JavaFX IllegalArgumentException

Question

我试图做点击时，他们会播放声音的按钮。但我有麻烦。我无法弄清楚，确切地说。这里是我的代码：

import javafx.application.Application; 
import javafx.event.Event; 
import javafx.event.EventHandler; 
import javafx.geometry.Insets; 
import javafx.scene.Scene; 
import javafx.scene.control.Button; 
import javafx.scene.control.ScrollPane; 
import javafx.scene.layout.BorderPane; 
import javafx.scene.layout.HBox; 
import javafx.scene.layout.Priority; 
import javafx.scene.layout.VBox; 
import javafx.stage.Stage; 
import javafx.scene.media.Media; 
import javafx.scene.media.MediaPlayer; 

public class Ms extends Application { 
    @Override 
    public void start(Stage primaryStage) { 

     VBox vbox = new VBox(50); 
     vbox.setOnScroll(null); 

     Button button1 = new Button("1"); 
     Button button2 = new Button("2"); 
     Button button3 = new Button("3"); 
     Button button4 = new Button("4"); 
     Button button5 = new Button("5"); 
     Button button6 = new Button("6"); 
     HBox.setHgrow(button1, Priority.ALWAYS); 
     HBox.setHgrow(button2, Priority.ALWAYS); 
     button1.setPrefSize(367, 70); 
     button2.setPrefSize(367, 70); 
     button3.setPrefSize(367, 70); 
     button4.setPrefSize(367, 70); 
     button5.setPrefSize(367, 70); 
     button6.setPrefSize(367, 70); 
     button1.setOnMouseClicked(new EventHandler<Event>() { 

      @Override 
      public void handle(Event event) { 
       Media hit = new Media("/Users/ErcumentKaya/Desktop/denek.mp3"); 
       MediaPlayer mediaPlayer = new MediaPlayer(hit); 
       mediaPlayer.play(); 

      } 
     }); 
     vbox.setSpacing(0); 
     vbox.getChildren().addAll(button1, button2, button3, button4, button5, button6); 

     ScrollPane scrollPane = new ScrollPane(vbox); 

     BorderPane root = new BorderPane(scrollPane); 
     root.setPadding(new Insets(15)); 

     Scene scene = new Scene(root, 400, 400); 
     primaryStage.setScene(scene); 
     primaryStage.show(); 
    } 

    public static void main(String[] args) { 
     launch(args); 
    } 
} 

我的错误信息是

Exception in thread "JavaFX Application Thread" 
java.lang.IllegalArgumentException: uri.getScheme() == null! uri == 
'/Users/ErcumentKaya/Desktop/denek.mp3' 
     at com.sun.media.jfxmedia.locator.Locator.<init>(Locator.java:211) 
     at javafx.scene.media.Media.<init>(Media.java:391) 
     at Ms$1.handle(Ms.java:42) 
     at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86) 
     at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
     at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
     at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
     at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
     at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
     at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
     at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
     at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
     at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
     at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
     at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
     at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
     at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
     at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
     at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
     at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
     at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54) 
     at javafx.event.Event.fireEvent(Event.java:198) 
     at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3470) 
     at javafx.scene.Scene$ClickGenerator.access$8100(Scene.java:3398) 
     at javafx.scene.Scene$MouseHandler.process(Scene.java:3766) 
     at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485) 
     at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762) 
     at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494) 
     at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:352) 
     at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:275) 
     at java.security.AccessController.doPrivileged(Native Method) 
     at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$355(GlassViewEventHandler.java:388) 
     at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389) 
     at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:387) 
     at com.sun.glass.ui.View.handleMouseEvent(View.java:555) 
     at com.sun.glass.ui.View.notifyMouse(View.java:937) 

Answer 1

这是包括在Javadoc：

public Media(java.lang.String source)

构造一个媒体实例。这是指定媒体源的唯一方法。源代码必须表示有效的URI并且是不可变的。 只支持HTTP，FILE和JAR URL。如果提供的URL无效，则会抛出异常。

该URL必须是file: URL。

Answer 2

这为我工作：

File f = new File("path\\to\\file.mp3"); 
Media hit = new Media(f.toURI().toString()); 

应该有助于避免语法错误用于指定一个本地文件URI字符串值。