java ClassLoader.getResource() 不适用于 .jar 文件
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/1664073/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
ClassLoader.getResource() doesn't work from .jar file
提问by Patrick
I have the following code:
我有以下代码：
private final ImageIcon placeHolder = new ImageIcon(this.getClass().getClassLoader().getResource("Cards\trans.png"));
But this does not work once my application exported into a .jarfile.
但是一旦我的应用程序导出到.jar文件中，这将不起作用。
回答by Jon Skeet
Your "\t" is being compiled as a tab - you need to escape it:
您的 "\t" 正在编译为选项卡 - 您需要对其进行转义：
private final ImageIcon placeHolder = new ImageIcon(
this.getClass().getClassLoader().getResource("Cards\trans.png"));
Note the double backslash. This may not be the only thing wrong, of course - but it's a start...
注意双反斜杠。当然，这可能不是唯一的错误——但这是一个开始......
In fact, I would specify it with a forward slash instead. That works on both Windows and Unix-based OSes anyway, and it also works with jar files. The only reason I highlighted the double backslash was to raise the point of string escaping in general. Try this:
事实上，我会用正斜杠来指定它。无论如何，这适用于基于 Windows 和 Unix 的操作系统，并且它也适用于 jar 文件。我强调双反斜杠的唯一原因是为了提高字符串转义的重要性。试试这个：
private final ImageIcon placeHolder = new ImageIcon(
this.getClass().getClassLoader().getResource("Cards/trans.png"));
Next, make sure you've got the exactcorrect name for the file, including case. Even though Windows file systems aren't generally case-sensitive, jar files are. If it's actually "cards" instead of "Cards" or "TRANS.png" instead of "trans.png", it won't work.
接下来，确保您获得了完全正确的文件名称，包括大小写。尽管 Windows 文件系统通常不区分大小写，但 jar 文件是。如果它实际上是“卡片”而不是“卡片”或“TRANS.png”而不是“trans.png”，则它将不起作用。
回答by Basil
Use this for getting images in jar file
使用它来获取 jar 文件中的图像
ClassLoader.getSystemResource("images/Springz3.png"));
ClassLoader.getSystemResource("images/Springz3.png"));
