@Override

    public Result findUserPage(PageParam pageParam) {

        Page<SysUser> page = new Page<>(pageParam.getPageNum(), pageParam.getPageSize());

        LambdaQueryWrapper<SysUser> wrapper = new LambdaQueryWrapper<>();

        if (pageParam.getAddress()!=null){

            wrapper.like(SysUser::getAddress,pageParam.getAddress());

        }

        if (pageParam.getUsername()!=null){

            wrapper.like(SysUser::getUsername,pageParam.getUsername());

        }

        if (pageParam.getEmail()!=null) {

            wrapper.like(SysUser::getEmail,pageParam.getEmail());

        }

        wrapper.orderByAsc(SysUser::getId);

        System.err.println("==================================");

        Page<SysUser> sysUserPage = sysUserMapper.selectPage(page, wrapper);

        System.err.println("==================================");

        sysUserPage.getRecords().forEach(System.out::println);

        System.err.println("==================================");

        List<SysUser> list = sysUserPage.getRecords();

        return Result.success(sysUserPage);

    }

}