基于java的音乐播放器的设计源代码+实验报告.docx

1、基于java的音乐播放器的设计源代码+实验报告主类MUSICPLAYER类：import java.util.*;import javax.swing.JSlider;import java.awt.BorderLayout;import java.awt.FlowLayout;import java.awt.Point;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent

2、;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.Serializable;import javax.media.Co

3、ntrollerEvent;import javax.media.ControllerListener;import javax.media.EndOfMediaEvent;import javax.media.Manager;import javax.media.MediaLocator;import javax.media.NoPlayerException;import javax.media.Player;import javax.media.PrefetchCompleteEvent;import javax.media.Time;import javax.swing.ButtonG

4、roup;import javax.swing.DefaultListModel;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JFileChooser;import javax.swing.JFrame;import javax.swing.JList;import javax.swing.JMenu;import javax.swing.JMenuBar;import javax.swing.JMenuItem;import javax.swing.JOptionPane;import

5、javax.swing.JPanel;import javax.swing.JRadioButtonMenuItem;import javax.swing.JScrollBar;import javax.swing.JScrollPane;import javax.swing.filechooser.FileNameExtensionFilter;public class MusicPlayer implements ActionListener, Serializable,ControllerListener private static final long serialVersionUI

6、D = 1L; private JFrame frame = null; private JPanel controlPanel = null; private JButton btnPlay = null; private JButton btnPre = null; private JButton btnNext = null; private JScrollPane listPane = null; private JList list = null; private DefaultListModel listModel = null; private JMenuBar menubar

7、= null; private JMenu menuFile = null, menuAbout = null, menuMode = null; private JMenuItem itemOpen, itemOpens, itemExit, itemAbout; private JRadioButtonMenuItem itemSingle, itemSequence ,itemRandom; private ListItem currentItem = null; private static Player player = null; private boolean isPause =

8、 false; private int mode; private int currentIndex; private ImageIcon iconPlay = new ImageIcon(d:1.jpg); private ImageIcon iconPre = new ImageIcon(d:3.jpg); private ImageIcon iconNext = new ImageIcon(d:2.jpg); private ImageIcon iconPause = new ImageIcon(d:4.jpg); public static void main(String args)

9、 new MusicPlayer(); public MusicPlayer() init(); public void init() frame = new JFrame(); frame.setTitle(音乐播放器); frame.setSize(400, 300); frame.setResizable(false); frame.setLocationRelativeTo(null); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); menubar = new JMenuBar(); menuFile = new JMenu

10、(文件); menuAbout = new JMenu(关于); menuMode = new JMenu(播放模式); itemOpen = new JMenuItem(添加文件); itemOpens = new JMenuItem(添加文件夹); itemExit = new JMenuItem(退出); itemAbout = new JMenuItem(关于); itemOpen.addActionListener(this); itemOpens.addActionListener(this); itemExit.addActionListener(this); itemAbout

11、.addActionListener(this); itemSequence = new JRadioButtonMenuItem(顺序播放); itemSequence.setSelected(true); itemSingle = new JRadioButtonMenuItem(单曲循环); itemSequence.addActionListener(this); itemRandom = new JRadioButtonMenuItem(随机播放); itemRandom.addActionListener(this); itemSingle.addActionListener(th

12、is); ButtonGroup bg = new ButtonGroup(); bg.add(itemRandom); bg.add(itemSequence); bg.add(itemSingle); menuFile.add(itemOpen); menuFile.add(itemOpens); menuFile.add(itemExit); menuAbout.add(itemAbout); menuMode.add(itemSequence); menuMode.add(itemSingle); menuMode.add(itemRandom); menubar.add(menuFi

13、le); menubar.add(menuAbout); menubar.add(menuMode); frame.setJMenuBar(menubar); frame.setLayout(new BorderLayout(); controlPanel = new JPanel(); controlPanel.setLayout(new FlowLayout(); btnPlay = new JButton(iconPlay); btnPre = new JButton(iconPre); btnNext = new JButton(iconNext); btnPlay.addAction

14、Listener(this); btnPre.addActionListener(this); btnNext.addActionListener(this); controlPanel.add(btnPre); controlPanel.add(btnPlay); controlPanel.add(btnNext); listPane = new JScrollPane(); listModel = load(); list = new JList(listModel); if (list.getSelectedIndex() = -1 & listModel.size() 0) curre

15、ntItem = (ListItem) listModel.get(0); list.setSelectedIndex(0); currentIndex=0; listPane.getViewport().add(list); list.addMouseListener(new MouseAdapter() public void mouseClicked(MouseEvent e) if (e.getClickCount() = 2) if(player!=null) player.close(); btnPlay.setIcon(iconPlay); currentIndex = list

