public function del($goods_id)
 {
     $goods_id = $goods_id + 0;
     $p = $_GET['p'] + 0;
     $goods_model = new \Model\GoodsModel();
     if ($goods_model->delete($goods_id) !== false) {
         $this->redirect('showlist', array('p' => $p), 1, '删除成功...');
     } else {
         $this->redirect('showlist', array('p' => $p), 2, '删除失败...');
     }
 }