Question

I need to have resource messages that contain EL expressions be resolved when loaded from a ResourceBundle. Basically I have a number of properties files containing the text. Some of the text will look like the following:

welcomeText=Welcome #{userbean.name}

The only possible way I can see this working currently is implementing a custom taglib so that instead of saying:

<f:loadBundle var="messages" basename="application.messages"/>

I would have to use

<mytaglib:loadBundle var="messages" basename="application.messages"/>
#{messages.welcomeText}

Given a user with username “User1”, this should output

Welcome User1

My implementation would then use a custom ResourceBundle class that would override handleGetObject, use the ELResolver to resolve variables etc….Ideas? suggestings? Implementations that are already available?

I appreciate your assistance.

Answer 1

Rather make use of <h:outputFormat> and <f:param> to display parameterized text. It’s backed by the MessageFormat API, the same rules as described in the API’s javadoc will be applied.

E.g.

welcomeText=Welcome {0}

with

<h:outputFormat value="#{messages.welcomeText}">
    <f:param value="#{userbean.name}" />
</h:outputFormat>

There it is for 🙂