java代码修改linux权限

从API 查询知道，NIO的这种方式原生支持LINUX和UNIX低层系统

一下事修改linux文件权限位777，如需修改位644、755登其它权限，可通过调整perms.add（）的参数。

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private void changeFolderPermission(File dirFile) throws IOException {
    Set<PosixFilePermission> perms = new HashSet<PosixFilePermission>();
    perms.add(PosixFilePermission.OWNER_READ);
    perms.add(PosixFilePermission.OWNER_WRITE);
    perms.add(PosixFilePermission.OWNER_EXECUTE);
    perms.add(PosixFilePermission.GROUP_READ);
    perms.add(PosixFilePermission.GROUP_WRITE);
    perms.add(PosixFilePermission.GROUP_EXECUTE);
    perms.add(PosixFilePermission.OTHERS_EXECUTE);
    perms.add(PosixFilePermission.OTHERS_READ);
    perms.add(PosixFilePermission.OTHERS_WRITE);
    try {
        Path path = Paths.get(dirFile.getAbsolutePath());
        Files.setPosixFilePermissions(path, perms);
    } catch (Exception e) {
        logger.log(Level.SEVERE, "Change folder " + dirFile.getAbsolutePath() + " permission failed.", e);
        }
    }