Dynamic key in bean:message

Question

hi,
i would like to use a <bean:message> in my page but with a dynamic key:
<logic:iterate id="vSendMode" name="SvGetCommandRavelForm" property="recSendModeList">
<bean:message key="sendMode.agence${vSendMode.idSmod} .modeead${vSendMode.idAgency}" />
</logic:iterate>
only it tells me that the key sendMode.agence${vSendMode.idSmod} .modeead${vSendMode.idAgency} doesn't exist. which is true but for example sendMode.agence0 .modeead0 exists...
how can i do that ?
thanks :-)

Answer 1

Yes you can use runtime expressions with the bean:message tag.
However your container has to recognise the ${expr} as a runtime expression.
1 - You need a JSP2.0 container (eg Tomcat 5)
2 - your web.xml file needs to declare itself as version 2.4
ie:<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version="2.4">
...If you just put ${vSendMod.idSmod} on the page does it print the appropriate value?
If EL is working, then try this:
<c:set var="myKey" value="sendMode.agence${vSendMode.idSmod} .modeead${vSendMode.idAgency}" />
<bean:message key="${myKey}"/>
If you only have a JSP1.2 container, take a look at the struts-el taglib, or use a <%= expr %> instead of EL.
Cheers,
evnafets