1、陪练课调整

2、付费陪练课

mec-biz/src/main/java/com/ym/mec/biz/service/impl/PracticeGroupServiceImpl.java

@@ -3172,7 +3172,7 @@ public class PracticeGroupServiceImpl extends BaseServiceImpl<Long, PracticeGrou
             throw new BizException("该订单已经支付成功，请勿重复购买");
         }
 
-        StudentPaymentOrder latestOrder=userGroupOrders.stream().max(Comparator.comparing(StudentPaymentOrder::getCreateTime)).get();
+        StudentPaymentOrder latestOrder=userGroupOrders.stream().max(Comparator.comparing(StudentPaymentOrder::getId)).get();
         StudentPaymentOrder newOrder = new StudentPaymentOrder();
         BeanUtils.copyProperties(latestOrder,newOrder);
         newOrder.setId(null);