troubleshooting Question

[JSTL] Using a parameter value as a another parameter's parameter name

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grexx asked on
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Take the following example. A page receives the following parameter (e.g. via a POST action): firstname=John, and uses that parameter as follows:

<c:set var="parametername" value="firstname"/>
<c:set var="parametervalue" value="${param.firstname}"/>

I wonder if it's possible to use the value of the variable parametername (firstname) in the value of parametervalue, so the result would be:

<c:set var="parametervalue" value="John"/>

The advantage would be that I only need to change the value of parametername.
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