ClassUtils.java 文件源码

public static boolean isAnnotationPresent(Class<?> clazz, Class<? extends Annotation> a) {
    for (Class<?> c = clazz; c != null; c = c.getSuperclass()) {
        if (c.isAnnotationPresent(a))
            return true;
        if(isAnnotationPresentOnInterfaces(c, a))
            return true;
    }
    return false;
}