From c66043331c7fde990ee5243ba53d9e82d23b6eb3 Mon Sep 17 00:00:00 2001
From: none <none>
Date: Wed, 22 Mar 2023 09:41:55 +0800
Subject: [PATCH] =?UTF-8?q?fixed:=20=E7=BA=BF=E4=B8=8A=E8=AF=BE=E5=88=97?=
 =?UTF-8?q?=E8=A1=A8=E7=A9=BA=E6=95=B0=E6=8D=AE=E6=8A=A5=E9=94=99?=
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---
 .../xyz/playedu/api/service/impl/CourseServiceImpl.java     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/java/xyz/playedu/api/service/impl/CourseServiceImpl.java b/src/main/java/xyz/playedu/api/service/impl/CourseServiceImpl.java
index 1cd6012..f18300a 100644
--- a/src/main/java/xyz/playedu/api/service/impl/CourseServiceImpl.java
+++ b/src/main/java/xyz/playedu/api/service/impl/CourseServiceImpl.java
@@ -181,6 +181,9 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
 
     @Override
     public Map<Integer, List<Integer>> getCategoryIdsGroup(List<Integer> courseIds) {
+        if (courseIds == null || courseIds.size() == 0) {
+            return null;
+        }
         Map<Integer, List<ResourceCourseCategory>> data = courseCategoryService
                 .list(courseCategoryService.query().getWrapper().in("course_id", courseIds))
                 .stream()
@@ -194,6 +197,9 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
 
     @Override
     public Map<Integer, List<Integer>> getDepIdsGroup(List<Integer> courseIds) {
+        if (courseIds == null || courseIds.size() == 0) {
+            return null;
+        }
         Map<Integer, List<CourseDepartment>> data = courseDepartmentService
                 .list(courseDepartmentService.query().getWrapper().in("course_id", courseIds))
                 .stream()