Using FacesMessage to Create a Message
Using FacesMessage to Create a Message
The Object instance typically contains the substitution parameters that are embedded in the
message. For example, the custom validator described in
will substitute the format pattern for the {0} in this error message:
Input must match one of the following patterns {0}
gives an example of accessing messages.
Using FacesMessage to Create a Message
Instead of registering messages in the application configuration resource file, you can access the
ResourceBundle
directly from the code. The validateEmail method from the Coffee Break
example does this:
...
String message =
"";
...
message = CoffeeBreakBean.loadErrorMessage(context,
CoffeeBreakBean.CB_RESOURCE_BUNDLE_NAME,
"EMailError");
context.addMessage(toValidate.getClientId(context),
new FacesMessage(message));
...
These lines also call the loadErrorMessage to get the message from the ResourceBundle. Here
is the loadErrorMessage method from CoffeeBreakBean:
public static String loadErrorMessage(FacesContext context,
String basename, String key) {
if ( bundle == null ) {
try {
bundle = ResourceBundle.getBundle(basename,
context.getViewRoot().getLocale());
} catch (Exception e) {
return null;
}
}
return bundle.getString(key);
}
Performing Localization
The Java EE 5 Tutorial · September 2007
392
