YII引入css,js等文件

在试图文件下面，

Yii::app()->getClientScript()->registerCssFile("https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css");

Yii::app()->getClientScript()->registerCssFile("https://cdnjs.cloudflare.com/ajax/libs/jquery-confirm/3.3.2/jquery-confirm.min.css");

Yii::app()->getClientScript()->registerScriptFile("https://cdnjs.cloudflare.com/ajax/libs/jquery-confirm/3.3.2/jquery-confirm.min.js");