How to inject in @FacesValidator with @EJB, @PersistenceContext, @Inject, @Autowired

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JSF 2.3+

If you’re already on JSF 2.3 or newer, and want to inject CDI-supported artifacts via e.g. @EJB, @PersistenceContext or @Inject, then simply add managed=true to the @FacesValidator annotation to make it CDI-managed.

@FacesValidator(value="emailExistValidator", managed=true)

JSF 2.2-

If you’re not on JSF 2.3 or newer yet, then you basically need to make it a managed bean. Use Spring’s @Component, CDI’s @Named or JSF’s @ManagedBean instead of @FacesValidator in order to make it a managed bean and thus eligible for dependency injection.

E.g., assuming that you want to use CDI’s @Named:

@Named
@ApplicationScoped
public class EmailExistValidator implements Validator {
    // ...
}

You also need to reference it as a managed bean by #{name} in EL instead of as a validator ID in hardcoded string. Thus, so

<h:inputText ... validator="#{emailExistValidator.validate}" />

instead of

<h:inputText ... validator="emailExistValidator" />

or

<f:validator binding="#{emailExistValidator}" />

instead of

<f:validator validatorId="emailExistValidator" />

For EJBs there’s a workaround by manually grabbing it from JNDI, see also Getting an @EJB in @FacesConverter and @FacesValidator.

If you happen to use JSF utility library OmniFaces, since version 1.6 it adds transparent support for using @Inject and @EJB in a @FacesValidator class without any additional configuration or annotations. See also the CDI @FacesValidator showcase example.

See also:

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