如何用java做一个音乐播放器？
首先下载播放mp3的包，比如mp3spi1.9.4.jar。在工程中添加这个包。
播放器演示代码如下
package com.test.audio;
import java.io.File;
import java.awt.BorderLayout;
import java.awt.FileDialog;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.List;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.MenuShortcut;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
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 MusicPlayer extends Frame {
/**
*
*/
private static final long serialVersionUID = -2605658046194599045L;
boolean isStop = true;// 控制播放线程
boolean hasStop = true;// 播放线程状态
String filepath;// 播放文件目录
String filename;// 播放文件名称
AudioInputStream audioInputStream;// 文件流
AudioFormat audioFormat;// 文件格式
SourceDataLine sourceDataLine;// 输出设备
List list;// 文件列表
Label labelfilepath;//播放目录显示标签
Label labelfilename;//播放文件显示标签
public MusicPlayer() {
// 设置窗体属性
setLayout(new BorderLayout());
setTitle(“MP3 Music Player”);
setSize(350, 370);
// 建立菜单栏
MenuBar menubar = new MenuBar();
Menu menufile = new Menu(“File”);
MenuItem menuopen = new MenuItem(“Open”, new MenuShortcut(KeyEvent.VK_O));
menufile.add(menuopen);
menufile.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
open();
}
});
menubar.add(menufile);
setMenuBar(menubar);
// 文件列表
list = new List(10);
list.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 双击时处理
if (e.getClickCount() == 2) {
// 播放选中的文件
filename = list.getSelectedItem();
play();
}
}
});
add(list, “Center”);
// 信息显示
Panel panel = new Panel(new GridLayout(2, 1));
labelfilepath = new Label(“Dir：”);
labelfilename = new Label(“File：”);
panel.add(labelfilepath);
panel.add(labelfilename);
add(panel, “North”);
// 注册窗体关闭事件
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
setVisible(true);
}
// 打开
private void open() {
FileDialog dialog = new FileDialog(this, “Open”, 0);
dialog.setVisible(true);
filepath = dialog.getDirectory();
if (filepath != null) {
labelfilepath.setText(“Dir：” + filepath);
// 显示文件列表
list.removeAll();
File filedir = new File(filepath);
File[] filelist = filedir.listFiles();
for (File file : filelist) {
String filename = file.getName().toLowerCase();
if (filename.endsWith(“.mp3”) || filename.endsWith(“.wav”)) {
list.add(filename);
}
}
}
}
// 播放
private void play() {
try {
isStop = true;// 停止播放线程
// 等待播放线程停止
System.out.print(“Start：” + filename);
while (!hasStop) {
System.out.print(“.”);
try {
Thread.sleep(10);
} catch (Exception e) {
}
}
System.out.println(“”);
File file = new File(filepath + filename);
labelfilename.setText(“Playing：” + filename);
// 取得文件输入流
audioInputStream = AudioSystem.getAudioInputStream(file);
audioFormat = audioInputStream.getFormat();
// 转换mp3文件编码
if (audioFormat.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
audioFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
audioFormat.getSampleRate(), 16, audioFormat
.getChannels(), audioFormat.getChannels() * 2,
audioFormat.getSampleRate(), false);
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();
// 创建独立线程进行播放
isStop = false;
Thread playThread = new Thread(new PlayThread());
playThread.start();
} catch (Exception e) {
e.printStackTrace();
}
}
class PlayThread extends Thread {
byte tempBuffer[] = new byte[320];
public void run() {
try {
int cnt;
hasStop = false;
// 读取数据到缓存数据
while ((cnt = audioInputStream.read(tempBuffer, 0,
tempBuffer.length)) != -1) {
if (isStop)
break;
if (cnt 0) {
// 写入缓存数据
sourceDataLine.write(tempBuffer, 0, cnt);
}
}
// Block等待临时数据被输出为空
sourceDataLine.drain();
sourceDataLine.close();
hasStop = true;
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
}
}
public static void main(String args[]) {
new MusicPlayer();
}
}
如何用Java来编写一个音乐播放器
首先要在环境电脑中安装下JMF环境，才能引入javax.sound.sampled.*这个包，一下是用过的代码
package TheMusic;
import java.io.*;
import javax.sound.sampled.*;
public class Music {
public static void main(String[] args) {
// TODO Auto-generated method stub
//修改你的音乐文件路径就OK了
AePlayWave apw=new AePlayWave(“突然好想你.wav”);
apw.start();
}
}
在程序中实例化这个类，启动线程，实例化的时候参照Test修改路径就OK播放声音的类
Java代码
public class AePlayWave extends Thread {
private String filename;
public AePlayWave(String wavfile) {
filename = wavfile;
}
public void run() {
File soundFile = new File(filename);
AudioInputStream audioInputStream = null;
try {
audioInputStream = AudioSystem.getAudioInputStream(soundFile);
} catch (Exception e1) {
e1.printStackTrace();
return;
}
AudioFormat format = audioInputStream.getFormat();
SourceDataLine auline = null;
DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
try {
auline = (SourceDataLine) AudioSystem.getLine(info);
auline.open(format);
} catch (Exception e) {
e.printStackTrace();
return;
}
auline.start();
int nBytesRead = 0;
byte[] abData = new byte[512];
try {
while (nBytesRead != -1) {
nBytesRead = audioInputStream.read(abData, 0, abData.length);
if (nBytesRead = 0)
auline.write(abData, 0, nBytesRead);
}
} catch (IOException e) {
e.printStackTrace();
return;
} finally {
auline.drain();
auline.close();
}
}
}
用java做音视频播放器
我做过一个MP3的..给你看看.
package music;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.media.bean.playerbean.*; //这个包要用到JMF
public class MP3 extends JFrame implements Runnable {
public JLabel shijian;
private JSlider sldDiameter;
public MediaPlayer soumd1;
public JButton playSound, loopSound, stopsound;
public JButton tjian, shanc, baocun, duqu;
public JPanel jp1, jp2, jp3, jp4;
public JList jl;
int zongmiao=0;
public Vector vector, mingcheng;
boolean fo = false, geshi = false;
JLabel jl1, jl2, sj1, sj2;
JTextField jt1, jt2;
JButton queding, xiugai;
int zong = 0;
int a = 0, b = 0, you = 1,mm=0;
int fenzhong, miaozhong;
public MP3() {
super(“java简单音乐播放器“);
soumd1 = new MediaPlayer();
Container c = getContentPane();
c.setLayout(new FlowLayout());
mingcheng = new Vector();
jp1 = new JPanel();
shijian = new JLabel();
jp1.add(shijian);
c.add(jp1);
playSound = new JButton(“开始播放“);
loopSound = new JButton(“循环播放“);
stopsound = new JButton(“停止播放“);
jp2 = new JPanel();
jp2.add(playSound);
jp2.add(loopSound);
jp2.add(stopsound);
c.add(jp2);
jp4 = new JPanel();
sj1 = new JLabel();
sj2 = new JLabel();
sldDiameter = new JSlider(SwingConstants.HORIZONTAL, 0, 100, 0);
sldDiameter.setMajorTickSpacing(1);
sldDiameter.setPaintTicks(true);
jp4.add(sj1);
jp4.add(sldDiameter);
jp4.add(sj2);
c.add(jp4);
vector = new Vector();
jl = new JList(mingcheng);
jl.setVisibleRowCount(5);
jl.setFixedCellHeight(40);
jl.setFixedCellWidth(265);
jl.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
c.add(new JScrollPane(jl));
tjian = new JButton(“添加“);
shanc = new JButton(“删除“);
duqu = new JButton(“读取“);
baocun = new JButto
摘选自网上，希望对你有帮助。
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