使用BufferedInput/OutputStream进行java文件管理

Question

我使用BufferedInputStream和BufferedOutput Stream以编程方式复制mp4视频。它被正确复制了，只是因为我丢失了音频！这是我的代码：

    FileInputStream fi = null;
    FileOutputStream fo = null;
    try {
        File f = new File("C:\\Users\\Zerok\\Videos\\v.mp4");
        fi = new FileInputStream(f);
        fo = new FileOutputStream("video.mp4");
        BufferedInputStream buffIn = new BufferedInputStream(fi);
        BufferedOutputStream buffOut = new BufferedOutputStream(fo);

        int read;
        while((read = buffIn.read()) != -1){
            buffOut.write(read);
        }

    } catch (FileNotFoundException ex) {
        Logger.getLogger(JavaApplication13.class.getName()).log(Level.SEVERE, null, ex);
    } catch (IOException ex) {
        Logger.getLogger(JavaApplication13.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        try {
            fi.close();
        } catch (IOException ex) {
            Logger.getLogger(JavaApplication13.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

视频。mp4文件工作正常，只是音频不足。这是什么原因？我正确使用这些课程了吗

Answer 1

问题是，我没有关闭缓冲输出流。我使用了“资源尝试”块，它会在资源完成后自动关闭资源：

 try (BufferedOutputStream buffOut = new BufferedOutputStream(fo)) {
                int read;
                System.out.println("Beginning to copy...");
                while((read = buffIn.read()) != -1){
                    buffOut.write(read);
                }
            }

现在，音频可以完美地再现