Question

在我的Java程序中，我想显示移动文件的进度。我使用以下代码片段来复制文件，这允许我跟踪复制的字节并在进度条中显示它。我想知道代码是否适合移动文件而不是复制它们？

        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(sourceFile));
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(targetFile));


            int theByte;

            while((theByte = bis.read()) != -1)
            {
                bos.write(theByte);

            }

            bis.close();
            bos.close();

Answer 1

好的，所以“移动”操作是最后带有“删除”的副本，例如......

BufferedInputStream bis = null;
BufferedOutputStream bos = null;

try {
    bis = new BufferedInputStream(new FileInputStream(sourceFile));
    bos = new BufferedOutputStream(new FileOutputStream(targetFile));

    int theByte;

    while((theByte = bis.read()) != -1)
    {
        bos.write(theByte);
    }

    bos.close();
    bis.close();
    // You may want to verify that the file's are the same (ie the file size for example)
    if (!sourceFile.delete()) {
        throw new IOException("Failed to remove source file " + sourceFile);
    }

} catch (IOException exp) {
    exp.printStackTrace();
} finally {
    try {
        bis.close();
    } catch (Exception exp) {
    }
    try {
        bos.close();
    } catch (Exception exp) {
    }
}

不使用renameTo（）移动文件

1 个答案: