问题描述
- java编的音乐播放器，只能播放部分MP3文件
-
import java.io.File;
import java.io.IOException;import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;public class Player {
private String path;//文件路径
private String name;//文件名称
private AudioFormat audioFormat;//播放格式
private AudioInputStream audioInputStream;//音乐播放输入流
private SourceDataLine sourceDataLine;// 播放设备
private boolean isStop = false;// 播放停止标志
/**
* 创建对象时需要传入播放路径及文件名称
* @param path
* @param name
/
public Player(String path ,String name) {
this.path = path;
this.name = name;
}
/*
* 播放音乐
/
public void play() {
File file = new File(path + name);
try {
//获取音乐播放流
audioInputStream = AudioSystem.getAudioInputStream(file);
//获取播放格式
audioFormat = audioInputStream.getFormat();
/*System.out.println("取样率："+ audioFormat.getSampleRate());
Map map = audioFormat.properties();
Iterator it = map.entrySet().iterator();
while(it.hasNext()) {
Map.Entry m = (Entry) it.next();
System.out.println(m.getKey()+":"+m.getValue());
}/
//其它格式音乐文件处理
if(audioFormat.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
audioFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, audioFormat.getSampleRate(), 16, audioFormat.getChannels(), audioFormat.getChannels()*2, audioFormat.getSampleRate(), audioFormat.isBigEndian());
audioInputStream = AudioSystem.getAudioInputStream(audioFormat, audioInputStream);}
//打开输出设备 DataLine.Info dataLineInfo = new DataLine.Info(SourceDataLine.class, audioFormat,AudioSystem.NOT_SPECIFIED); sourceDataLine = (SourceDataLine) AudioSystem.getLine(dataLineInfo); sourceDataLine.open(audioFormat); sourceDataLine.start(); //启动播放线程 new Thread() { @Override public void run() { try { int n = 0; byte tempBuffer[] = new byte[320]; while(n != -1) { //停止播放入口，如果isStop被置为真，结束播放 if(isStop) break; //将音乐输入流的数据读入tempBuffer缓存 n = audioInputStream.read(tempBuffer,0 , tempBuffer.length); if(n>0) { //将缓存数据写入播放设备，开始播放 sourceDataLine.write(tempBuffer, 0, n); } } audioInputStream.close(); sourceDataLine.drain(); sourceDataLine.close(); } catch (IOException e) { e.printStackTrace(); throw new RuntimeException(); } } }.start(); } catch (Exception e) { e.printStackTrace(); System.exit(0); throw new RuntimeException(); } } /** * 停止播放 */ public void stop() { try { isStop = true; audioInputStream.close(); sourceDataLine.drain(); sourceDataLine.close(); } catch (IOException e) { e.printStackTrace(); } }}
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.Vector;import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.table.DefaultTableModel;import com.zy.play.Player;
public class MusicPanel extends JFrame{
private JButton add, playbtn, stopbtn, deletebtn, deleteAllbtn, upbtn, downbtn;//播放、停止、删除、删除全部、向上。向下按钮 private JTable table; //歌曲信息表 private Player player; private JPanel jpl1,jpl2; public MusicPanel() { initCompont(); } /** * 初始化界面 */ private void initCompont() { //各个按钮赋初始值 add = new JButton("导入"); playbtn = new JButton("试听"); stopbtn = new JButton("停止"); deletebtn = new JButton("单曲删除"); deleteAllbtn = new JButton("全部删除"); upbtn = new JButton("上一首"); downbtn = new JButton("下一首"); //导入按钮点击设置 add.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { addFile(); } }); //试听按钮点击设置 playbtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if(player!=null) { player.stop(); player = null; } int rowNum = table.getSelectedRow(); if(rowNum != -1) { player = new Player((String)table.getValueAt(rowNum, 1) + "\" ,(String)table.getValueAt(rowNum, 0)); System.out.println((String)table.getValueAt(rowNum, 1)+"\"+(String)table.getValueAt(rowNum, 0)); player.play(); } } }); //停止按钮点击设置 stopbtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if(player != null) { player.stop(); player = null; } } }); //单曲删除按钮点击设置 deletebtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int rowNum = table.getSelectedRow(); if(rowNum != -1) { ((DefaultTableModel)table.getModel()).removeRow(rowNum); } } }); //删除全部按钮点击设置 deleteAllbtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { for(int i = table.getRowCount()-1; i>=0; i--) { ((DefaultTableModel)table.getModel()).removeRow(i); } } }); downbtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int n = table.getSelectedRow() + 1; if(n < table.getRowCount()) { table.setRowSelectionInterval(n, n); } } }); upbtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int n = table.getSelectedRow() - 1; if(n < -1) { n = table.getRowCount() - 1; } if(n >= 0) { table.setRowSelectionInterval(n, n); } } }); //添加各个按钮 jpl1= new JPanel(new GridLayout(1,7)); jpl1.add(add); jpl1.add(playbtn); jpl1.add(stopbtn); jpl1.add(deletebtn); jpl1.add(deleteAllbtn); jpl1.add(upbtn); jpl1.add(downbtn); //this.setLayout(new BorderLayout()); this.add(jpl1,"North"); Vector<String> tableContent = new Vector<String>(); //表格内容 Vector<String> columnName = new Vector<String>();//歌曲信息表格列名称 columnName.add("歌曲名称"); columnName.add("存放路径"); //设置table table = new JTable(tableContent, columnName); table.setSelectionBackground(Color.blue); table.setSelectionForeground(Color.LIGHT_GRAY); jpl2=new JPanel(); jpl2.add(new JScrollPane(table), BorderLayout.CENTER); this.add(jpl2,"Center"); this.setSize(650, 210); this.setVisible(true); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } /** * 添加文件 */ private void addFile() { JFileChooser fc = new JFileChooser(); //设置选入文件类型 FileNameExtensionFilter filter = new FileNameExtensionFilter("mp3 or wav file", "mp3","wav","MP3","WAV"); fc.setFileFilter(filter); fc.setFileSelectionMode(JFileChooser.FILES_ONLY);//设置只选择文件 fc.setMultiSelectionEnabled(true);//设置选择多个文件 int intRetVal = fc.showDialog(this, "打开"); //获取文件并添加到table if(intRetVal == JFileChooser.APPROVE_OPTION) { File[] file = fc.getSelectedFiles(); String name; for(File var : file) { name = var.getName().toLowerCase(); if( name.endsWith(".mp3")|| name.endsWith(".wav")) { this.addMusicItem(var.getName() , var.getParentFile().getAbsolutePath()); } } } } /** * table的行中添加音乐文件名称name,音乐文件路径path * @param name * @param path */ private void addMusicItem(String name, String path ) { Vector<String> rowData = new Vector<String>(); rowData.add(name); rowData.add(path); //rowData.add(time); DefaultTableModel tabMod= (DefaultTableModel) table.getModel(); tabMod.addRow(rowData); } public static void main(String[] args) { MusicPanel test=new MusicPanel(); }}
报错：java.io.IOException: Resetting to invalid mark
解决方案
一些文件格式不正确，虽然它们有mp3的扩展名，但是不是mp3的。
参考：
http://stackoverflow.com/questions/17823542/conflicting-jar-methods
http://stackoverflow.com/questions/10046136/error-while-playing-some-mp3s-using-javazoom-basicplayer-classes
解决方案二：
想要播放更多格式，请参考JJMPEG。