BeanValidatorHolder.validate(bean) // HibernateValidator一般系统只有一个
CacheHolder.get("key") //如Memcached,应用系统也只有一个对象
ApplicationContextHolder.getBean("userInfoService");

<bean class="cn.org.rapid_framework.util.holder.CacheHolder">
    <property name="cache" ref="memcacheCacheImpl"/>
</bean>

CacheHolder.add("key","cache_value","1h");
//do something

public class CacheHolder implements InitializingBean{
    private static Cache cache;

    public void afterPropertiesSet() throws Exception {
        if(cache == null) throw new IllegalStateException("not found 'cache' for CacheHolder ");
    }
       
    public void setCache(Cache c) {
        if(cache != null) throw new IllegalStateException("CacheHolder already holded 'cache'");
        cache = c;
    }

    public static Cache getCache(){
        return cache;
    }

//省略了其它N多cache静态方法
    public static void add(String key, Object value, String expiration) {
        cache.add(key, value, parseDuration(expiration));
    }

    public static void cleanHolder() {
        cache = null;
    }       
}