如何使用java7文件属性api获取数字groupid/userid？

发布于 2024-11-16 20:52:34 字数 409 浏览 1 评论 0原文

我可以使用以下代码来获取文件所有者的名称；

    final PosixFileAttributes basicFileAttributes =
        Files.readAttributes( path, PosixFileAttributes.class, 
                                    LinkOption.NOFOLLOW_LINKS );
    String ownerName = basicFileAttributes.owner().getName();

但我也试图获取相关用户的数字unix id。在调试器中，我可以看到它隐藏在“UnixFileAttributes”（PosixFileAttributes 的子类）中，但是有没有任何合理的标准方法来获取它？

原文

I can use the following code to get the name of the owner of a file;

    final PosixFileAttributes basicFileAttributes =
        Files.readAttributes( path, PosixFileAttributes.class, 
                                    LinkOption.NOFOLLOW_LINKS );
    String ownerName = basicFileAttributes.owner().getName();

But I'm also trying to get hold of the numeric unix id of the user in question. In the debugger I can see it's hiding inside "UnixFileAttributes" (subclass of PosixFileAttributes), but is there any reasonably standard way to get hold of it ?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

℉服软 2024-11-23 20:52:34

实际上有一个“unix”视图，您可以通过以下方式访问此类特定于 Unix 的属性：

int uid = (int) Files.getAttribute(path, "unix:uid", NOFOLLOW_LINKS);

There's actually a "unix" view you can get access to such Unix-specific attributes through:

int uid = (int) Files.getAttribute(path, "unix:uid", NOFOLLOW_LINKS);

回复收藏 0 原文

只想待在家 2024-11-23 20:52:34

由于某些奇怪的原因，Java 团队拒绝对此进行记录。

但从
jdk/test/java/nio/file/Files/FileAttributes.java...

int mode = (Integer)Files.getAttribute(file, "unix:mode");
long ino = (Long)Files.getAttribute(file, "unix:ino");
long dev = (Long)Files.getAttribute(file, "unix:dev");
long rdev = (Long)Files.getAttribute(file, "unix:rdev");
int nlink = (Integer)Files.getAttribute(file, "unix:nlink");
int uid = (Integer)Files.getAttribute(file, "unix:uid");
int gid = (Integer)Files.getAttribute(file, "unix:gid");
FileTime ctime = (FileTime)Files.getAttribute(file, "unix:ctime");
map = Files.readAttributes(file, "unix:*");
map = Files.readAttributes(file, "unix:size,uid,gid");

For some strange reason the Java team refuses to document this.

But from
jdk/test/java/nio/file/Files/FileAttributes.java...

int mode = (Integer)Files.getAttribute(file, "unix:mode");
long ino = (Long)Files.getAttribute(file, "unix:ino");
long dev = (Long)Files.getAttribute(file, "unix:dev");
long rdev = (Long)Files.getAttribute(file, "unix:rdev");
int nlink = (Integer)Files.getAttribute(file, "unix:nlink");
int uid = (Integer)Files.getAttribute(file, "unix:uid");
int gid = (Integer)Files.getAttribute(file, "unix:gid");
FileTime ctime = (FileTime)Files.getAttribute(file, "unix:ctime");
map = Files.readAttributes(file, "unix:*");
map = Files.readAttributes(file, "unix:size,uid,gid");

回复收藏 0 原文

~没有更多了~