mediaplayer.java

一个小的播放器 大家可以参考一下 呵呵 这里还用到了一个其他的插件

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.media.*;
import java.io.*;
import java.util.*;//为了导入Vector
public class MediaPlayer extends JFrame implements ActionListener,Runnable
{
 private JMenuBar          bar;//菜单条
 private JMenu             fileMenu,choiceMenu,aboutMenu;
 private JMenuItem         openItem,openDirItem,closeItem,about,infor;
 private Player            player;//Play是个实现Controller的接口
 private File              file,listFile;//利用File类结合JFileChooser进行文件打开操作,后者与listfile有关
 private Container         c;
 private String            title;//标题
 private FileDialog        fd;
 private JPanel            panel,panelSouth;

    private JList             list;//播放清单
    private JScrollPane       scroll;//使播放清单具有滚动功能
    private ListValues        listWriteFile;//用于向文件中读取对象
    private ObjectInputStream input;//对象输入流
    private ObjectOutputStream output;//对象输出流
    
    private JPopupMenu        popupMenu;//鼠标右键弹出菜单
    private JMenuItem         del,delAll,reName;      //弹出菜单显示的菜单项,包括删除,全部删除和重命名
    
    private Vector            fileName,dirName,numList;
    private String            files,dir;
    private int               index;//曲目指针
    private int               indexForDel;//标志要删除的列表项目的索引
    private ButtonGroup       buttonGroup;//控制按钮组
    private JRadioButtonMenuItem[]    buttonValues;
    private String[]          content={"随机播放","顺序播放","单曲循环"};
    
    private DialogDemo        dialog1;
   
    
 MediaPlayer()//构造函数
 {
  super("java音频播放器");//窗口标题
     
  c=getContentPane();
  c.setLayout(new BorderLayout());
     
  fileName=new Vector(1);
  dirName=new Vector(1);
  numList=new Vector(1);//构造三个容器用于支持播放清单
  listFile=new File("listfile");//直接存于此目录
  Thread readToList=new Thread(this); 
  list=new JList();
  list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
  list.setSelectionForeground(new Color(0,150,150));
  list.setVisibleRowCount(10);
  list.setFixedCellHeight(12);
  list.setFixedCellWidth(250);
  list.setFont(new Font("Serif",Font.PLAIN,12));
  list.setBackground(new Color(227,136,240));
  list.setToolTipText("点右键显示更多功能");//设置各个属性
  list.addMouseListener(new MouseAdapter()
  {
   public void mouseClicked(MouseEvent e)
   {
                if (e.getClickCount() == 2) //判断是否双击
                {
                   index = list.locationToIndex(e.getPoint());//将鼠标坐标转化成list中的选项指针
                   createPlayer2();
     
                }
            }
            public void mouseReleased(MouseEvent e)
            {
             checkMenu(e);//判断是否鼠标右键,若是，弹出popupmenu,然后进行相应的菜单操作
            }
  }
  );
  scroll=new JScrollPane(list);//用于存放播放列表
  readToList.start();//启动线程，加载播放列表,若不启动，则程序在第二次启动时播放列表中没有任何东西
  try
  {
   Thread.sleep(10);//每10秒钟检测一下是否应该停止播放
  }
  catch(InterruptedException e)
  {
   e.printStackTrace();
  }
  
  bar=new JMenuBar();
  bar.setBackground(Color.green);
  setJMenuBar(bar);//此两行创建菜单栏并放到此窗口程序
  fileMenu=new JMenu("文件");
  bar.add(fileMenu);
  
  choiceMenu=new JMenu("控制");
  bar.add(choiceMenu);
  
  aboutMenu=new JMenu("帮助");
  bar.add(aboutMenu);
  
  openItem    =new JMenuItem("打开文件");
  openDirItem =new JMenuItem("打开目录");
  closeItem   =new JMenuItem("退出程序");
  openItem.addActionListener(this);
  openDirItem.addActionListener(this);
  closeItem.addActionListener(this);
  fileMenu.add(openItem);
  fileMenu.add(openDirItem);
  fileMenu.add(closeItem);
  buttonGroup=new ButtonGroup();
  buttonValues=new JRadioButtonMenuItem[3];
  for(int bt=0;bt<3;bt++)
  {
   buttonValues[bt]=new JRadioButtonMenuItem(content[bt]);
   buttonGroup.add(buttonValues[bt]);
   choiceMenu.add(buttonValues[bt]);
  }
  buttonValues[0].setSelected(true);
  choiceMenu.addSeparator();
  
  
  infor=new JMenuItem("软件简介");
  aboutMenu.add(infor);
  infor.addActionListener(this);
     
