fix:订单查询修改

pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/controller/order/HardCarController.java

@@ -78,8 +78,11 @@ public class HardCarController {
     @GetMapping("/order-id")
     @Operation(summary = "根据订单id查询购物车")
     public R<Page<HardCarVo>> orderId(@ParameterObject Page page, @RequestParam Long orderId) {
+        if (ObjectUtil.isEmpty(orderId)) {
+            R.ok(null);
+        }
         HardOrderEntity order = hardOrderService.getById(orderId);
-        if (ObjectUtil.isEmpty(order)) return null;
+        if (ObjectUtil.isEmpty(order) || ObjectUtil.isEmpty(order.getParentCarId())) return null;
         HardCarDto dto = new HardCarDto();
         dto.setParentCarId(order.getParentCarId());
         return R.ok(hardCarService.pageJoin(page, dto));