如何在文件路径中处理〜 [英] How to handle ~ in file paths

问题描述

我正在编写一个简单的命令行Java实用程序。我希望用户能够使用〜运算符传递相对于其主目录的文件路径。所以类似〜/ Documents /...

I'm writing a simple command line Java utility. I would like the user to be able to pass in a file path relative to their home directory using the ~ operator. So something like ~/Documents/...

我的问题是有没有办法让Java解决这个问题路径类型自动？或者我是否需要扫描〜运算符的文件路径？

My question is is there a way to make Java resolve this type of path automatically? Or do I need to scan the file path for the ~ operator?

似乎应该将这种类型的功能烘焙到文件对象中。但它似乎不是。

It seems like this type of functionality should be baked into the File object. But it doesn't seem to be.

推荐答案

一个简单的 path = path.replaceFirst（^ 〜，System.getProperty（user.home））; 何时从用户处获取（在使用文件之前） ）应该足以在大多数情况下工作 - 因为如果它是路径的目录部分中的第一个字符，则只扩展到主目录。

A simple path = path.replaceFirst("^~", System.getProperty("user.home")); when it is gotten from the user (before making a File out of it) should be enough to work in most cases - because the tilde is only expanded to a home directory if it is the first character in a directory section of a path.

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