[新增] 查看小组详情

course/api/Group-小组.md

@@ -79,3 +79,19 @@ get /
 ```
 
 see [GroupSerializer](../serializer/GroupSerializer.md)
+
+## 查看小组详情
+
+[STUDENT,TEACHER]
+
+```http
+get /:groupId
+```
+
+### Response
+
+```json
+{
+  "data": GroupSerializer
+}
+```