如何读取破坏的符号链接指向的路径？(How to read the path that a broken symbolic link points to?)

如果symlink是与符号链接对应的File对象，则：

File target = symlink.getCanonicalPath();

...成功返回它指向的目标。 Paths#toRealPath()也适用于相同的情况。

但是，如果符号链接断开（悬空），则上述两个API都无法返回表示它所指向的（不存在的）事物的File （或Path ）。

我正在编写一个需要能够读取这些值的工具，即使对于悬空的符号链接也是如此。 我使用什么API来获取符号链接指向的文件或目录（无论符号链接是正确还是损坏）？

更新

根据接受的答案，可以使用以下方法获取符号链接的目标（即使是破坏的符号）：

Path target = Files.readSymbolicLink(Paths.get("/some/directory/symlink"));

...如果target是相对的，您可以通过执行以下操作，根据找到符号链接本身的位置取消引用它：

Paths.get("/some/directory/symlink").resolveSibling(".").resolve(target);

If symlink is a File object that corresponds to a symbolic link, then:

File target = symlink.getCanonicalPath();

… succeeds in returning the target that it is pointing to. Paths#toRealPath() also works in the same situation.

However, if the symbolic link is broken (dangling), both of the above APIs fail to return a File (or Path) representing the (non-existing) thing that it's pointing to.

I am writing a tool that needs to be able to read those values, even for dangling symlinks. What API do I use to obtain the file or directory that a symlink points at (regardless of whether the symlink is correct or broken)?

update

Based on the accepted answer, one can obtain the target of the symlink (even a broken one) using:

Path target = Files.readSymbolicLink(Paths.get("/some/directory/symlink"));

… if target is then relative, you can de-reference it based on the location where the symlink itself is found by doing the following:

Paths.get("/some/directory/symlink").resolveSibling(".").resolve(target);

最满意答案

你可以使用java的nio文件系统api：

Path target = Files.readSymbolicLink(Paths.get("/symlink"));

Java文档规定“链接的目标不需要存在”。

You can use java's nio file system api:

Path target = Files.readSymbolicLink(Paths.get("/symlink"));

Java documentation stipulates that "the target of the link need not exist".