Amazon S3的上传进度栏

Question

在S3上上传文件时，如何显示上传进度条（百分比）？使用Java我正在使用putObject。我正在做这样的事情：

CompletableFuture<Void> future = CompletableFuture.runAsync(new Runnable() {
    @Override
    public void run() {
PutObjectRequest putObjectRequest = new PutObjectRequest(
                Constants.S3_BUCKET_NAME, key, mpf.getInputStream(),
                metadata)
        .withStorageClass(StorageClass.ReducedRedundancy);

putObjectRequest.setProgressListener(new ProgressListener() {
        @Override
        public void progressChanged(ProgressEvent progressEvent) {
            System.out.println(progressEvent
                    .getBytesTransfered()
                    + ">> Number of byte transfered "
                    + new Date());
            progressEvent.getBytesTransfered();
            double totalByteRead = request
                    .getSession().getAttribute(
                                                    Constants.TOTAL_BYTE_READ) != null ? (Double) request
                                            .getSession().getAttribute(Constants.TOTAL_BYTE_READ) : 0;

            totalByteRead += progressEvent.getBytesTransfered();
            request.getSession().setAttribute(Constants.TOTAL_BYTE_READ, totalByteRead);
            System.out.println("total Byte read "+ totalByteRead);

            request.getSession().setAttribute(Constants.TOTAL_PROGRESS, (totalByteRead/size)*100);
        System.out.println("percentage completed >>>"+ (totalByteRead/size)*100);   
        if (progressEvent.getEventCode() == ProgressEvent.COMPLETED_EVENT_CODE) {
            System.out.println("completed  ******");
        }
    }
});
s3Client.putObject(putObjectRequest);
    }
});

我正在运行异步操作，以便在上传文件时，我们可以浏览UI上的其他选项卡。上载文件时，它不应被阻止。但是我不知道如何显示该文件的上传进度栏。