无法将文件从Google云端硬盘移至Blobstore

Question

我使用以下代码将文件从Google云端硬盘移动到blobstore。但现在不推荐使用FileWriteChannel，代码无效。这个问题有替代解决方案吗？

    private BlobKey getBlobKey(File f, DriveObject driveObject)
        throws IOException, MalformedURLException { 

    Drive service = ((GoogleDrive) driveObject).getService();

    byte[] buffer = new byte[(int) f.getFileSize().intValue()];
    GenericUrl url = new GenericUrl(f.getDownloadUrl());
    HttpResponse response = service.getRequestFactory()
                .buildGetRequest(url).execute();

    InputStream is = response.getContent();

    FileService fileService = FileServiceFactory.getFileService();
    AppEngineFile file = null;
    boolean lock = true;
    try {
        file = fileService.createNewBlobFile("application/zip");
        FileWriteChannel writeChannel = fileService.openWriteChannel(
                    file, lock);

        int len;
        while ((len = is.read(buffer)) >= 0) {
        ByteBuffer bb = ByteBuffer.wrap(buffer, 0, len);
        writeChannel.write(bb);
        }
        writeChannel.closeFinally();

    } catch (IOException e) {
            // TODO Auto-generated catch block
        e.printStackTrace();
    }

        BlobKey bk = fileService.getBlobKey(file);

    return bk;
}

Answer 1

您需要使用Java Client library：

GcsOutputChannel outputChannel =
    gcsService.createOrReplace(fileName, GcsFileOptions.getDefaultInstance());
outputChannel.write(ByteBuffer.wrap(content));
outputChannel.close();