Using I18n in the login page

[valentim]

Hi folks,

I would like to show messages personalized with UsernameNotFoundException in my login page 8)

<%
((AuthenticationException) session.getAttribute(AbstractProcessingFilter.ACEG I_SECURITY_LAST_EXCEPTION_KEY)).getMessage()
%>

but, all exception that is throwed in AuthenticationDao.loadUserByUsername

public UserDetails loadUserByUsername(String username)
throws UsernameNotFoundException, DataAccessException;

it is catched in DaoAuthenticationProvider.getUserFromBackend and substituted by BadCredentialsException

private UserDetails getUserFromBackend(String username) {
try {
return this.authenticationDao.loadUserByUsername(username );
} catch (UsernameNotFoundException notFound) {
throw new BadCredentialsException("Bad credentials presented");
} catch (DataAccessException repositoryProblem) {
throw new AuthenticationServiceException(repositoryProblem
.getMessage(), repositoryProblem);
}
}

How I can show my proper messages?

[Ben Alex]

In CVS HEAD DaoAuthenticationProvider version 1.24 was updated last week:

    private UserDetails getUserFromBackend(String username) {
        try {
            return this.authenticationDao.loadUserByUsername(username);
        } catch (UsernameNotFoundException notFound) {
            if (hideUserNotFoundExceptions) {
                throw new BadCredentialsException("Bad credentials presented");
            } else {
                throw notFound;
            }
        } catch (DataAccessException repositoryProblem) {
            throw new AuthenticationServiceException(repositoryProblem
                .getMessage(), repositoryProblem);
        }
    }

So your different exception is no longer "swallowed" if you set the hideUserNotFoundExceptions to false (it defaults to true).

[valentim]

Hello Ben,

Great solution :!:

Best Regards,