yii2中带有参数返回值404的操作

namespace app\components\exceptions;

use yii\web\NotFoundHttpException;

class CustomNotFoundException extends NotFoundHttpException
{
    public $message = 'The requested page does not exist.';
}

namespace app\controllers;

use app\components\exceptions\CustomNotFoundException;
use yii\web\Controller;

class SiteController extends Controller
{
    public function actionError()
    {
        throw new CustomNotFoundException(['param1' => 'value1', 'param2' => 'value2']);
    }
}

use app\components\exceptions\CustomNotFoundException;
use yii\web\View;

/* @var $exception CustomNotFoundException */
/* @var $this View */

$this->title = 'Page Not Found';
$this->params['breadcrumbs'][] = $this->title;
echo 'The requested page does not exist. Parameters: ';
foreach ($exception->getParams() as $key => $value) {
    echo "$key: $value, ";
}