstants" ). This would return a Map containing
key/value pairs for the costants in MyConstants). This is not hard to
write and could be done using introspection.3. Create a function that looks up the constants (e.g. ${fn:constants(
"MyConstants.SOME_CONST" )} ). Again, The function would use introspection.We're looking into making this easier in a future version of the JSP specification.
Hope this helps.
--- Mark Roth, Java Software JSP 2.0 Co-Specification Lead Sun Microsystems, Inc.
Karthik Arun wrote:
hi All
How can I use a Const (final static) member of a class MyConstants in JSTL?? I would like to do something like this:
<c:if test="${state == MyConstants.SOME_CONST}" > <c:set value="${stateCode + '<br><b>' + singleObjToProcess.stateStr + '</b><br>'}" var="stateCode" /> </c:if>
where SOME_CONST is a const in MyConstants class.state is a loop iterating variable, stateCode is some member variable of singleObjToProcess object that is in the page scope.
Can somebody let me know how I can use the constant in the JSTL..????
Regards, Arun Karthik R
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