java音乐播放器实现代码

本文实例为大家分享了java音乐播放器的具体代码，供大家参考，具体内容如下

这个是源码结构介绍

这个是界面，有点简陋，见笑了，但是基本上的东西都有了，没办法，没有美工的程序写的界面

直接上源代码Player.java

package com.service; import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.Random; import javax.sound.sampled.*;import javax.swing.jslider;import javax.swing.JTable;import com.list.MusicList;import com.list.ThreadList;import com.list.ViewList;import com.model.Model;import com.model.Music;import com.view.View; public class Player extends Thread{  private Player p; private long time = 0;  Object lock = new Object();//一个空的对象,没什么意义  private boolean paused = false;// 暂停 继续   public boolean isPaused() { return paused; } public void setPaused(boolean paused) { this.paused = paused; }  private JSlider jSliderPlayProgress;//播放进度条 private boolean over = false;//开始 结束  //是否自动播放下一曲 private boolean isNext=true;   private Music music;//音乐   AudioInputStream din = null; SourceDataLine line=null;  private FloatControl volume = null; private JSlider jSliderVolume;   public JSlider getjSliderVolume() { return jSliderVolume; } public void setjSliderVolume(JSlider jSliderVolume) { this.jSliderVolume = jSliderVolume;   } public Player(JSlider jSliderVolume,JSlider jSliderPlayProgress) { super(); this.jSliderVolume = jSliderVolume; this.jSliderPlayProgress=jSliderPlayProgress; } public Music getMusic() { return music; } public void setMusic(Music music) { this.music = music; }  public FloatControl getVolume(){  return volume; }   //播放音乐 public void run(){  AudioInputStream in=null;  try {    File file = new File(music.getPath());   //播放不了的歌曲，直接下一首,并且在音乐列表中删除  try {   in = AudiOSystem.getAudioInputStream(file);  } catch (Exception e) {  //删除有点小问题  MusicList.getList().remove(music.getId());    ViewList.getList().get(0).getJt().setModel(new Model());      nextmusic();  }    AudioFORMat baseFormat = in.getFormat();  AudioFormat decodedFormat = new AudioFormat(   AudioFormat.Encoding.PCM_SIGNED,   baseFormat.getSampleRate(), 16, baseFormat.getChannels(),   baseFormat.getChannels() * 2, baseFormat.getSampleRate(),   false);  if(baseFormat.getEncoding()==AudioFormat.Encoding.PCM_UNSIGNED || baseFormat.getEncoding()==AudioFormat.Encoding.ULAW ||   baseFormat.getEncoding()==AudioFormat.Encoding.ALAW || baseFormat.getEncoding()==AudioFormat.Encoding.PCM_SIGNED){    time=(file.length()*8000000)/((int)(decodedFormat.getSampleRate()*baseFormat.getSampleSizeInBits()));  }else{   int bitrate=0;   if(baseFormat.properties().get("bitrate")!=null){    //取得播放速度(单位位每秒)    bitrate=(int)((Integer)(baseFormat.properties().get("bitrate")));    if(bitrate!=0)    time=(file.length()*8000000)/bitrate;   }     }      din = AudioSystem.getAudioInputStream(decodedFormat, in);  DataLine.Info info = new DataLine.Info(SourceDataLine.class, decodedFormat);  line = (SourceDataLine) AudioSystem.getLine(info);  line.open();  setVolume();  jSliderPlayProgress.setMaximum((int)time);  jSliderPlayProgress.setValue(0);  if(line!=null){  line.open(decodedFormat);  byte[] data = new byte[4096];  int nBytesRead;    synchronized (lock) {  while ((nBytesRead = din.read(data, 0, data.length)) != -1) {   while (paused) {   if(line.isRunning()) {    line.stop();    System.out.println("暂停");   }   try {    lock.wait();    System.out.println("等待");   }   catch(InterruptedException e) {   }   }   if(!line.isRunning()&&!over) {   System.out.println("开始播放");   line.start();      }      if (over&&line.isRunning()) {   System.out.println("停止播放");   jSliderPlayProgress.setValue(0);   isNext=false;   line.drain();   line.stop();   line.close();   }      jSliderPlayProgress.setValue((int)line.getMicrosecondPosition());   line.write(data, 0, nBytesRead);  }   //根据播放模式选择下一首歌  nextmusic();  }   }  } catch(Exception e) {  e.printStackTrace(); } finally {  if(din != null) {  try { din.close(); } catch(IOException e) { }  } } }  //设置播放器滚动条 public void setVolume() { if(line!=null) {  if(line.isControlSupported(FloatControl.Type.MASTER_GAIN))  {  jSliderVolume.setEnabled(true);  volume= (FloatControl)line.getControl( FloatControl.Type.MASTER_GAIN );  jSliderVolume.setMinimum((int)volume.getMinimum());  jSliderVolume.setMaximum((int)volume.getMaximum());  //jSliderVolume.setValue((int)(volume.getMinimum()+(4*(volume.getMaximum()-volume.getMinimum()))/5));  volume.setValue((float)(volume.getMinimum()+(4*(volume.getMaximum()-volume.getMinimum()))/5));  } } else {  volume=null;  jSliderVolume.setEnabled(false); }  } private void nextmusic() { String mode=Setting.getMode(); if (isNext&&!mode.equals("one")) {//单曲播放就不执行  int nextid=0;//将要播放的id  int currentid=Integer.parseInt(this.music.getId());  System.out.println(mode);  if (mode.equals("default")&&(currentid==MusicList.getList().size()-1)){  return;  }    if (mode.equals("rand")) {   Random random = new Random();   nextid=Math.abs(random.nextInt())%MusicList.getList().size();  }else if (mode.equals("onecircle")) {  nextid=currentid;  }else if (mode.equals("default")&&!(currentid==MusicList.getList().size()-1)) {   nextid=currentid+1;  }else if (mode.equals("morecircle")) {    nextid=(currentid==MusicList.getList().size()-1)?0:currentid+1;  }  JTable jTable=ViewList.getList().get(0).getJt();  if(nextid==0){//第一个    jTable.setRowSelectionInterval(0,0);    }else {   jTable.setRowSelectionInterval(nextid-1,nextid);   }   this.stopplay();   ThreadList.getList().clear();   p=new Player(jSliderVolume,jSliderPlayProgress);   p.setMusic(MusicList.getList().get(nextid));   ThreadList.getList().add(p);   p.start(); } }  //开始 public void startplay(){ over=false; }   //停止  public void stopplay(){ over=true; }   // 暂停 public void userPressedPause() { paused = true; }  //继续 public void userPressedPlay() {  synchronized(lock) {   paused = false;   lock.notifyAll(); } }  public void Pause(){ if (paused) {  synchronized(lock) {   paused = false;   lock.notifyAll();   } }else{  paused = true; }  }   }