/**
*初始化语言包
*/
public static function initLang()
{
$langFilePath = LANG_PATH . Request::getAcceptLang() . '.php';
if (file_exists($langFilePath)) {
self::$APPLang = (include $langFilePath);
} elseif (file_exists(LANG_PATH . DEFAULT_LANG . '.php')) {
self::$APPLang = (include LANG_PATH . DEFAULT_LANG . '.php');
} else {
self::$APPLang = array();
}
}