Java下载文件，带有带有进度条的Apache IO

Question

Basically, I'm trying to find a way to download files with Java Apache IO Commons and have a swing progress bar. I know how to download URL to file, using FileUtils.copyUrlToFile(); and such, but how would I add a progress bar?

Answer 1

IO 2.0和更高版本的Commons确实具有copyInputStreamToFile（InputStream源，File目标） ，因此您可以使用ProgressMonitorInputStream。

Answer 2

Since none of the methods of FileUtils accept an InputStream we can't use ProgressMonitorInputStream , and I can't see any other way into that API that would give info. on progress, I think this idea is a non-starter. It cannot be done.

Unless you are referring to copying multiple resources from URL (s) to File (s), then we could at least offer the progress of the group (eg "3 out of total of 5 files copied").