JavaFx + Felix on windows WinPlatformFactory not found

问题

I have a desktop application that uses Apache felix and swing, with embebed javafx UIs, javafx is being loaded into the project by a maven embebed dependency, and it works fine on mac.

But when i run it on windows it gives me the following error:

java.lang.ClassNotFoundException: com.sun.glass.ui.win.WinPlatformFactory not found by my-software [38]
    at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1574)
    at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:79)
    at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(undleWiringImpl.java:2018)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at com.sun.glass.ui.PlatformFactory.getPlatformFactory(PlatformFactory.java:42)
    at com.sun.glass.ui.Application.run(Application.java:146)
    at com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:257)
    at com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:211)
    at javafx.embed.swing.JFXPanel.initFx(JFXPanel.java:215)
    at javafx.embed.swing.JFXPanel.<init>(JFXPanel.java:230)
    at br.com.mysoftware.fx.java.DownloadExplorer.initAndShowGUI(DownloadExplorer.java:68)
    at br.com.mysoftware.fx.java.DownloadExplorer$1.run(DownloadExplorer.java:120)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)____________________________Welcome to Apache Felix Gogo


    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)

    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82) Failed to load Glass factory class Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at com.sun.glass.ui.Application.run(Application.java:146)
    at com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:257)
    at com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:211)
    at javafx.embed.swing.JFXPanel.initFx(JFXPanel.java:215)
    at javafx.embed.swing.JFXPanel.<init>(JFXPanel.java:230)
    at br.com.mysoftware.fx.java.DownloadExplorer.initAndShowGUI(DownloadExplorer.java:68)
    at br.com.mysoftware.fx.java.DownloadExplorer$1.run(DownloadExplorer.java:120)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)

    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

回答1:

javafx is being loaded into the project by a maven embebed dependency

I don't think embedding the javafx jar is the correct approach, if that is what you're doing. You'll be missing some native parts, I guess.

Rather use the "org.osgi.framework.system.packages.extra" mechanism.

You can have a look at the Dromber FX code (the modular application framework for JavaFX, which combines JavaFX and OSGi ; I'm the author of this framework):

https://github.com/Drombler/drombler-fx/blob/release-0.9/drombler-fx-startup-main/src/main/resources/org/drombler/fx/startup/main/config.properties

回答2:

The error java.lang.ClassNotFoundException: com.sun.glass.ui.win.WinPlatformFactory not found may also occur if the Windows JavaFX version (e.g. from Gluon) was shared (clobbered with) the MacOS JavaFX version.

Seemingly safe, the MacOS JAR seems to be missing WinPlatformFactory.class component in the jar, causing the same error message as the OP.

⁨javafx.graphics⁩.jar!com⁩/sun/glass⁩/⁨ui⁩/⁨win⁩/WinPlatformFactory.class

The fix:

1. Do not use the same directory for all platforms
   --OR--
2. Clobber the MacOS version with the Windows version (Warning: could ultimate suffer an equal and opposite fate although testing does not seem to show this)

来源：https://stackoverflow.com/questions/42418920/javafx-felix-on-windows-winplatformfactory-not-found