java ant : jar 和 zipfileset - 将文件从一个 JAR 复制到另一个
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ant : jar and zipfileset - copy files from one JAR into another
提问by bguiz
I am currently doing this:
我目前正在这样做：
<jar update="yes"
jarfile="${pwd}/dist/${release}_installer.jar">
<zipfileset src="${pwd}/dist/app.jar" includes="com/izforge/izpack/panels/**"/>
<zipfileset src="${pwd}/dist/app.jar" includes="com/xyz/img/logo.png"/>
</jar>
My existing installer JAR gets updated to include the files as needed, extracted from the app JAR.
我现有的安装程序 JAR 得到更新，以根据需要包含从应用程序 JAR 中提取的文件。
So far, so good.
到现在为止还挺好。
However, I want to modify the behaviour such that the path of the image file is different than what is being copied from:
但是，我想修改行为，使图像文件的路径与从中复制的路径不同：
Currently:
目前：
com/izforge/izpack/panels/MyIzPanel.class
com/xyz/img/logo.png
What I want:
我想要的是：
com/izforge/izpack/panels/MyIzPanel.class
blah/img/logo.png
So I need to copy the files, but use <zipfileset>and <jar>in such a way that I can modify the directory structure.
所以我需要复制文件，但使用<zipfileset>和<jar>的方式可以修改目录结构。
Is there a way to do this, apart from unzipping the entire contents copying file and then zipping it back up again?
除了解压缩整个内容复制文件然后再次压缩它之外，有没有办法做到这一点？
EDIT:
编辑：
Link to earlier related question: ant task to remove files from a jar
链接到较早的相关问题：ant task to remove files from a jar
回答by Grodriguez
You can use the fullpathattribute:
您可以使用该fullpath属性：
<zipfileset src="${pwd}/dist/app.jar"
includes="com/xyz/img/logo.png" fullpath="blah/img/logo.img"/>
If you need to copy several files you may want to have a look at the prefixattribute, e.g.:
如果您需要复制多个文件，您可能需要查看prefix属性，例如：
<zipfileset src="${pwd}/dist/app.jar"
includes="**/*.png" prefix="blah/img"/>
回答by Hachmaninow
In order to modify the directory structure within the archive on the fly you can use the task in combination with <mappedresources>, eg:
为了动态修改存档中的目录结构，您可以将任务与<mappedresources>结合使用，例如：
<jar file="target.jar" update="true">
<mappedresources>
<zipfileset src="source.jar">
<include name="com/xyz/img/*.png"/>
</zipfileset>
<mapper type="glob" from="com/xyz/img/*.png" to="bla/img/*.png" />
</mappedresources>
</jar>
回答by Jarek Przygódzki
You should probably look into zipgroupfilesetas explained here.
您可能应该按照此处的说明查看zipgroupfileset。
