Question

Supposing that I have a variable that contains a dynamic label how can I achieve something like this (navigation is a request scope attribute):

<fmt:message  var='<c:out value="${navigation}"/>'/>

Or

<bean:message  var='<c:out value="${navigation}"/>'/>

Actually until now was handled like this :

<%
    String navigation = (String)request.getAttribute("navigation");
%>

<bean:message  var='navigation'/>

But this way of doing things was good ten years ago.

Answer 1

Something like:

<c:set var="temp"><c:out value="${navigation}"/></c:set>
<fmt:message var='${temp}'/>

Are you sure you mean to use var= and not key= using the var= attribute puts the value of the message in a variable named that value, and doesn’t output it to the response.

<c:set var="temp">something-complex-<c:out value="${navigation}"/></c:set>
<fmt:message key='${temp}'/>

Note this could also be written as:

<fmt:message key='something-complex-${navigation}'/>