1、修复bug

web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeSchoolClassService.java

@@ -2,6 +2,7 @@ package com.ibeetl.jlw.service;
 
 import cn.hutool.core.collection.CollectionUtil;
 import cn.hutool.core.lang.Assert;
+import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.json.JSONUtil;
 import cn.jlw.util.ToolUtils;
 import com.alibaba.fastjson.JSON;
@@ -11,6 +12,7 @@ import com.ibeetl.admin.core.service.CoreBaseService;
 import com.ibeetl.admin.core.util.PlatformException;
 import com.ibeetl.admin.core.web.JsonResult;
 import com.ibeetl.admin.core.web.JsonReturnCode;
+import com.ibeetl.jlw.dao.StudentDao;
 import com.ibeetl.jlw.dao.TeacherOpenCourseMergeSchoolClassDao;
 import com.ibeetl.jlw.dao.TeacherOpenCourseMergeStudentDao;
 import com.ibeetl.jlw.entity.Student;
@@ -53,6 +55,9 @@ public class TeacherOpenCourseMergeSchoolClassService extends CoreBaseService<Te
     @Autowired
     private StudentService studentService;
 
+    @Autowired
+    private StudentDao studentDao;
+
     public PageQuery<TeacherOpenCourseMergeSchoolClass>queryByCondition(PageQuery query){
         PageQuery ret =  teacherOpenCourseMergeSchoolClassDao.queryByCondition(query);
         queryListAfter(ret.getList());
@@ -282,8 +287,19 @@ public class TeacherOpenCourseMergeSchoolClassService extends CoreBaseService<Te
                     return false;
                 });
 
+                List<TeacherOpenCourseMergeStudent> collect = new ArrayList<>();
+
+                for (TeacherOpenCourseMergeStudent teacherOpenCourseMergeStudent : studentDelList) {
+                    Student student = studentDao.getById(teacherOpenCourseMergeStudent.getStudentId());
+                    if (ObjectUtil.isNotEmpty(student)) {
+                        if (classIds.contains(student.getClassId().toString())) {
+                            collect.add(teacherOpenCourseMergeStudent);
+                        }
+                    }
+                }
+
                 // 获取关联表要删除的主键Ids
-                String idsDelAdString = CollectionUtil.emptyIfNull(studentDelList).stream().map(
+                String idsDelAdString = CollectionUtil.emptyIfNull(collect).stream().map(
                         o -> o.getTeacherOpenCourseSchoolClassMergeStudentId().toString()).collect(joining(","));
                 // 删除 班级方式加入的学生
                 teacherOpenCourseMergeStudentDao.deleteByIds(idsDelAdString);