如何在Java中组合路径？ [英] How to combine paths in Java?

问题描述

<$ c $是否有Java等价物c> C＃/ .NET中的System.IO.Path.Combine（） ？或者任何代码来完成这个？

Is there a Java equivalent for System.IO.Path.Combine() in C#/.NET? Or any code to accomplish this?

这个静态方法将一个或多个字符串组合成一个路径。

This static method combines one or more strings into a path.

推荐答案

您应该使用一个用于表示文件系统路径的类，而不是保持基于字符串的所有内容。

Rather than keeping everything string-based, you should use a class which is designed to represent a file system path.

如果你'重新使用Java 7或Java 8，你应该强烈考虑使用 java.nio.file.Path ; Path.resolve 可用于将一个路径与另一个路径或字符串组合在一起。 路径 辅助类也很有用。例如：

If you're using Java 7 or Java 8, you should strongly consider using java.nio.file.Path; Path.resolve can be used to combine one path with another, or with a string. The Paths helper class is useful too. For example:

Path path = Paths.get("foo", "bar", "baz.txt");

如果您需要迎合Java-7之前的环境，可以使用 java.io.File ，像这样：

If you need to cater for pre-Java-7 environments, you can use java.io.File, like this:

File baseDirectory = new File("foo");
File subDirectory = new File(baseDirectory, "bar");
File fileInDirectory = new File(subDirectory, "baz.txt");

如果您希望以后再将其作为字符串返回，可以调用 getPath（ ）。实际上，如果你真的想模仿 Path.Combine ，你可以写下这样的东西：

If you want it back as a string later, you can call getPath(). Indeed, if you really wanted to mimic Path.Combine, you could just write something like:

public static String combine(String path1, String path2)
{
    File file1 = new File(path1);
    File file2 = new File(file1, path2);
    return file2.getPath();
}

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