From b2f72644e0b5a8248ef02bb96886ad65136f99f2 Mon Sep 17 00:00:00 2001
From: none <none>
Date: Mon, 27 Mar 2023 14:28:08 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E5=8D=87=E7=B3=BB=E7=BB=9F=E7=A8=B3?=
 =?UTF-8?q?=E5=AE=9A=E6=80=A7?=
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---
 .../xyz/playedu/api/service/impl/CourseServiceImpl.java     | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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 d153bd3..0c25819 100644
--- a/src/main/java/xyz/playedu/api/service/impl/CourseServiceImpl.java
+++ b/src/main/java/xyz/playedu/api/service/impl/CourseServiceImpl.java
@@ -175,7 +175,11 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
 
     @Override
     public List<Course> getDepCoursesAndShow(List<Integer> depIds) {
-        return list(query().getWrapper().in("id", courseDepartmentService.getCourseIdsByDepIds(depIds)).eq("is_show", 1));
+        List<Integer> courseIds = courseDepartmentService.getCourseIdsByDepIds(depIds);
+        if (courseIds == null || courseIds.size() == 0) {
+            return new ArrayList<>();
+        }
+        return list(query().getWrapper().in("id", courseIds).eq("is_show", 1));
     }
 
     @Override