LambdaQueryWrapper的or用法_lambdaquerywrapper or用法

LambdaQueryWrapper<CourseBase> queryWrapper =new LambdaQueryWrapper<>();

//如果传了创建角色为教务主任，就把创建角色为教务主任的也加进去
if (StringUtils.isNotBlank(courseBaseQueryDto.getCreateRole())) {
    queryWrapper.and(wrapper -> wrapper.eq(CourseBase::getStudentAdminId ,courseBaseQueryDto.getStudentAdminId()).or()
    .eq(CourseBase::getCreateRole ,courseBaseQueryDto.getCreateRole()));
}else {
    queryWrapper.eq(CourseBase::getStudentAdminId ,courseBaseQueryDto.getStudentAdminId());
}