Java+SWT实现播放器

Java+SWT实现播放器 资源——jar包

• 遇到了很多挫折，找错历时两天终于解决…要被自己蠢哭，本来在网上各种找jar，但每次到

MediaPlayer mp = new MediaPlayer(media);
报错
java.lang.IllegalStateException: Toolkit not initialized
//逐渐疯狂  网上关于该错误的描述很少

以为是jar包太老旧，在网上各种找jar，害，终究是错了，后来发现JDK1.8自带该jar

• JDK1.8中已有资源Javafx，但为什么建立项目后不可以使用？？
  解决方法：

java.lang.IllegalStateException: Toolkit not initialized的解决

错误源代码

package com.cj.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;

import javax.sound.sampled.AudioInputStream;

import javafx.scene.media.Media;//jfxrt.jar
import javafx.scene.media.MediaPlayer;

import org.jaudiotagger.audio.exceptions.CannotReadException;
import org.jaudiotagger.audio.exceptions.InvalidAudioframeException;
import org.jaudiotagger.audio.exceptions.ReadOnlyFileException;
import org.jaudiotagger.audio.mp3.MP3File;
import org.jaudiotagger.tag.TagException;


public class MusicUtil {
	
	private MusicUtil music;
	public String filepath;
	//private int currentIndex;//当前播放歌曲的索引
	//private int prevSecond;//当前播放歌曲的前一秒--设置滚动条
	//private PlayBean playBean;

	public MusicUtil(){}
	
	public MusicUtil(String filepath){
		this.filepath=filepath;
	}
	public String getFilepath() {
		return filepath;
	}
	public void setFilepath(String filepath) {
		this.filepath = filepath;
	}
	
	
	public void playMusic(){
		music = new MusicUtil("E://Player//sing+picture//music_zhuque.mp3");
		File file = new File(music.filepath);//file音频文件
		System.out.println(file);
		
		MP3File map3File = null;
		try {
			//解析map3文件
			map3File = new MP3File(file);
			System.out.println(map3File);
			
			//获取map3文件的头信息
			URI uri = file.toURI();//获取本地的URI对象
			System.out.println(uri);
			
			
			//加载资源，只加载不干其他事
			Media media = new Media("http://sharefs.ali.kugou.com/202110192159/e1bd6d26ee0e43c347a1ef17f34693ea/G247/M04/06/19/l4cBAF-iicaAN5xoAC_SlWgdr5Y819.mp3");//构造播放器
			System.out.println(media);
			
			MediaPlayer mp = new MediaPlayer(media);
			//播放
			
			//Exception in thread "Thread-1" java.lang.IllegalStateException: Toolkit not initialized

			 //2.开始播放
	        new Thread(){
	            @Override
	            public void run() {
	            	mp.play();
	            }
	        }.start();
		} catch (IOException | TagException | ReadOnlyFileException | CannotReadException
				| InvalidAudioframeException e) {
			e.printStackTrace();
		}
		
	}

	public static void main(String[] args) {
		MusicUtil m = new MusicUtil();
		m.playMusic();
	}
	

}

修改后：
修改内容：继承Application后重写start方法，在start方法中实现播放，而不是自己写的play函数

import java.io.File;
import java.net.URL;

import javafx.application.Application;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.stage.Stage;

public class Play extends Application{
	
	private Play music;
	public String filepath;
	//private int currentIndex;//当前播放歌曲的索引
	//private int prevSecond;//当前播放歌曲的前一秒--设置滚动条
	//private PlayBean playBean;

	public Play(){}
	
	public Play(String filepath){
		this.filepath=filepath;
	}
	public String getFilepath() {
		return filepath;
	}
	public void setFilepath(String filepath) {
		this.filepath = filepath;
	}
	
	
	public static void main(String[] args) throws Exception {
		Play m = new Play();
		m.start(null);
	}

	@Override
	public void start(Stage primaryStage) throws Exception {
		URL url = this.getClass().getClassLoader().getResource("music/music_zhuque.mp3");
		System.out.println(url);
		System.out.println(url.toExternalForm());
		
		Media media = new Media(url.toExternalForm());
		
		MediaPlayer mp = new MediaPlayer(media);
		
		mp.play();
		System.out.println("放了");
		mp.stop();
		System.out.println("stop");
		
		
	}
	

}

• java.lang.IllegalStateException: Toolkit not initialized的解决2
  MeidiaPlay有自己的线程 不能在线程之外使用他 初始化一个JFXPanel会启动JavaFxRuntime
  final JFXPanel fx = new JFXPanel();
• 注意一些加空的判断。。否则报错空指针异常
• 声音进度条的声音值域[0,1]

BorderPane 随窗体变化而改变大小