/**
* 设置实例名字
* @param string $registryClassName
*/
public static function setClassName($registryClassName = 'Cemvc_App_Register')
{
if (self::$_registry !== null) {
throw new Exception('Registry is already initialized');
}
if (!is_string($registryClassName) || !$registryClassName) {
throw new Exception("Argument is not a class name");
}
self::$_registryClassName = $registryClassName;
}