Java - 从S3下载的ZIP存档已损坏

Question

我正在尝试使用以下代码从S3存储桶下载ZIP存档：

S3Object fullObject = client.getObject(bucketName, key);
S3ObjectInputStream stream = fullObject.getObjectContent();

FileOutputStream outputStream = new FileOutputStream(archiveName);

while ((count = stream.read(data)) != -1) {
    outputStream.write(data, 0, count);
}

outputStream.close();
stream.close();

文件被下载，它与S3中放置的文件大小相同，唯一的问题是它已损坏。如果我输入unzip -t <archive_name.zip>，我会收到以下错误：

End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. unzip: cannot find zipfile directory in one of PCxazGHgMmDedx8wNM16L.zip or PCxazGHgMmDedx8wNM16L.zip.zip, and cannot find PCxazGHgMmDedx8wNM16L.zip.ZIP, period.

我尝试使用这样声明的ZipOutputStream：

ZipOutputStream zipStream = new ZipOutputStream(new BufferedOutputStream(outputStream));

但它需要一个ZipEntry，它基本上是一个我无法看到的归档中的新文件/目录，因为我只有一个流。

我该如何解决这个问题？

谢天谢地。