见注释

private void buildSettingMap() throws SecurityException {
    settingMap = new HashMap<Class<?>, Method>();
    for (Method m1 : setting.getClass().getMethods()) {
        Class<?>[] pts = m1.getParameterTypes();
        if (pts.length == 1 && Castor.class.isAssignableFrom(pts[0])) {
            settingMap.put(pts[0], m1);
            //为啥不做 break ？
        }
    }
}
//在 fillmap 时取settingMap里的method为什么要双检索？
   Method m = settingMap.get(castor.getClass());
        if (null == m) {
            for (Entry<Class<?>, Method> entry : settingMap.entrySet()) {
                Class<?> cc = entry.getKey();
                if (cc.isAssignableFrom(klass)) {
                    m = settingMap.get(cc);
                    break;
                }
            }
        }
        if (null != m)
            m.invoke(setting, castor);