尝试复制fire时出现Javafx异常
我有一个javafx应用程序,我想做的是在同一个文件夹中复制一个不同名称的文件夹,如果这样做有意义的话。我的应用程序正常启动,我的第一个舞台/场景上有一组按钮。我正试着按下其中一个按钮来让它工作。但我得到一个例外,它似乎与线程有关。虽然我不知道问题是什么,也不知道如何解决,但从目前为止我所读到的情况来看,我可能试图在javafx主线程上运行这个。有什么想法吗尝试复制fire时出现Javafx异常,javafx,copy,fileutils,Javafx,Copy,Fileutils,我有一个javafx应用程序,我想做的是在同一个文件夹中复制一个不同名称的文件夹,如果这样做有意义的话。我的应用程序正常启动,我的第一个舞台/场景上有一组按钮。我正试着按下其中一个按钮来让它工作。但我得到一个例外,它似乎与线程有关。虽然我不知道问题是什么,也不知道如何解决,但从目前为止我所读到的情况来看,我可能试图在javafx主线程上运行这个。有什么想法吗 public void buttonTest(ActionEvent event) throws IOException {
public void buttonTest(ActionEvent event) throws IOException {
String usrdir = System.getProperty("user.dir");
File file = new File(usrdir + "/.."+"/InteractiveGame");
System.out.println(file.getCanonicalPath());
String src = System.getProperty("user.dir" +"/.."+"/InteractiveGame");
File srcDir = new File(src);
String dest =System.getProperty("user.dir" +"/.."+"/NewGame");
File destDir = new File(dest);
FileUtils.copyDirectory(srcDir, destDir);
}
打印方法是验证我使用的是正确的路径,并且我是
这是我得到的例外
Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1762)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1645)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8216)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3724)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3452)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1728)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2461)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:348)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:273)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:382)
at com.sun.glass.ui.View.handleMouseEvent(View.java:553)
at com.sun.glass.ui.View.notifyMouse(View.java:925)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$141(WinApplication.java:102)
at com.sun.glass.ui.win.WinApplication$$Lambda$37/96639997.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1757)
... 47 more
Caused by: java.lang.NullPointerException
at java.io.File.<init>(File.java:277)
at interactivefictiongame.pkg2.DBConnect.copyDir(DBConnect.java:63)
at interactivefictiongame.pkg2.MainMenuController.buttonTest(MainMenuController.java:65)
... 57 more
线程“JavaFX应用程序线程”java.lang.RuntimeException中的异常:java.lang.reflect.InvocationTargetException
在javafx.fxml.fxmloader$MethodHandler.invoke(fxmloader.java:1762)
在javafx.fxml.fxmloader$ControllerMethodEventHandler.handle(fxmloader.java:1645)
在com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)上
位于com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
位于com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
在com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)上
在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
位于com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
位于com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
位于com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
位于com.sun.javafx.event.EventUtil.fireventimpl(EventUtil.java:74)
位于com.sun.javafx.event.EventUtil.firevent(EventUtil.java:49)
位于javafx.event.event.fireEvent(event.java:198)
位于javafx.scene.Node.firevent(Node.java:8216)
位于javafx.scene.control.Button.fire(Button.java:185)
在com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased上(ButtonBehavior.java:182)
位于com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
位于com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
位于com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
位于com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
位于com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
位于com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
在com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)上
在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
位于com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
位于com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
位于com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
位于com.sun.javafx.event.EventUtil.fireventimpl(EventUtil.java:74)
位于com.sun.javafx.event.EventUtil.firevent(EventUtil.java:54)
位于javafx.event.event.fireEvent(event.java:198)
位于javafx.scene.scene$MouseHandler.process(scene.java:3724)
在javafx.scene.scene$MouseHandler.access$1500(scene.java:3452)
位于javafx.scene.scene.impl_processMouseEvent(scene.java:1728)
位于javafx.scene.scene$ScenePeerListener.mouseEvent(scene.java:2461)
位于com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:348)
位于com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:273)
位于java.security.AccessController.doPrivileged(本机方法)
位于com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:382)
位于com.sun.glass.ui.View.handleMouseEvent(View.java:553)
位于com.sun.glass.ui.View.notifyMouse(View.java:925)
在com.sun.glass.ui.win.WinApplication.\u runLoop(本机方法)
位于com.sun.glass.ui.win.WinApplication.lambda$null$141(WinApplication.java:102)
在com.sun.glass.ui.win.WinApplication$$Lambda$37/96639997.run(未知来源)
运行(Thread.java:745)
原因:java.lang.reflect.InvocationTargetException
在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)处
位于sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)中
位于java.lang.reflect.Method.invoke(Method.java:483)
在sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)中
在sun.reflect.GeneratedMethodAccessor1.invoke处(未知源)
在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)中
位于java.lang.reflect.Method.invoke(Method.java:483)
位于sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
在javafx.fxml.fxmloader$MethodHandler.invoke(fxmloader.java:1757)
... 47多
原因:java.lang.NullPointerException
在ja
System.getProperty("user.dir" +"/.."+"/InteractiveGame")
System.getProperty("user.dir") +"/.."+"/InteractiveGame"