EL expressions and string concatenation 2007-11-04 - By Adam Hardy
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Antonio Petrelli on 04/11/07 16:17, wrote:
> 2007/11/4, Adam Hardy <ahardy.struts@(protected)>:
>> I want to concatenate 2 vars into a string in EL but since one is a Long, EL
>> can't do it, and throws a NumberFormatException because it wants them both
to be
>> Longs so it can do arithmetic addition instead.
>
> You could set a string variable this way:
> <c:set var="myStringVariable"><c:out value="${category.id}"/></c:set>
That's not quite the minimalist approach I was thinking of, but it is one
approach.
Another approach which saves that whole line is to write another taglib
function
and use it like this:
<a href="${pc:url(pc:concat('/category/edit.html?id=', category.id))}">
where pc: is my taglibrary, but I'd like to avoid a proliferation of these
taglib functions in my app.
regards
Adam
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