用Java打开和编辑.jar文件？ [英] Open and edit file in .jar with Java?

问题描述

您打算如何开启.jar内的.xml档案并进行编辑？

How would you go about opening an .xml file that is within a .jar and edit it?

我知道您可以...

InputStream myStream = this.getClass().getResourceAsStream("xmlData.xml");

但是如何打开xmlData.xml，编辑文件并将其保存在.jar ？我会发现这对于了解而不想编辑.jar ... 之外的文件很有用，并且应用程序需要一直运行。

But how would you open the xmlData.xml, edit the file, and save it in the .jar? I would find this useful to know and don't want to edit a file outside of the .jar... and the application needs to stay running the entire time!

谢谢！

推荐答案

Jar文件只是带有不同文件后缀的.zip文件，内容。因此，请使用 java.util.zip 下的类来读取和/或写入内容。

Jar files are just .zip files with different file suffix, and naming convention for contents. So use classes from under java.util.zip to read and/or write contents.

修改内容不是保证（甚至可能）影响运行系统，因为类加载器可能会缓存内容，因为它认为合适。

Modifying contents is not guaranteed (or even likely) to effect running system, as class loader may cache contents as it sees fit.

因此，可能更好地了解你实际上试图用这个实现。修改jar的内容在飞行中听起来像复杂和容易出错的方法...

So it might be good to know more about what you are actually trying to achieve with this. Modifying contents of a jar on-the-fly sounds like complicated and error-prone approach...

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