Mybatis Plus Wrapper查询某几列的方法实现

@Service
public class UserService {
    @Autowired
    private UserMapper userMapper;

    public List<User> selectColumns(Wrapper<User> wrapper) {
        return userMapper.selectList(wrapper);
    }
}

Wrapper<User> wrapper = new QueryWrapper<>();
wrapper.select("name", "age");
List<User> users = userService.selectColumns(wrapper);

Wrapper<User> wrapper = new QueryWrapper<>();
wrapper.select(User.class, i->!i.getColumn().equals("id"));
List<User> users = userService.selectColumns(wrapper);

@Test
  public void selectByWrapper1() {
  QueryWrapper<User> queryWrapper = new QueryWrapper<>();
  queryWrapper.select("name", "phone").eq("age",25);
  List<User> users = userMapper.selectList(queryWrapper);
  users.forEach(System.out::println);
 }

 @Test
 public void selectByWrapper2() {
 QueryWrapper<User> queryWrapper = new QueryWrapper<>();
 queryWrapper.select(User.class, info -> !info.getColumn().equals("age")
 && !info.getColumn().equals("address")).eq("name","jack");
 List<User> users = userMapper.selectList(queryWrapper);
 users.forEach(System.out::println);
}