我应该关心 File#separator for Path#resolve(String)

Question

我正在编写一个方法，将文件从 HDFS 复制到本地磁盘。

String pathString = ".../.../..."; slash-separated HDFS path string
Path directory = ...;

Path target = directory.resolve(pathString);

现在我应该将所有带有 File#separator 的斜线替换为 pathString 吗？

换句话说，

即使 Windows 我也可以跟随吗？

Path base = Path.get(a, b);
String pathname = "c/d";
Path target = base.resolve(pathname); // Will work as a\b\c\d?

Answer 1

File#separator 如果你想让你的路径逻辑与平台无关，则没有必要。一种更简单的方法是使用 Paths.get() 构建子路径并解决它。例如：

Path path = Paths.get("a", "b", "c");
Path directory = ...;

Path target = directory.resolve(path);

Answer 2

我正在添加我自己的答案。

// event with Windows
final Path directory = Paths.get("a", "b");
final String pathname = "c/d";
final Path resolved = directory.resolve(pathname);
log.debug("resolved: {}", resolved.toAbsolutePath());

我得到了.:\...\a\b\c\d。

我应该关心 File#separator for Path#resolve(String)

Should I care about File#separator for Path#resolve(String)

java

nio

path

separator