JAVA音乐播放器（二）（实现列表点击播放）

package kk;

import java.applet.Applet;
import java.applet.AudioClip;
import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.text.BadLocationException;

import java.awt.CardLayout;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.SourceDataLine;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import java.awt.event.ItemListener;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Vector;
import java.awt.event.ItemEvent;
import javax.swing.JMenu;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.JSlider;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import java.awt.Font;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseWheelListener;
import java.awt.event.MouseWheelEvent;
import javax.swing.JList;

@SuppressWarnings({ "serial", "unused" })
public class Mp3 extends JFrame {

private JPanel contentPane;
File file;// 声明文件对象
int index;
String filename;
String ss = "";
String flag = "";
String tt = "";
@SuppressWarnings("rawtypes")
Vector vt = new Vector();
JFileChooser chooser = new JFileChooser();// 创建一个文件选择器
private JTextField xiaoxi;
boolean loop = false;
AudioClip adc;// 声音音频剪辑对象
SourceDataLine line;
private FloatControl volume = null;

/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Mp3 frame = new Mp3();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public String getmusic(String path) throws Exception {

File rootDir = new File(path);
String[] fileList = rootDir.list();
if (!rootDir.isDirectory()) {
String type = "mp3";
String st = "";
if (type.equals(
rootDir.getName().substring(rootDir.getName().lastIndexOf(".") + 1, rootDir.getName().length()))) {
st = rootDir.getName().substring(0, rootDir.getName().lastIndexOf("."));
System.out.println(st);
ss += st + "\n";
}
} else {
for (int i = 0; i < fileList.length; i++) {

path = rootDir.getAbsolutePath() + "\\" + fileList[i];
getmusic(path);
}
}
return null;
}

/**
* Create the frame.
*/
public Mp3() {
setResizable(false);
setFont(new Font("微软雅黑", Font.PLAIN, 12));
setTitle("\u97F3\u4E50\u64AD\u653E\u5668");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 364, 478);
JScrollPane scrollPane = new JScrollPane();
JSlider slider = new JSlider();
@SuppressWarnings("rawtypes")
JList songlist = new JList();
songlist.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if(adc!=null)
adc.stop();
try {
URL url;
flag = (String) songlist.getSelectedValue();
tt = flag;
System.out.println(ss);
url = new URL("file:" + "C:\\Users\\kezeli\\Music\\Music\\" + flag + ".mp3");
adc = Applet.newAudioClip(url);
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} // 创建资源定
if(e.getClickCount()==2){
flag = "正在播放：" + flag;
xiaoxi.setText(flag);
adc.play();
}
}
});
songlist.setFont(new Font("微软雅黑", Font.PLAIN, 12));
scrollPane.setViewportView(songlist);
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);

JMenu mnNewMenu = new JMenu("\u83DC\u5355");
mnNewMenu.setFont(new Font("微软雅黑", Font.PLAIN, 12));
menuBar.add(mnNewMenu);
xiaoxi = new JTextField();
xiaoxi.setEditable(false);
xiaoxi.setFont(new Font("微软雅黑", Font.PLAIN, 12));
xiaoxi.setColumns(10);
xiaoxi.setText("欢迎使用本播放器");

JMenuItem dakai = new JMenuItem("\u6253\u5F00");
dakai.setFont(new Font("微软雅黑", Font.PLAIN, 12));
dakai.addActionListener(new ActionListener() {
@SuppressWarnings("static-access")
public void actionPerformed(ActionEvent e) {
int value = chooser.showOpenDialog(chooser);// 接受文件选择器的状态
if (value == chooser.APPROVE_OPTION) {
file = chooser.getSelectedFile();// 返回选中文件
filename = file.getName();
String flag = filename;
xiaoxi.setText(flag);
try {
if (adc != null)
adc.stop();
URL url = new URL("file:" + file.getPath());// 创建资源定位
adc = Applet.newAudioClip(url);
// adc.play();

} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
System.out.println("不能播放！");
}
}
}
});
mnNewMenu.add(dakai);

JMenuItem tuichu = new JMenuItem("\u9000\u51FA");
tuichu.setFont(new Font("微软雅黑", Font.PLAIN, 12));
tuichu.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {

dispose();
if (adc != null)
adc.stop();
return;
}
});

JMenuItem saomiao = new JMenuItem("\u626B\u63CF\u672C\u5730\u97F3\u4E50");
saomiao.addActionListener(new ActionListener() {
@SuppressWarnings("unchecked")
public void actionPerformed(ActionEvent e) {
String path = "C:\\Users\\kezeli\\Music\\Music";
ss = "";
try {
getmusic(path);
String[] split = ss.split("\n");
for (int i = 0; i < split.length; i++) {
vt.addElement(split[i]);
songlist.setListData(vt);
}

