如何在不重新打包整个jar的情况下更新jar中的一个文件？ [英] How do I update one file in a jar without repackaging the whole jar?

问题描述

我有一个名为myfile.jar的.jar文件。在这个jar文件里面是一个名为images的文件夹。在这个名为images的文件夹中，我有一个名为hi.png的图像。我想用该图像的新版本更新该图像，也称为hi.png。我不想从单个jar文件中提取所有文件然后重新打包它们，我只是想更新图像。所以，我像往常一样去命令行，键入几行代码，然后我执行以下命令：

I have a .jar file called myfile.jar. Inside this jar file is a folder called images. Inside this folder called images, I have an image called hi.png. I want to update that image with a new version of that image, which is also called hi.png. I do not want to extract all of the files from the single jar file and then repackage them, I just want to update the image. So, I go to command line as usual, type a few lines of code, and then I do this command:

jar uf myfile.jar -C images hi.png

我希望用这个命令做的是取代老hi.png与新的hi.png。但是，它给了我这个错误：

What I hoped to do with that command was to replace the old hi.png with the new hi.png. But, it gives me this error:

images\hi.png : no such file or directory

我该怎么做才能解决这个问题？

What do I do to fix this?

额外信息：我不能使用类似WinRAR的东西，我必须使用命令行执行此操作。

Extra info: I can not use something like WinRAR, I have to do this with command line.

推荐答案

-C 正在更改本地目录，正在寻找那里有 hi.png 。它不能控制你将它注入JAR文件的位置。

-C is changing the local directory, and is looking for hi.png there. It's not controlling where you're trying to inject it into the JAR file.

我会尝试制作一个名为 images ，将你的本地 hi.png 移动到那里，使 images 当前工作目录的子目录，然后运行这个：

I would try making a new directory called images, moving your local hi.png into that, making images a child directory of your current working directory, then just run this:

jar uf myfile.jar images\hi.png

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