Do JSP support runtime string substitution for resource bundle text?

Question

In the resource bundle properties file I have following text

system.invalidID = This accountID $ is not valid for current session.

I want to replace dynamically $(this will be the actual ID at runtime) from the above resource text in my JSP and java Class.

Can we do this in JSP and java?

Answer 1

You can actually create a simple class with a method something like

public class ResourceBundleHelper{

    public String resolveMessage(String key){
     //code
    }

} 

and then create instance of this class and put it to ServletContext and then from jsp el

${resourceBundleHelper.resolveMessage(YOUR_VARIABLE)}

Answer 2

You can parameterize messages using JSTL's <fmt:message> and <fmt:param> tags together.

The basename attribute below refers to the base name of your ResourceBundle property files, which must be accessible on the webapp's classpath. Putting everything together looks like this:

<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<fmt:setBundle basename="com.y.app.Messages" var="bundle" />
<fmt:message bundle="${bundle}" key="system.invalidID">
  <fmt:param value="${attemptedID}" />
</fmt:message>

Answer 3

You could try the JSTL Core <fmt:bundle> Tag

see http://www.tutorialspoint.com/jsp/jstl_format_bundle_tag.htm