在哪里使用java.nio.file.Path类的resolve()和relativize()方法? [英] Where to use resolve() and relativize() method of java.nio.file.Path class?

问题描述

Path p1 = Paths.get("/Users/jack/Documents/text1.txt");
Path p2 = Paths.get("/Users/jack/text2.txt");
Path result1 = p1.resolve(p2);
Path result2 = p1.relativize(p2);

System.out.println("result1: "+result1);
System.out.println("result2: "+result2);

输出

result1: /Users/jack/text2.txt
result2: ../../text2.txt

我无法理解resolve()和relativize()的工作方式?

I cannot understand how resolve() and relativize() works?

result1和result2的实际用法是什么?

What is the actual use of result1 and result2?

推荐答案

这些是我代码库中的代码段，可帮助您了解resolve()方法的使用

These are the code snippets from my code base that help you to understand the use of the resolve() method

private File initUsersText() throws Exception
{
    Path dir = testdir.getPath().toRealPath();
    FS.ensureDirExists(dir.toFile());
    File users = dir.resolve("users.txt").toFile();

    writeUser( users );
    return users;
}


private File initUsersText() throws Exception
{
    Path dir = testdir.getPath().toRealPath();
    FS.ensureDirExists(dir.toFile());
    File users = dir.resolve("users.txt").toFile();

    writeUser( users );
    return users;
}

这些是使用relativize()的示例

And these are the examples of the use of relativize()

public ScopePath pathToClassName(Path file) {
    if (!isValidClass(file))
        return null;

    Path relativePath = root.relativize(root.resolve(file));
    String withoutExtension = removeExtension(relativePath.toString());
    return new ScopePath(withoutExtension.replace(File.separator, "."));
}


private String getRelativePath(Path p) {
    String relativePath = packageDir.relativize(p)
            .toString();

    if (File.separator.equals("\\")) {
        relativePath = relativePath.replace("\\", "/");
    }

    return relativePath;
}

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