public function bookBuyAction()
 {
     if (!$this->thisController->id) {
         return $this->thisController->displayAjax(false, '参数有误');
     }
     $book_info = self::$service->getBook($this->thisController->id);
     if (!$book_info) {
         return $this->thisController->displayAjax(false, '参数有误');
     }
     if (IS_POST) {
         $form = BaseForm::getForm('BookOrderForm');
         if (!$form->isValid($this->thisController->request->getPost())) {
             foreach ($form->getMessages() as $message) {
                 return $this->thisController->displayAjax(false, $message->getMessage());
             }
         }
         //写入数据
         $data = $this->thisController->request->getPost();
         $data['number'] = st_order_number();
         $data['book_id'] = $this->thisController->id;
         if ($book_info->getPrice() <= 0) {
             $data['pay_status'] = 2;
             $data['status'] = 3;
             //已支付
         } else {
             $data['pay_status'] = 1;
             $data['status'] = 4;
             //未支付
         }
         $data['price'] = $book_info->getPrice();
         $data['good_id'] = 0;
         $data['credit'] = 0;
         $data['uid'] = $this->thisController->user->id;
         $result = self::$service->insertCommon($data, 'Order');
         return $this->thisController->ajax($result);
     }
 }