} catch (Exception ee) {
System.out.println("there is wrong!");
}

}
});
saomiao.setFont(new Font("微软雅黑", Font.PLAIN, 12));
mnNewMenu.add(saomiao);

mnNewMenu.add(tuichu);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);

JButton playbtn = new JButton("\u64AD\u653E");
playbtn.setFont(new Font("微软雅黑", Font.PLAIN, 12));
playbtn.setHorizontalAlignment(SwingConstants.LEFT);
playbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
adc.stop();
if (filename != null)
flag = "正在播放：" + filename;
else
flag = "正在播放：" + tt;
if (adc == null) {
flag = "请选择播放的音乐";
xiaoxi.setText(flag);
return;
}
adc.play();
xiaoxi.setText(flag);
}
});

JButton stopbtn = new JButton("\u6682\u505C");
stopbtn.setFont(new Font("微软雅黑", Font.PLAIN, 12));
stopbtn.setHorizontalAlignment(SwingConstants.LEFT);
stopbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
adc.stop();
if (filename != null)
flag = "停止播放音乐:" + filename;
else
flag = "停止播放音乐:" + tt;
xiaoxi.setText(flag);
}
});

JButton againbtn = new JButton("\u5FAA\u73AF");
againbtn.setFont(new Font("微软雅黑", Font.PLAIN, 12));
againbtn.setHorizontalAlignment(SwingConstants.LEFT);
againbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
loop = !loop;
flag = "";
if (loop) {
adc.play();
adc.loop();// 循环播放
if (filename != null)
flag = "循环播放音乐:" + filename;
else
flag = "循环播放音乐:" + tt;
}
else {
adc.play();
if (filename != null)
flag = "顺序播放音乐:" + filename;
else
flag = "顺序播放音乐:" + tt;
}
xiaoxi.setText(flag);
}
});

JButton lastbtn = new JButton("\u4E0A\u4E00\u66F2");
lastbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
adc.stop();
index = songlist.getSelectedIndex();
if (index > 0) {
try {
URL url;
songlist.setSelectedIndex(index--);
flag = (String) songlist.getSelectedValue();
tt = flag;
System.out.println(ss);
url = new URL("file:" + "C:\\Users\\kezeli\\Music\\Music\\" + flag + ".mp3");
flag = "正在播放：" + flag;
xiaoxi.setText(flag);
adc = Applet.newAudioClip(url);
adc.play();
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
});
lastbtn.setFont(new Font("微软雅黑", Font.PLAIN, 12));
JButton nextbtn = new JButton("\u4E0B\u4E00\u66F2");
nextbtn.setFont(new Font("微软雅黑", Font.PLAIN, 12));

GroupLayout gl_contentPane = new GroupLayout(contentPane);
gl_contentPane
.setHorizontalGroup(
gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup().addContainerGap()
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(scrollPane, GroupLayout.DEFAULT_SIZE, 372,
Short.MAX_VALUE)
.addComponent(xiaoxi, GroupLayout.DEFAULT_SIZE, 372, Short.MAX_VALUE)
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(playbtn, GroupLayout.PREFERRED_SIZE, 64,
GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED, 66, Short.MAX_VALUE)
.addComponent(stopbtn, GroupLayout.PREFERRED_SIZE, 66,
GroupLayout.PREFERRED_SIZE)
.addGap(58).addComponent(againbtn, GroupLayout.PREFERRED_SIZE, 64,
GroupLayout.PREFERRED_SIZE))
.addComponent(slider, GroupLayout.DEFAULT_SIZE, 372, Short.MAX_VALUE)
.addGroup(gl_contentPane.createSequentialGroup().addComponent(lastbtn)
.addPreferredGap(ComponentPlacement.RELATED, 132, Short.MAX_VALUE)
.addComponent(nextbtn))).addContainerGap()));
gl_contentPane
.setVerticalGroup(
gl_contentPane.createParallelGroup(Alignment.TRAILING)
.addGroup(
gl_contentPane.createSequentialGroup()
.addComponent(xiaoxi, GroupLayout.PREFERRED_SIZE,
GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE)
.addComponent(lastbtn).addComponent(nextbtn))
.addPreferredGap(ComponentPlacement.RELATED, 9, Short.MAX_VALUE)
.addComponent(slider, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE,
GroupLayout.PREFERRED_SIZE).addGap(18)
.addComponent(scrollPane, GroupLayout.PREFERRED_SIZE, 258, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE).addComponent(playbtn)
.addComponent(againbtn).addComponent(stopbtn)).addContainerGap()));

contentPane.setLayout(gl_contentPane);
}

}