Java Reference
In-Depth Information
ResourceBundle messages = (Re-
sourceBundle)session.getAttribute("messages");
Then it looks up the string associated with the key
person.lastName
as follows:
messages.getString("person.lastName");
You can only use a
message
or
messages
tag to display messages that are queued onto
a component as a result of a converter or validator being registered on the component. The
following example shows a
message
tag that displays the error message queued on the
userNo
input component if the validator registered on the component fails to validate
the value the user enters into the component.
<h:inputText id="userNo" value="#{UserNumberBean.userNumber}">
<f:validateLongRange minimum="0" maximum="10" />
...
<h:message
style="color: red;
text-decoration: overline" id="errors1" for="userNo"/>
For more information on using the
message
or
messages
tags, see “Displaying Error
Messages with the h:message and h:messages Tags” in
The Java EE 6 Tutorial: Basic
Concepts
.
Messages that are not queued on a component and are therefore not loaded automatically
are referenced using a value expression. You can reference a localized message from al-
most any JavaServer Faces tag attribute.
The value expression that references a message has the same notation whether you loaded
the resource bundle with the
f:loadBundle
tag or registered it with the
resource-
bundle
element in the configuration file.
The value expression notation is
var.message
, in which
var
matches the
var
attrib-
ute of the
f:loadBundle
tag or the
var
element defined in the
resource-bundle
element of the configuration file, and
message
matches the key of the message contained
in the resource bundle, referred to by the
var
attribute.
Here is an example from
editAddress.xhtml
in Duke's Tutoring:
<h:outputLabel for="country" value="#{bundle['address.country']}:"
/>
