JavaFX和“MediaException：UNKNOWN ……无法创建播放器！”

好吧，所以我需要编写一个或多或少简单的video播放器，我选择了JavaFX来完成这项任务。 直到现在我已经写了一个非常简单（并且应该工作）的应用程序，但它不断抛出同样的错误：

Exception in Application start method Exception in thread "main" java.lang.RuntimeException: Exception in Application start method at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:875) at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$147(LauncherImpl.java:157) at com.sun.javafx.application.LauncherImpl$$Lambda$1/1573468.run(Unknown Source) at java.lang.Thread.run(Thread.java:745) Caused by: MediaException: UNKNOWN : com.sun.media.jfxmedia.MediaException: Could not create player! : com.sun.media.jfxmedia.MediaException: Could not create player! at javafx.scene.media.MediaException.exceptionToMediaException(MediaException.java:146) at javafx.scene.media.MediaPlayer.init(MediaPlayer.java:511) at javafx.scene.media.MediaPlayer.(MediaPlayer.java:414) at player.MoviePlayer.start(MoviePlayer.java:23) at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$153(LauncherImpl.java:821) at com.sun.javafx.application.LauncherImpl$$Lambda$55/17730007.run(Unknown Source) at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$166(PlatformImpl.java:323) at com.sun.javafx.application.PlatformImpl$$Lambda$50/11354414.run(Unknown Source) at com.sun.javafx.application.PlatformImpl.lambda$null$164(PlatformImpl.java:292) at com.sun.javafx.application.PlatformImpl$$Lambda$53/4845991.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at com.sun.javafx.application.PlatformImpl.lambda$runLater$165(PlatformImpl.java:291) at com.sun.javafx.application.PlatformImpl$$Lambda$51/26970262.run(Unknown Source) at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method) at com.sun.glass.ui.gtk.GtkApplication.lambda$null$45(GtkApplication.java:126) at com.sun.glass.ui.gtk.GtkApplication$$Lambda$43/4959060.run(Unknown Source) ... 1 more Caused by: com.sun.media.jfxmedia.MediaException: Could not create player! at com.sun.media.jfxmediaimpl.NativeMediaManager.getPlayer(NativeMediaManager.java:222) at com.sun.media.jfxmedia.MediaManager.getPlayer(MediaManager.java:104) at javafx.scene.media.MediaPlayer.init(MediaPlayer.java:467) ... 16 more Process finished with exit code 1 

我刚刚开始使用JavaFX进行冒险，在发布此处之前，我已经阅读了有关此问题的类似主题，并且大多数时候问题出在媒体编码类型上。 所以首先我尝试从Handbrake（双通.mp4）播放输出，但它没有奏效。 然后我从HERE下载了一个样本.flv文件。 它没有用，所以我尝试了一个mp3文件，但问题仍然存在。 我甚至试图在Windows和Linux上编译它，但没有任何效果。

为清楚起见，代码如下所示：

 package player; import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; 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 MoviePlayer extends Application { public static void main(String[] args) { launch(args); } @Override public void start(Stage stage) throws Exception { Group root = new Group(); Media media = new Media("file:///home/winged/IdeaProjects/MoviePlayer/video/barsandtone.flv"); MediaPlayer player = new MediaPlayer(media); MediaView view = new MediaView(player); player.setAutoPlay(true); root.getChildren().add(view); Scene scene = new Scene(root, 400, 400, Color.BLACK); stage.setScene(scene); stage.show(); player.play(); } } 

Answer 1

好吧，最后我找到了问题的原因 – 我通过video路径文件的方式是错误的：

而不是使用Media media = new Media("file:///home/winged/IdeaProjects/MoviePlayer/video/barsandtone.flv");

我应该使用Media media = new Media(new File("file:///home/winged/IdeaProjects/MoviePlayer/video/barsandtone.flv").toURI().toString());