shiro自定义异常无法被捕获总是抛出AuthenticationException解决方案

　　这个问题我也是出的莫名其妙，刚开始好好的，然后配置多realm之后出的。

　　现在直入主题

　　在继承了 org.apache.shiro.authc.pam.ModularRealmAuthenticator的类中重写doMultiRealmAuthentication方法

　　以下是重写的代码，判断是否存在异常。如果存在异常，则抛出。

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;
    }
}

　　关键点在于

　　　　if(authenticationException != null){
            throw authenticationException;
        }

　
有可能出现的问题。。。
可能会出现第二个realm会出现第一个realm的抛出的异常。楼主直接在subject.login(token);try处理了。。
如果想在第二个realm里throw new ，别抛出RuntimeException这个就行。。。

try {
    subject.login(token);
}catch (LoginPhoneException e){
    Map map = new HashMap();
    map.put("code", CodeAndMsgEnum.INFO.getCode());
    return map;
}catch (RuntimeException e){
    System.out.println("出现了这个异常。。。但是不管他，因为我也不知道怎么处理");
}

瞎搞一通，总之解决了问题，但是个人觉得有点不理想，算了，希望可以找到更好的解决方法。