16、.locationToIndex(e.getPoint(); currentItem = (ListItem) listModel.get(currentIndex); list.setSelectedIndex(currentIndex); play(); ); frame.setLayout(new BorderLayout(); frame.add(controlPanel, BorderLayout.NORTH); frame.add(listPane, BorderLayout.CENTER); frame.setVisible(true); ; public void action

17、Performed(ActionEvent e) if (e.getSource() = itemOpen) / add files JFileChooser jfc = new JFileChooser(); FileNameExtensionFilter filter = new FileNameExtensionFilter(音乐文件, mp3, wav); jfc.setFileFilter(filter); jfc.setFileSelectionMode(JFileChooser.FILES_ONLY); jfc.setMultiSelectionEnabled(true); if

18、 (jfc.showOpenDialog(frame) = JFileChooser.APPROVE_OPTION) File files = jfc.getSelectedFiles(); for (File f : files) ListItem item = new ListItem(f.getName(), f.getAbsolutePath(); listModel.addElement(item); else if (e.getSource() = itemOpens) / add files in a directory JFileChooser jfc = new JFileC

19、hooser(); jfc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY); if (jfc.showOpenDialog(frame) = JFileChooser.APPROVE_OPTION) File directory = jfc.getSelectedFile(); File files = directory.listFiles(new java.io.FileFilter() public boolean accept(File f) if (f.getName().toLowerCase().endsWith(.mp3)

20、| f.getName().toLowerCase().endsWith(.wav) return true; return false; ); for (File file : files) ListItem item = new ListItem(file.getName(), file.getAbsolutePath(); listModel.addElement(item); save(listModel); else if (e.getSource() = itemExit) System.exit(0); else if (e.getSource() = itemAbout) JO

21、ptionPane.showMessageDialog(frame, 作者:陆鑫); else if (e.getSource() = btnPlay) / play or pause play(); else if (e.getSource() = btnPre) pre(); else if (e.getSource() = btnNext) / next music next(); else if (e.getSource() = itemSequence) mode = 0; else if (e.getSource() = itemSingle) mode = 1; else if

22、(e.getSource() = itemRandom) mode = 2; / play control/* 播放*/ public void play() if (btnPlay.getIcon() = iconPlay) if (isPause) player.start(); System.out.println(暂停结束); isPause = false; else try player = Manager.createPlayer(new MediaLocator(file:+ currentItem.getPath(); player.addControllerListener

23、(this); / 提取媒体内容 player.prefetch(); catch (NoPlayerException e1) e1.printStackTrace(); catch (IOException e1) e1.printStackTrace(); btnPlay.setIcon(iconPause); else player.stop(); isPause = true; System.out.println(暂停); btnPlay.setIcon(iconPlay); public void next() if (currentIndex = listModel.getSi

24、ze() - 1) currentIndex = 0; else currentIndex+; currentItem = (ListItem) listModel.get(currentIndex); list.setSelectedIndex(currentIndex); Point p = list.indexToLocation(currentIndex); JScrollBar jScrollBar = listPane.getVerticalScrollBar();/ 获得垂直转动条 jScrollBar.setValue(p.y);/ 设置垂直转动条位置 btnPlay.setI

25、con(iconPlay); if (player != null) player.close(); isPause = false; play(); public void rand() list.setSelectedIndex(int)(Math.random()%(listModel.getSize()-1); Point p=list.indexToLocation(int)(Math.random()%(listModel.getSize()-1); JScrollBar jScrollBar = listPane.getVerticalScrollBar(); jScrollBa

26、r.setValue(p.y); btnPlay.setIcon(iconPlay); if (player != null) player.close(); isPause = false; play(); public void pre() if (currentIndex = 0) currentIndex = listModel.getSize() - 1; else currentIndex-; currentItem = (ListItem) listModel.get(currentIndex); list.setSelectedIndex(currentIndex); Poin

27、t p = list.indexToLocation(currentIndex); JScrollBar jScrollBar = listPane.getVerticalScrollBar();/ 获得垂直转动条 jScrollBar.setValue(p.y);/ 设置垂直转动条位置 btnPlay.setIcon(iconPlay); if (player != null) player.close(); isPause = false; play(); / end play control public DefaultListModel load() File file = new F

28、ile(list.lst); DefaultListModel dlm = new DefaultListModel(); if (file.exists() try ObjectInputStream ois = new ObjectInputStream( new FileInputStream(file); Integer size = (Integer) ois.readObject(); if (size != 0) for (int i = 0; i size; i+) ListItem item = (ListItem) ois.readObject(); dlm.addElement(item); ois.close(); return dlm; catch (FileNotFoundException e) e.print