修改学生添加程序，解决后续发流程报错问题

src/main/java/com/xjrsoft/module/student/service/impl/StudentManagerServiceImpl.java

@@ -180,7 +180,7 @@ public class StudentManagerServiceImpl extends MPJBaseServiceImpl<BaseStudentUse
     public Boolean update(UpdateBaseStudentUserDto dto) {
 
         BaseStudentUser baseStudentUser = BeanUtil.toBean(dto, BaseStudentUser.class);
-
+        baseStudentUser.setCode(dto.getUserName());
         studentbaseManagerBaseStudentUserMapper.updateById(baseStudentUser);
 
         //先删除再新增