Java webstart在windows上加载linux swt jar(Java webstart loading linux swt jars on windows)

 我有一个java webstart应用程序，它使用swt作为界面（包括DJ Native Swing）。 该应用程序在Windows上运行良好，直到我尝试将linux和mac osx swt jar添加到应用程序以支持这些平台。 当从netbeans启动时，应用程序在linux下运行正常，只有正确的jar链接，但是当在任何平台上通过java webstart启动应用程序时，似乎加载了错误的jar文件。 
 
 这是我在launch.jnlp（以及其他内容）中的内容： 
 
<resources os="Windows" arch="x86">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-win32-x86.jar"/>
    <nativelib href="lib/swt-win32-x86.jar"/>
</resources>

<resources os="Windows" arch="x86_64">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-win32-x86_64.jar"/>
    <nativelib href="lib/swt-win32-x86_64.jar"/>
</resources>

<resources os="Windows" arch="amd64">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-win32-x86_64.jar"/>
    <nativelib href="lib/swt-win32-x86_64.jar"/>
</resources>

<resources os="Linux" arch="i386">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-linux-x86.jar"/>
    <nativelib href="lib/swt-linux-x86.jar"/>
</resources>

<resources os="Linux" arch="amd64">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-linux-x86_64.jar"/>
    <nativelib href="lib/swt-linux-x86_64.jar"/>
</resources>

<resources os="Mac OS X" arch="x86_64">
    <j2se java-vm-args="-XstartOnFirstThread -Xmx512m" version="1.5+"/>
    <jar href="lib/swt-macos-x86_64.jar"/>
</resources>

<resources os="Mac OS X" arch="x86">
    <j2se java-vm-args="-XstartOnFirstThread -Xmx512m" version="1.5+"/>
    <jar href="lib/swt-macos.jar"/>
</resources> 
 
 如果我理解正确，这应该导致窗口（取决于拱门）只加载swt-win32-x86.jar。 但是当我在Windows 7 64bit上启动应用程序，但是使用32位jvm时，我收到以下错误：NativeSwing [1]：引起：java.lang.UnsatisfiedLinkError：无法加载SWT库。 理由：NativeSwing [1]：java.library.path中没有swt-gtk-4234 NativeSwing [1]：java.library.path中没有swt-gtk NativeSwing [1]：无法加载库：C：\ Users \ dolf.swt \ lib \ win32 \ x86 \ swt-gtk-4234.dll NativeSwing [1]：无法加载库：C：\ Users \ dolf.swt \ lib \ win32 \ x86 \ swt-gtk.dll 
 
 当然，在Windows上找不到swt-gtk，它只应该在Linux上使用。 如果我在java的临时Internet文件查看器下检查java控制面板中的Resources，我确实看到java webstart已经下载了swt-linux-x86.jar和swt-win32-x86.jar。 显然，java webstart正在下载错误的jar文件。 
 
 我希望有人知道为什么会出错。 

I have a java webstart application which uses swt for the interface (and includes DJ Native Swing). The application runs fine on windows, until I try to add the linux and mac osx swt jars to the application in order to support those platforms. The application runs fine under linux when started from netbeans with only the correct jars linked, but when launching the application through java webstart on any platform, it seems the wrong jar files are loaded.
 
This is what i have in my launch.jnlp (among other stuff):
 
<resources os="Windows" arch="x86">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-win32-x86.jar"/>
    <nativelib href="lib/swt-win32-x86.jar"/>
</resources>

<resources os="Windows" arch="x86_64">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-win32-x86_64.jar"/>
    <nativelib href="lib/swt-win32-x86_64.jar"/>
</resources>

<resources os="Windows" arch="amd64">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-win32-x86_64.jar"/>
    <nativelib href="lib/swt-win32-x86_64.jar"/>
</resources>

<resources os="Linux" arch="i386">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-linux-x86.jar"/>
    <nativelib href="lib/swt-linux-x86.jar"/>
</resources>

<resources os="Linux" arch="amd64">
    <j2se java-vm-args="-Xmx512m" version="1.5+"/>
    <jar href="lib/swt-linux-x86_64.jar"/>
    <nativelib href="lib/swt-linux-x86_64.jar"/>
</resources>

<resources os="Mac OS X" arch="x86_64">
    <j2se java-vm-args="-XstartOnFirstThread -Xmx512m" version="1.5+"/>
    <jar href="lib/swt-macos-x86_64.jar"/>
</resources>

<resources os="Mac OS X" arch="x86">
    <j2se java-vm-args="-XstartOnFirstThread -Xmx512m" version="1.5+"/>
    <jar href="lib/swt-macos.jar"/>
</resources> 
 
If I understand correctly, this should result in on windows (depending on the arch) only the swt-win32-x86.jar being loaded. But when I launch the application on windows 7 64bit, but with a 32bit jvm I get the following error: NativeSwing[1]: Caused by: java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons: NativeSwing[1]: no swt-gtk-4234 in java.library.path NativeSwing[1]: no swt-gtk in java.library.path NativeSwing[1]: Can't load library: C:\Users\dolf.swt\lib\win32\x86\swt-gtk-4234.dll NativeSwing[1]: Can't load library: C:\Users\dolf.swt\lib\win32\x86\swt-gtk.dll
 
Of course no swt-gtk can be found on Windows, it should only be needed on Linux. If I check the Resources in the java control panel under the temporary internet files viewer of java, I indeed see both swt-linux-x86.jar and swt-win32-x86.jar have been downloaded by java webstart. Clearly, java webstart is downloading the wrong jar files.
 
I hope anyone has an idea why this is going wrong.

原文：https://stackoverflow.com/questions/16065539