如何使用 Java SDK for Dropbox API v2 获取上传进度？

Question

我在其开发者页面和 Stack Overflow 上搜索了 Dropbox 文档，但我还没有找到在 Java SDK 中获取文件上传进度的方法 API v2。我不知道如何获取上传进度。有人可以帮我解决这个问题吗？

我试过ProgresMonitorInputStream，但它只告诉我读取文件的进度，并没有显示上传到Dropbox服务器的进度。

DbxRequestConfig config = DbxRequestConfig.newBuilder("My App/1.0.0").build();
DbxClientV2 client = new DbxClientV2(config, Constants.ACCESS_TOKEN);

    FileMetadata metadata;

    try {
        try (InputStream in = new FileInputStream(filepath)) {

            InputStream progressMonitorInputStream = new ProgressMonitorInputStream(null, "Uploading...", in);

            metadata = client.files()
                    .uploadBuilder("/test.exe")
                    .withMode(WriteMode.OVERWRITE)
                    .uploadAndFinish(progressMonitorInputStream);
        }

    } catch (DbxException | IOException e) {
        e.printStackTrace(System.err);
        return;
    }

我希望上传进度显示在 JProgressBar 中。

Answer 1

Dropbox 团队的 Greg K. 最近对此做出了回应：

The Dropbox API v2 Java SDK now offers progress listeners for uploads and downloads. This has been released in v3.0.9:

https://github.com/dropbox/dropbox-sdk-java/releases/tag/v3.0.9

There's an example of using it with with the uploadAndFinish method (https://dropbox.github.io/dropbox-sdk-java/api-docs/v3.0.x/com/dropbox/core/DbxUploader.html#uploadAndFinish-java.io.InputStream-long-com.dropbox.core.util.IOUtil.ProgressListener-) for an upload here:

https://github.com/dropbox/dropbox-sdk-java/blob/master/examples/upload-file/src/main/java/com/dropbox/core/examples/upload_file/Main.java#L50

It works the same way with file downloads; the download method (https://dropbox.github.io/dropbox-sdk-java/api-docs/v3.0.x/com/dropbox/core/DbxDownloader.html#download-java.io.OutputStream-com.dropbox.core.util.IOUtil.ProgressListener-) optionally takes a ProgressListener parameter the same way.

[交叉链接供参考：https://www.dropboxforum.com/t5/API-Support-Feedback/How-to-get-upload-progress-with-Java-SDK-v2/m-p/297837#M18078]

如何使用 Java SDK for Dropbox API v2 获取上传进度？

How to get upload progress with Java SDK for Dropbox API v2?

java

dropbox

dropbox-api