     about=new JMenuItem("关于作者");
  about.addActionListener(this);
  aboutMenu.add(about);
  //菜单栏设置完毕
  
  panel=new JPanel();
  panel.setLayout(new BorderLayout());
  panel.setBackground(new Color(227,136,240));
  c.add(panel,BorderLayout.CENTER);
  
  panelSouth=new JPanel();
  panelSouth.setLayout(new BorderLayout());
  c.add(panelSouth,BorderLayout.SOUTH);
  
  popupMenu=new JPopupMenu();
  del      =new JMenuItem("删除");//鼠标右键弹出菜单对象实例化
  popupMenu.add(del);
  del.addActionListener(this);
  popupMenu.setBackground(Color.green);
  
  delAll   =new JMenuItem("全部删除");
  popupMenu.add(delAll);
  delAll.addActionListener(this);
  reName   =new JMenuItem("重命名");
  popupMenu.add(reName);
  reName.addActionListener(this);
  
 
  
  scroll=new JScrollPane(list);//用于存放播放列表
  panelSouth.add(scroll,BorderLayout.CENTER);
  
  
  dialog1=new DialogDemo(MediaPlayer.this,"软件说明");
  
  this.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);//设定窗口关闭方式
  this.setLocation(400,250);//设定窗口出现的位置
  setSize(350,330);
  this.setResizable(false);//设置播放器不能随便调大小
  this.setVisible(true);//此句不可少，否则窗口会不显示
  
 }
 public void actionPerformed(ActionEvent e)
 {
  if(e.getSource()==openItem)
  {
   openFile();
  }
  if(e.getSource()==openDirItem)//打开目录
  {
   openDir();
  }
  if(e.getSource()==closeItem)//退出播放器
  {
   exity_n();
  }
  if(e.getSource()==about)
  {
   JOptionPane.showMessageDialog(this,"此简易播放器由计科053\n"
   +"郝燕青\n  "+"        完成            ",
   "参与者",
   JOptionPane.INFORMATION_MESSAGE);
  }
  if(e.getSource()==del)//删除后后面的选项要跟着前移
  {
   fileName.removeElementAt(indexForDel);
   dirName.removeElementAt(indexForDel);
   numList.removeAllElements();//从三个容器里面移除此项
   Enumeration enumFile=fileName.elements();
   while(enumFile.hasMoreElements())
   {
    numList.addElement((numList.size()+1)+"."+enumFile.nextElement());
    //numList添加元素，显示播放列表中
   }
   list.setListData(numList);
  }
  
  if(e.getSource()==delAll)//全部删除
  {
   fileName.removeAllElements();
   dirName.removeAllElements();
   numList.removeAllElements();
   list.setListData(numList);
  }
  
  if(e.getSource()==reName)//重命名
  {
   String name;
   try
   {
    name=reNames();
    fileName.setElementAt(name,indexForDel);//indexForDel(从0开始）是目前选中的歌曲项
    numList.setElementAt((indexForDel+1)+"."+name,indexForDel);
   }
   catch(Exception e2)
   {
   }
   
  }
  if(e.getSource()==infor)
  {
   dialog1.setVisible(true);
  }
 }
 
 public static void main(String[] args)
 {
  final MediaPlayer mp=new MediaPlayer();
  mp.addWindowListener(new WindowAdapter()//注册窗口事件
  {
   public void windowClosing(WindowEvent e)
      {
        mp.exity_n();
      }
  }
  
  );
 }
 
 private void openFile()
 {
   fd = new FileDialog(this);
   fd.setVisible(true);
   if (fd.getFile() != null)
   {
    title = fd.getDirectory() + fd.getFile();
    files=fd.getFile();
    file=new File(title);
    addList(fd.getFile());
   }
 }
 private void openDir()//本来用的是FileDialog，但是它打开的是文件而不是目录，所以就用了JFileChooser
 {
  JFileChooser fileChooser=new JFileChooser();
  fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
  int result=fileChooser.showOpenDialog(this);
  if(result==JFileChooser.CANCEL_OPTION)
      return;
  file=fileChooser.getSelectedFile();
  if(file==null||file.getName().equals(""))
  JOptionPane.showMessageDialog(this,"错误的路径",
  "出错了",JOptionPane.ERROR_MESSAGE);
  String[] sFiles=file.list();
  for(int i=0;i<sFiles.length;i++)//此处若是调用addList（）则效率降低
  {
   fileName.addElement(sFiles[i]);
   numList.addElement((numList.size()+1)+"."+sFiles[i]);
   dirName.addElement(file.getAbsolutePath()+"\\"+sFiles[i]);
  }
  list.setListData(numList);
 }