/**
* 班级添加学生
*
* @param userId 学乐号
* @param classId 班级ID
*/
@Override
public int saveStudents(String userId, String classId) {
String[] userIds = userId.split(",");
String schoolId = classService.getSchoolId(classId);
MClass mClass = classMapper.selectByPrimaryKey(classId, schoolId);
int in = studentMapper.updateStudents(Arrays.asList(userIds), mClass);
// 学生换班，删除该家长的缓存信息
deleteRedisOfParent(Arrays.asList(userIds), schoolId);
return in;
}
