肖海南查老师所教的学生方法修改

5 months ago · ce9cc31736
parent d1da72ad1a
commit ce9cc31736
1 changed files with 3 additions and 1 deletions
--- a/src/main/java/com/teaching/backend/service/impl/courses/CoursesServiceImpl.java
+++ b/src/main/java/com/teaching/backend/service/impl/courses/CoursesServiceImpl.java
@ -417,7 +417,9 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
                List<StudentCourses> studentUsernames = studentCoursesMapper.selectBatchSomeStudent(courseId);
                for (StudentCourses studentUsername : studentUsernames) {
                    UmsStudentManage umsStudentManage = umsStudentManageMapper.queryStudent(String.valueOf(studentUsername.getStudent()));
-                    umsStudentManageList.add(umsStudentManage);
+                    if (umsStudentManage != null){
+                        umsStudentManageList.add(umsStudentManage);
+                    }
                }
            }
            return umsStudentManageList;