fix: correct

src/main/java/cn/seecoder/courselearning/service/coupon/CouponQueryOrderService.java

@@ -0,0 +1,8 @@
+package cn.seecoder.courselearning.service.coupon;
+
+import cn.seecoder.courselearning.po.order.CourseOrder;
+
+public interface CouponQueryOrderService {
+
+    CourseOrder getByPrimaryKey(Integer orderId);
+}

src/main/java/cn/seecoder/courselearning/service/course/CourseQueryOrderService.java

@@ -0,0 +1,9 @@
+package cn.seecoder.courselearning.service.course;
+
+import cn.seecoder.courselearning.po.order.CourseOrder;
+
+public interface CourseQueryOrderService {
+    CourseOrder queryMostRecentOrder(Integer uid, Integer courseId);
+
+    CourseOrder getByPrimaryKey(Integer orderId);
+}