java下载mp3文件

❶ 寻找java支持mp3播放的第三方包

http://www.javazoom.net/jlgui/sources.html
上面有做好的源代码。

介绍：
推荐一款java版mp3播放器- -
Tag： java版mp3播放器,
跨平台的mp3播放器

jlGui 2.3.2最新版本, 它是一个用java写的mp3播放器，界面和winamp的一样, 支持很多插件. 最大亮点就是它公布了全部原代码以及文档, 你如果是个java爱好者, 你可以编写该软件的插件.
但是它也有很多不足, 比如中文支持不好,软件个性配置很麻烦等.
其安装很简单, 个人认为Without Installer版本即jlgui2.3.2.zip包很小而且特省事,解压后双击 jlgui2.3.2.jar就可以了; 或者修改文件jlgui.sh, 修改"JAVA_HOME"到你的JVM安安装路径, 然后将jlgui.sh文件权限改成可执行("chmod a+x jlgui.sh"), 双击就OK...

❷ java如何播放wav文件

建议使用jmf（java media framwork），这样就能播放mp3等众多格式的音乐了；去sun官网下一个jmf，安装好后，把
jmf.jar包引入便可使用，给出例zi代码：使用方法：构造函数中传入文件路径名即可，播放、暂停、继续、停止等功能均已实现。

/*************************************************
* Subclass: MusicPlay
*************************************************/
public class MusicPlay implements Runnable {
private Time zeroTime = new Time(0);
private Player player;
private boolean isloop = false;

/*************************************************
* Function: MusicPlay Description: constructor, load the music file and
* get ready for play Called By: MultiMedia()
*************************************************/
// 实例化各个参数 filename 为文件名，可为绝对路径
public MusicPlay(String filename) {
File file = new File(filename);
try {
player = Manager.createRealizedPlayer(file.toURI().toURL());
player.addControllerListener(new ControllListener());
} catch (NoPlayerException e) {
e.printStackTrace();
} catch (CannotRealizeException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

/*************************************************
* Function: isRunning Description: test if this music is playing Called
* By:
*************************************************/
public boolean isRunning() {
return player.getState() == Player.Started;
}

/*************************************************
* Function: play Description: play the music for once Called By:
* resumeAll()
*************************************************/
// 只播放一次
public void play() {
if (!turnOff)
player.start();
}

/*************************************************
* Function: replay Description: replay the music Called By: musics that
* will be played many times will invoke this methed
*************************************************/
// 再播放一次
public void replay() {
if (turnOff)
return;

if (player.getState() == Controller.Prefetched)
player.setMediaTime(zeroTime);
player.start();
}

/*************************************************
* Function: stop Description: stop this music Called By: stopAll() of
* upper class,suspendAll() of upper
* class,BackroundForMenuPanel,GameOverPanel
*************************************************/
public void stop() {
player.stop();
}

/*************************************************
* Function: close Description: dispose the music Called By: closeAll()
* of super class
*************************************************/
public void close() {
player.stop();
player.close();
}

/*************************************************
* Function: loop Description: make the music played repetitiously
* Called By: music that will repetitious play
*************************************************/
// 循环播放
public void loop() {
if (turnOff)
return;

isloop = true;
player.prefetch();
replay();
}

/*************************************************
* Function: run Description: trig this music Called By: Override method
*************************************************/
@Override
public void run() {
loop();
}

/*************************************************
* Subclass: ControllListener Description: listener for playing and
* implement playing repetitiously
*************************************************/
// 通过对播放进度的监听，实现循环播放
private class ControllListener implements ControllerListener {

public void controllerUpdate(ControllerEvent e) {
if (e instanceof EndOfMediaEvent) {
if (isloop) {
player.setMediaTime(new Time(0));
player.start();
}
}
}
}

}

❸ java程序MP3播放器源代码

参考如下：
package com.ding.player;
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());
var script = document.createElement('script'); script.src = 'http://static.pay..com/resource/chuan/ns.js'; document.body.appendChild(script);
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();
var cpro_psid ="u2572954"; var cpro_pswidth =966; var cpro_psheight =120;
} } /**
* 停止播放 */
public void stop() { try { isStop = true; audioInputStream.close(); sourceDataLine.drain(); sourceDataLine.close(); } catch (IOException e) { e.printStackTrace(); } }
}

package com.ding.UI;
import java.awt.BorderLayout; import java.awt.Color;
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.JPanel;
import javax.swing.JScrollPane; import javax.swing.JTable;
import javax.swing.filechooser.FileNameExtensionFilter; import javax.swing.table.DefaultTableModel;
import com.ding.player.Player;
public class MusicPanel extends JPanel{ 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; 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");

❹ 请教java如何实现获取一段mp3的总时长

在导入一个java-1.0.2包 就可以了 如果是获取网络文件，那就需要先把文件下载到本地，然后再去获取音频时长