private function __construct()
{
$this->appInfo =& getAppInfo();
self::$root = $this->appInfo->system['root'];
$this->result = array();
$this->system = $this->appInfo->system;
// TODO 载入默认语言的代码放在这里不太合适
$this->language = array();
$defaultLanguage = getConfig("language", "default");
if (!empty($defaultLanguage)) {
foreach (explode(",", $defaultLanguage) as $v) {
$this->loadLanguage($v);
}
}
}