如何读取读取分布式路径下的文件

readFile(): void {
    this.appendix.forEach((item: AppendixBean) => {
      let filePath: string = this.distributedPath + item.fileName;
      let savePath: string = getContext().filesDir + '/' + item.fileName;
      try {
        while (fileIo.accessSync(filePath)) {
          let saveFile = fileIo.openSync(savePath, fileIo.OpenMode.READ_WRITE | fileIo.OpenMode.CREATE);
          let file = fileIo.openSync(filePath, fileIo.OpenMode.READ_WRITE);
          let buf: ArrayBuffer = new ArrayBuffer(CommonConstants.FILE_BUFFER_SIZE);
          let readSize = 0;
          let readLen = fileIo.readSync(file.fd, buf, { offset: readSize });
          while (readLen > 0) {
            readSize += readLen;
            fileIo.writeSync(saveFile.fd, buf);
            readLen = fileIo.readSync(file.fd, buf, { offset: readSize });
          }
          fileIo.closeSync(file);
          fileIo.closeSync(saveFile);
          break;
        }
      } catch (error) {
        let err: BusinessError = error as BusinessError;
        Logger.error(`DocumentViewPicker failed with err: ${JSON.stringify(err)}`);
      }
    });
  }