Question

我无法使JavaFX媒体播放器正常工作。我正进入（状态一条错误消息，提示java.lang.reflect.InvocationTargetException。我研究了此错误消息，并找到一条帖子，说我正在调用2个不同的类同名。但是我找不到它们是什么类。

有人对此有任何经验吗？我认为该消息仅与JavaFx API一起使用。这是代码：

import java.io.File;
import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.beans.property.DoubleProperty;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class Broadcaster extends Application 
{

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



@Override
  public void start(Stage primaryStage) {
    String workingDir = System.getProperty("C:/Users/Tito/Desktop");
    final File f = new File(workingDir, "Jeremy.wmv");

    final Media m = new Media(f.toURI().toString());
    final MediaPlayer mp = new MediaPlayer(m);
    final MediaView mv = new MediaView(mp);

    final DoubleProperty width = mv.fitWidthProperty();
    final DoubleProperty height = mv.fitHeightProperty();

    width.bind(Bindings.selectDouble(mv.sceneProperty(), "width"));
    height.bind(Bindings.selectDouble(mv.sceneProperty(), "height")); 



    mv.setPreserveRatio(true);

    StackPane root = new StackPane();
    root.getChildren().add(mv);

    final Scene scene = new Scene(root, 960, 540);
    scene.setFill(Color.BLACK);

    primaryStage.setScene(scene);
    primaryStage.setTitle("Full Screen Video Player");
    primaryStage.setFullScreen(true);
    primaryStage.show();

    mp.play();
  }
}

// This code was found on 
http://www.java2s.com/Code/Java/JavaFX/FullScreenVideoPlayer.htm

Answer 1

问题是我的文件位置。由于某种原因，代码没有寻找字符串workingDir = System.getProperty（“ C：/ Users / Tito / Desktop”）中的文件；在C：\ Users \ Tito \ eclipse-workspace \ Broadcast中寻找它。我必须找出为什么。当我将媒体文件移动到C：\ Users \ Tito \ eclipse-workspace \ Broadcast时，它播放了音频，而不是视频。

为什么我的JavaFX代码会收到InvocationTargetException？

1 个答案: