'urlManager'=>array(
    'urlFormat'=>'path',
    'showScriptName' => false,
    'rules'=>array(
          '/page.html' => 'module1/controller1/action1',
    ),
),

$this->_pathInfo=trim($pathInfo,'/');

class CustomUrlManager extends CUrlManager
{
    public function parseUrl($request)
    {
        $pathInfo = $request->getRequestUri();
        if (strpos($pathInfo, '//') !== false)
            throw new CHttpException(404, Yii::t('yii', 'Unable to resolve the request "{route}".',
                array('{route}' => $pathInfo)));
        return parent::parseUrl($request);
    }
}

'urlManager'=>array(
    'urlFormat'=>'path',
    'showScriptName' => false,
    'rules'=>array(
          '/+page.html' => 'module1/controller1/action1',
    ),
),