Java 如何使用eclipse在jar文件中包含所有图像
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How to includes all images in jar file using eclipse
提问by sAaNu
I made a java application and bundled all classes in a jar file. When I run the project from eclipse, my application is running successfully. But when I try to run my .jarfile, I am not getting the icons used by my application. In the code I get my icons from images directory present in project folder. How can I present these image files to the end user when using a jar?
我制作了一个 java 应用程序并将所有类捆绑在一个 jar 文件中。当我从 Eclipse 运行项目时，我的应用程序运行成功。但是当我尝试运行我的.jar文件时，我没有得到我的应用程序使用的图标。在代码中，我从项目文件夹中的图像目录中获取我的图标。使用 jar 时如何将这些图像文件呈现给最终用户？
I am loading the image like so:
我正在像这样加载图像：
final public ImageIcon iReport=new ImageIcon("images/Report.png");
I have also tried
我也试过
final public ImageIcon iquit=new ImageIcon(getClass().getResource("images/quit.png"));
and
和
final public ImageIcon iquit=new ImageIcon(getClass().getResource("/images/quit.png"));
But this results in an error:
但这会导致错误：
Exception in thread "main" java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(Unknown Source)
采纳答案by BalusC
You need to get it from the classpath instead of from the local disk file system.
您需要从类路径而不是从本地磁盘文件系统获取它。
Assuming that imagesis actually a package and that this package is inside the same JAR as the current class, then do so:
假设它images实际上是一个包，并且该包与当前类位于同一个 JAR 中，然后执行以下操作：
final public ImageIcon iReport =
new ImageIcon(getClass().getResource("/images/Report.png"));
回答by gotomanners
The files in jar files are treated as "Resources". you need to access them as a classpath resource, regular File access methods does not work there.
jar 文件中的文件被视为“资源”。您需要将它们作为类路径资源访问，常规文件访问方法在那里不起作用。
Try this:
尝试这个：
final public ImageIcon iReport = (new ImageIcon(getClass().getResource("images/Report.png")));
回答by Velja
I know this was asked long ago, but it might help others with the same problem, like me. I was already using getClass().getResource("..."), but the resource didn't get exported with .jar file. I solved the problem by refreshing the 'Resources' folder, and its every subfolder.
我知道很久以前就有人问过这个问题，但它可能会帮助其他有同样问题的人，比如我。我已经在使用 getClass().getResource("...")，但是资源没有通过 .jar 文件导出。我通过刷新“资源”文件夹及其每个子文件夹解决了这个问题。
回答by SorcerOK
100% works
100% 有效
final public ImageIcon iReport = new ImageIcon(getClass().getResource("/Report.png"));
Don't forget about "/" at pathfor image.
不要忘记path图像的“/” 。
