控制器：
protected function _initialize()
{
$config = api('Config/lists');
C($config);
//var_dump($config);die;
$conf = M('config');
$list = $conf->getField('name,value');
//var_dump($list);die;

$this->baseUrl = baseUrl();
$this->webname = $list['WEB_SITE_NAME'];
$this->title = $list['WEB_SITE_title'];
$this->keyword = $list['WEB_SITE_KEYWORD'];
$this->description = $list['WEB_SITE_DEscriptION'];
$this->tontji = $list['WEB_SITE_TONGJI'];
$this->assign('webname', $this->webname);
$this->assign('title', $this->title);
$this->assign('keyword', $this->keyword);
$this->assign('description', $this->description);
$this->assign('tontji', $this->tontji);
$this->assign('baseUrl', $this->baseUrl);
$this->assign('WEB_SITE_AD_TOP1_PIC', C('WEB_SITE_AD_TOP1_PIC'));
$this->assign('WEB_SITE_AD_TOP2_PIC', C('WEB_SITE_AD_TOP2_PIC'));
$this->assign('WEB_SITE_AD_TOP3_PIC', C('WEB_SITE_AD_TOP3_PIC'));
$this->assign('WEB_SITE_AD_TOP4_PIC', C('WEB_SITE_AD_TOP4_PIC'));
if (C('WEB_SITE_CLOSE')) {
$this->error('站点已经关闭，请稍后访问~');
}
}

模板中
<title>{$title}</title>
<meta name="keywords" content="{$keyword}" />
<meta name="description" content="{$description}" />
<meta http-equiv="X-UA-Compatible" content="IE=7">
<base href="{$baseUrl}"/>
<link href="css/base.css" rel="stylesheet" />

{$title}{$keyword}{$description}这三个的变量都输不出来