Injection in custom validator
jsf-2, validation
Solution
As to why it doesn't work that way, see this answer: How to inject in @FacesValidator with @EJB, @PersistenceContext, @Inject, @Autowired. In a nutshell, annotate it `@Named` instead of `@FacesValidator` and reference it in `<h:inputXxx validator>` or `<f:validator binding>` as `#{birthdateValidator}` instead. The problem is caused by an oversight by JSF/CDI guys. This is fixed in upcoming JSF 2.2.
Ok since I only need to access the message bundle, how would I access it without injection?
Evaluate it programmatically using `Application#evaluateExpressionGet()`:
ResourceBundle msg = context.getApplication().evaluateExpressionGet(context, "#{msg}", ResourceBundle.class);
// ...
You can even pick a specific key:
String msg = context.getApplication().evaluateExpressionGet(context, "#{msg.key}", String.class);
// ...
See also:
- Read resource bundle properties in a managed bean
Problem
Possible Duplicate: Dependency injection in FacesValidator (JSF Validation) Maybe, I'm missing something basic - but can't I use injection in a custom validator class in order to use the message resources? The following code gives me a null on `msg`, so injection obviously does not work, but why? And if it's not possible, how can I access the message resources? All examples I found so far, use hard coded text in validator messages which is not very useful for localization. ``` public class BirthdateValidator implements Validator { @Inject private transient ResourceBundle msg; @Override public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException { if ( [some validation fails] ) { FacesMessage message = new FacesMessage(msg.getString("validator.birthday")); message.setSeverity(FacesMessage.SEVERITY_ERROR); } } } ```