Java Swing：在Jar中显示图像 [英] Java Swing: Displaying images from within a Jar

问题描述

当从eclipse运行Java应用程序时，我的ImageIcon显示得很好。

When running a Java app from eclipse my ImageIcon shows up just fine.

但是在创建一个jar之后，图像的路径显然已经搞砸了。

But after creating a jar the path to the image obviously gets screwed up.

有没有办法在运行时从jar中提取图像，以便我可以打开它？或者，有更好的方法吗？

Is there a way to extract an image from the jar at runtime so I can then open it up? Or, is there a better way to do this?

如果可能，我想分发一个jar文件。

I'd like to distribute a single jar file if possible.

推荐答案

要从同一个罐子中的图像文件中创建 ImageIcon ，您的代码将被加载：

To create an ImageIcon from an image file within the same jars your code is loaded:

new javax.swing.ImageIcon(getClass().getResource("myimage.jpeg"))

Class.getResource 返回资源的URL（或 null ！）。 ImageIcon 有一个从URL加载的构造函数。

Class.getResource returns a URL of a resource (or null!). ImageIcon has a constructors that load from a URL.

为jar中的资源构造一个URL而不是您的类路径，请参阅 java.net.JarURLConnection 的文档。

To construct a URL for a resource in a jar not on your "classpath", see the documentation for java.net.JarURLConnection.

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