bug fix

src/main/java/com/peanut/modules/book/controller/BuyOrderController.java

@@ -107,6 +107,12 @@ public class BuyOrderController {
         return R.ok().put("result", page);
     }
 
+    /**
+     * 订单详情
+     *
+     * @param orderSn 订单号
+     * @return R
+     */
     @RequestMapping(path = "/orderDetail", method = RequestMethod.GET)
     public R orderDetail(@RequestParam("orderSn") String orderSn) {
         BuyOrderResponseVo buyOrderResponseVo = buyOrderService.orderDetail(orderSn);