jar中的Java listFiles目录 [英] Java listFiles in directory in jar

问题描述

有没有办法在打包到jar的目录中使用 listFiles（）？

Is there any way to use listFiles() on a directory that's been packaged into a jar?

假设我的资源目录中有一个目录，其中包含一些文本文件： texts / text1.txt 和 texts / text2.txt 。

Let's say I have a directory in my resource directory with some text files: texts/text1.txt and texts/text2.txt.

在这个Java程序中，我有一个类需要使用 listFiles（）来获取这些文件的列表。我会得到像 jar：file：/home/soupkitchen.jar/！text 。我希望这是一个目录。有没有办法将它作为包含文件的 java.io.File 目录处理？现在它似乎只被列为既不是文件也不是目录。

And within this Java program I have a class that needs to use listFiles() to get a list of those files. I'll get something like jar:file:/home/soupkitchen.jar/!text. I'd expect that to be a directory. Is there any way to be able to treat it as a java.io.File directory containing files? Right now it seems to only be listed as neither a file nor directory.

推荐答案

没有。 java.io.File只能用于列出真实目录。

No. java.io.File can only be used to list real directories.

但是，您可以将其视为java.nio.file.Path。

However, you can treat it as a java.nio.file.Path.

总的来说，您有三种选择：

Overall, you have three options:

1. 打开.jar作为 Zip文件系统并使用 Files.newDirectoryStream 或 Files.list 。


2. 遍历.jar文件中的所有条目，查找匹配的名称。


3. 放置文本.jar中包含目录中所有条目名称的文件，因此您不必尝试列出它们。

1. Open the .jar as a Zip File System and use Files.newDirectoryStream or Files.list.
2. Iterate through all entries in the .jar file, looking for names that match.
3. Put a text file in your .jar that contains the names of all the entries in the directory, so you don't have to try to list them.

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