后臺控制器是專門給后臺用的，只有加入后臺管理員角色才能訪問對應的接口，而前臺控制器是對外開放的專門給前端程序對接的接口，比如APP/小程序/網站等。 以文章分類為例，我們應該在/application/cms/controller目錄下建立Cate.php控制器文件，內容如下：  ``` <?php /** * +---------------------------------------------------------------------- * | UniAdmin?[?漸進式模塊化通用后臺?] * +---------------------------------------------------------------------- * | Copyright (c) 2018-2020 http://uniadmin.jiangruyi.com All rights reserved. * +---------------------------------------------------------------------- * | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) * +---------------------------------------------------------------------- * | Author: jry <ijry@qq.com> * +---------------------------------------------------------------------- */ namespace app\cms\controller; use think\Db; use think\Request; use app\core\controller\common\Home; use \Firebase\JWT\JWT; //導入JWT /** * 文章分類控制器 * * @author jry <ijry@qq.com> */ class Cate extends Home { private $example_cate; protected function initialize() { parent::initialize(); $this->example_cate = new \app\example\model\Cate(); } /** * 獲取分類信息 * * @return \think\Response * @author jry <ijry@qq.com> */ public function info($id) { $ret = $this->is_login(); if($ret['code'] != 200){ return json($ret); } $user_info = $this->example_cate ->field('id,title,status') ->find($if); return json(['code' => 200, 'msg' => '分類信息', 'data' => ['info' => $info]]); } } ```