/** * 登录 */ public function login() { try { if (IS_POST) { $user = new UserModel(); $user->login(I('username'), I('password')); $callback = session('callback'); $this->success('登录成功', empty($callback) ? U('/') : $callback); } else { $this->display(); } } catch (Exception $e) { $this->error($e->getMessage()); } }