HarmonyOS 鸿蒙Next 相册选的图片 用fs读不到信息 报错13900002

13900002错误是"没有这个文件或目录"

参考以下代码

async getFileInfo(filePathString: string) {
  try {
    let uri = fileUri.getUriFromPath(filePathString)
    let fileUriObject = new fileUri.FileUri(uri);
    let filename = fileUriObject.name
    let phAccessHelper = photoAccessHelper.getPhotoAccessHelper(this.context);
    let predicates: dataSharePredicates.DataSharePredicates = new dataSharePredicates.DataSharePredicates();
    // 配置查询条件，使用PhotoViewPicker选择图片返回的uri进行查询
    predicates.equalTo('uri', filePathString)
    let fetchOption: photoAccessHelper.FetchOptions = {
      fetchColumns: [],
      predicates: predicates
    };
    let fetchResult: photoAccessHelper.FetchResult<photoAccessHelper.PhotoAsset> = await phAccessHelper.getAssets(fetchOption)
    // 得到uri对应的PhotoAsset对象，读取文件的部分信息
    const asset: photoAccessHelper.PhotoAsset = await fetchResult.getFirstObject();
    let logString = `filename：${filename} fileSize：${asset.get(photoAccessHelper.PhotoKeys.SIZE)}`
    console.log(logString)
    let resFile = fs.openSync(filePathString, fs.OpenMode.READ_ONLY)
    console.log('文件信息：' + 'fd:' + resFile.fd + '; ' + 'path:' + resFile.path + '; ' + 'name:' + resFile.name);
  } catch (e) {
    console.error(e)
  }
}