android - 向服务器发送 spitting/chunk 文件有什么用

Question

我必须将大视频文件上传到服务器，但上传时间太长，所以我决定将文件拆分/分块，然后将它们发送到服务器

拆分文件后，我得到如下响应:

[ /storage/emulated/0/1493357699.mp4.001, /storage/emulated/0/1493357699.mp4.002, /storage/emulated/0/1493357699.mp4.003, /storage/emulated/0/1493357699.mp4.004, /storage/emulated/0/1493357699.mp4.005, /storage/emulated/0/1493357699.mp4.006, /storage/emulated/0/1493357699.mp4.007, /storage/emulated/0/1493357699.mp4.008 ] 

我的想法是上传spitting/chunk文件到服务器有什么用？

我的分割文件代码:

 public static List<File> splitFile(File f) {

        try {

            int partCounter = 1;
            List<File> result = new ArrayList<>();
            int sizeOfFiles = 1024 * 1024;// 1MB
            byte[] buffer = new byte[sizeOfFiles];
            // create a buffer of bytes sized as the one chunk size

            BufferedInputStream bis = new BufferedInputStream(new FileInputStream(f));
            String name = f.getName();

            int tmp = 0;
            while ((tmp = bis.read(buffer)) > 0) {
                File newFile = new File(f.getParent(), name + "." + String.format("%03d", partCounter++));
                // naming files as <inputFileName>.001, <inputFileName>.002, ...
                FileOutputStream out = new FileOutputStream(newFile);
                out.write(buffer, 0, tmp);//tmp is chunk size. Need it for the last chunk,
                // which could be less then 1 mb.
                result.add(newFile);
            }
            return result;
        } catch (Throwable throwable) {
            throwable.printStackTrace();
        }
        return null;
    }

Answer 1

我已经在我的一个项目中实现了。我看到两个主要原因:

1. 实现多线程/多连接上传 block 。您可以同时上传多个 block 。
2. 如果任一 block 上传失败(取决于服务器响应)，则停止/恢复其余 block 的上传