mp3player.java

一款基于java技术实现的纯jsp在线音乐播放器代码.

package paly;
import java.io.File;
import java.util.Vector;

import javax.media.Manager;
import javax.media.Player;

public class Mp3Player extends Thread{
     private Mp3State mp3;
     private int songlistLength;
     private Vector<String> songlist;
    private Player player = null;
    
    public Mp3Player(Mp3State mp3){
        this.mp3 = mp3;
        songlistLength = mp3.getSonglist().size();
        songlist = mp3.getSonglist();
    }

    public void run(){
        int currentIndex;
        double currentTime = 0;
        double currentDuration = -1;
        
        while((currentIndex = mp3.getCurrentIndex()) <= songlistLength){            
            if(mp3.getTriggerStart() && (currentTime >= currentDuration)){
                try{
                    File currentSong = new File(songlist.elementAt(currentIndex));
                    player = Manager.createRealizedPlayer(currentSong.toURL());
                    mp3.setPlayer(player);
                    if(mp3.getIsPaused()){
                        player.setMediaTime(mp3.getPauseTime());
                    }
                    player.start();
                    System.out.println(currentSong.getName());
                    System.out.print(">>>");
                    mp3.setIsStarted(true);
                    currentDuration = player.getDuration().getSeconds();
                } catch(Exception e){
                    System.out.println(e);
                }
                mp3.setCurrentIndex(currentIndex + 1);
            }
            if(mp3.getIsStarted()){
                currentTime = player.getMediaTime().getSeconds();
            } else {
                currentTime = 0;
                currentDuration = -1;
            }
            try{
                Thread.sleep((int)(Math.random() * 500));
            } catch (InterruptedException e){}
        }
    }
}