import org.apache.shiro.realm.AuthenticatingRealm; //导入依赖的package包/类
@Override
protected void doStop() throws Exception {
  eventManager.unregister(this);

  configuration = null;

  // reset shiro caches
  Collection<Realm> realms = realmSecurityManager.getRealms();
  if (realms != null) {
    for (Realm realm : realms) {
      if (realm instanceof AuthenticatingRealm) {
        ((AuthenticatingRealm) realm).setAuthenticationCache(null);
      }
      if (realm instanceof AuthorizingRealm) {
        ((AuthorizingRealm) realm).setAuthorizationCache(null);
      }
    }
  }
}
 

import org.apache.shiro.realm.AuthenticatingRealm; //导入依赖的package包/类
/**
 * Looks up registered {@link AuthenticatingRealm}s, and clears their authc caches if they have it set.
 */
private void clearAuthcRealmCaches() {
  // NOTE: we don't need to iterate all the Sec Managers, they use the same Realms, so one is fine.
  Collection<Realm> realms = realmSecurityManager.getRealms();
  if (realms != null) {
    for (Realm realm : realms) {
      if (realm instanceof AuthenticatingRealm) {
        Cache cache = ((AuthenticatingRealm) realm).getAuthenticationCache();
        if (cache != null) {
          log.debug("Clearing cache: {}", cache);
          cache.clear();
        }
      }
    }
  }
}
 

import org.apache.shiro.realm.AuthenticatingRealm; //导入依赖的package包/类
public AuthenticatingRealm getDelegateAuthenticationRealm() {
    return delegateAuthenticationRealm;
}
 

import org.apache.shiro.realm.AuthenticatingRealm; //导入依赖的package包/类
public void setDelegateAuthenticationRealm(AuthenticatingRealm delegateRealm) {
    this.delegateAuthenticationRealm = delegateRealm;
}