The attribute urlBase on <m:message> is broken in two fundamental ways. First, the logic as to whether to use the urlBase doesn't make any sense at all, resulting in the urlBase never being used. The second problem is that EL value expressions in the urlBase are not getting resolved.

I am proposing a strategy as part of this fix. If the urlBase is used, it is taken verbatim, without appending the current context path. The reason is, if urlBase is overridden, it may be because it is pointing to a completely different application. If the developer want to reuse the context path, the expression #

must be included in the urlBase attribute.