javafx - 如何使用 javafx 制作视频播放器?
问题描述
大家好,我正在尝试使用 javafx 制作一个简单的视频播放器,然后稍后使用场景生成器添加一些控件,但是我什至无法播放简单的视频,我一直收到错误消息
Exception in Application start method
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.IllegalAccessError: class com.sun.media.jfxmediaimpl.NativeMediaManager (in unnamed module @0x22fda225) cannot access class com.sun.glass.utils.NativeLibLoader (in module javafx.graphics) because module javafx.graphics does not export com.sun.glass.utils to unnamed module @0x22fda225
at com.sun.media.jfxmediaimpl.NativeMediaManager.lambda$new$0(NativeMediaManager.java:110)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
at com.sun.media.jfxmediaimpl.NativeMediaManager.<init>(NativeMediaManager.java:107)
at com.sun.media.jfxmediaimpl.NativeMediaManager$NativeMediaManagerInitializer.<clinit>(NativeMediaManager.java:78)
at com.sun.media.jfxmediaimpl.NativeMediaManager.getDefaultInstance(NativeMediaManager.java:90)
at com.sun.media.jfxmedia.MediaManager.canPlayProtocol(MediaManager.java:78)
at com.sun.media.jfxmedia.locator.Locator.<init>(Locator.java:239)
at javafx.scene.media.Media.<init>(Media.java:393)
at javaapplication3.JavaApplication3.start(JavaApplication3.java:45)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
Exception running application javaapplication3.JavaApplication3
C:\Users\adamk\OneDrive\Documents\NetBeansProjects\JavaApplication3\nbproject\build-impl.xml:1341: The following error occurred while executing this line:
C:\Users\adamk\OneDrive\Documents\NetBeansProjects\JavaApplication3\nbproject\build-impl.xml:936: Java returned: 1
BUILD FAILED (total time: 1 second)
我确保路径正确且一切正常,但它仍然无法播放。有人可以帮忙吗?谢谢 !!!
/*
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* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication3;
/**
*
* @author adamk
*/
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
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.Group;
import javafx.scene.media.MediaView;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import java.io.File;
public class JavaApplication3 extends Application
{
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception {
String path = "C:\\1.mp4";
//Instantiating Media class
Media media = new Media(new File(path).toURI().toString());
//Instantiating MediaPlayer class
MediaPlayer mediaPlayer = new MediaPlayer(media);
//Instantiating MediaView class
MediaView mediaView = new MediaView(mediaPlayer);
//by setting this property to true, the Video will be played
mediaPlayer.setAutoPlay(true);
//setting group and scene
Group root = new Group();
root.getChildren().add(mediaView);
Scene scene = new Scene(root,500,400);
primaryStage.setScene(scene);
primaryStage.setTitle("Playing video");
primaryStage.show();
}
}
解决方案
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