带有Apache FileUtils.copyDirectory(...)的进度栏 [英] Progress bar with Apache FileUtils.copyDirectory(...)

问题描述

有人知道如何为Apache FileUtils.copyDirectory(File src, File dst)实现进度条吗?在

Does anyone know any way of implementing progress bar for Apache's FileUtils.copyDirectory(File src, File dst)? I don't see anything helpful in JavaDocs and API. Seems like a common use case in dealing with batch disk operations, so I'm not sure if I miss something obvious.

推荐答案

我想您将不得不自己做.我看到了立即解决方案:

I guess you will have to do that yourself. I see this immediate solution:

1. 找到要复制的所有文件，然后首先计算数量或文件总大小(取决于进度条应测量的大小)
2. 使用FileFilter作为回调，以将进度传达给进度条

1. Find all files you are about to copy and count the number or total file size first (depending on what your progress bar should measure)
2. Copy the files using FileUtils.copyDirectory(File, File, FileFilter) and "abuse" the FileFilter as a callback to communicate progress to your progress bar

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