shiro自定义异常无法被捕获总是抛出Authenticati…

public class MyModularRealmAuthenticator extends ModularRealmAuthenticator {

    private static final Logger log = LoggerFactory.getLogger(ModularRealmAuthenticator.class);

    @Override
    protected AuthenticationInfo doMultiRealmAuthentication(Collection<Realm> realms, AuthenticationToken token) throws AuthenticationException {
        AuthenticationStrategy strategy = getAuthenticationStrategy();

        AuthenticationInfo aggregate = strategy.beforeAllAttempts(realms, token);

        if (log.isTraceEnabled()) {
            log.trace("Iterating through {} realms for PAM authentication", realms.size());
        }
        AuthenticationException authenticationException = null;
        for (Realm realm : realms) {

            aggregate = strategy.beforeAttempt(realm, token, aggregate);

            if (realm.supports(token)) {

                log.trace("Attempting to authenticate token [{}] using realm [{}]", token, realm);

                AuthenticationInfo info = null;
                try {
                    info = realm.getAuthenticationInfo(token);
                } catch (AuthenticationException e) {
                    authenticationException = e;
                    if (log.isDebugEnabled()) {
                        String msg = "Realm [" + realm + "] threw an exception during a multi-realm authentication attempt:";
                        log.debug(msg, e);
                    }
                }

                aggregate = strategy.afterAttempt(realm, token, info, aggregate, authenticationException);

            } else {
                log.debug("Realm [{}] does not support token {}.  Skipping realm.", realm, token);
            }
        }
        if(authenticationException != null){
            throw authenticationException;
        }
        aggregate = strategy.afterAllAttempts(token, aggregate);

        return aggregate;
    }
}