英文:
Java Jar Looking for Windows SWT Library on Linux
问题
一年前，我创建了一个在Windows上开发并部署到Linux的Eclipse项目。我使用了SWT，并且通过适当的SWT jar包在Linux上成功运行它。没有问题。
最近，我开始了一个新项目，采用了相同的方法：在Windows上开发，部署到Linux，使用SWT。我使用了与之前成功项目相同的项目结构，但它无法在Linux上运行。当我尝试在Linux上运行新项目时，它抛出了一个UnsatisfiedLinkError错误：
Exception in thread "main" java.lang.UnsatisfiedLinkError: 无法加载SWT库。原因：
java.library.path中没有swt-win32-4924r25
java.library.path中没有swt-win32
无法加载库：/home/hmartin/.swt/lib/linux/x86_64/libswt-win32-4924r25.so
无法加载库：/home/hmartin/.swt/lib/linux/x86_64/libswt-win32.so
我觉得奇怪的是，它似乎在寻找Windows版本的SWT jar包，我不明白为什么会这样。我已经尝试过更改项目首选项、构建路径、build.xml、清单文件等。
我有一个清单文件，应该告诉应用程序其SWT库的位置（与应用程序jar包相同的目录），但我怀疑我的项目并不知道它的存在。在一年前制作的可工作项目中，我记得能够让Eclipse在导出时生成一个清单文件，那就是我所做的。但在这个（有问题的）项目中，我无法生成清单文件，也不能在导出时从工作区选择清单文件。这次，我只是自己创建了一个清单文件，遵循了命名约定，然后希望奇迹会发生。但奇迹并没有发生。
非常感谢您提供帮助、建议、推荐等。
英文:
A year ago, I created an Eclipse project that was developed on Windows and deployed to Linux. I used SWT, and I was able to get it running on Linux with the appropriate SWT jar. No problems.
Recently, I started a new project with the same MO: develop on Windows, deploy to Linux, use SWT. I used the same project structure as the project that worked, but it won't work on Linux. When I try to run the new project on Linux, it hits me with an UnsatisfiedLinkError:
Exception in thread "main" java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
no swt-win32-4924r25 in java.library.path
no swt-win32 in java.library.path
Can't load library: /home/hmartin/.swt/lib/linux/x86_64/libswt-win32-4924r25.so
Can't load library: /home/hmartin/.swt/lib/linux/x86_64/libswt-win32.so
What looks peculiar to me is that it seems to be looking for the Windows version of the SWT jar, and I don't understand why that could be. I've fiddled with project preferences, build paths, build.xml, manifests, etc.
I do have a manifest that is supposed to tell the application where its SWT library is (in the same directory as the application jar), but I suspect that my project doesn't know it exists. With the working project I made a year ago, I remember being able to have Eclipse generate a manifest file upon export, and that's what I did. With this (broken) project, I am not able to generate a manifest file nor do I have the option of selecting one from the workspace upon export. This time, I just made a manifest file myself, followed the naming conventions, and hoped the magic happened. The magic has not happened.
Help, suggestions, recommendations, etc. are much appreciated.
答案1
得分: 0
玩弄了一个测试项目和导出设置之后，我发现问题的原因是JAR导出界面上的一个复选框：“导出生成的类文件和资源”。我之前没有勾选这个框，这意味着（出于某种原因）Eclipse不会显示给我生成或选择清单的选项。勾选了该复选框并选择了清单后，新项目现在可以在目标平台上运行。
英文:
After playing around with a test project and export settings, I discovered that the cause of my problems was one single check box on the JAR export screen: "Export generated class files and resources". I had this box unchecked, which meant that (for some reason) Eclipse wouldn't show me the options to generate or select a manifest. With that box checked and manifest selected, the new project now runs on the target platform.
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