/**
  * @return \ReflectionClass
  */
 public static function shareClassReflection($sClassName)
 {
     if (!($aRef = Object::flyweight($sClassName, false, 'ReflectionClass'))) {
         /*if( !class_exists($sClassName,true) )
         		{
         			throw new Exception("ShareObjectSerializer 在序列化时遇到无法加载的类:%s",$sClassName) ;
         		}*/
         $aRef = new \ReflectionClass($sClassName);
         Object::setFlyweight($aRef, $sClassName, 'ReflectionClass');
     }
     return $aRef;
 }