beatbox最终版本

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//BeatBox服务器端最终版import java.io.*;import java.net.*;import java.util.*;public class MusicServer{ArrayList<ObjectOutputStream> clientOutputStreams;public static void main(String [] args){new MusicServer().go();}public class ClientHandler implements Runnable{ObjectInputStream in;Socket clientSocket;public ClientHandler(Socket socket){try{clientSocket=socket;in=new ObjectInputStream(clientSocket.getInputStream());}catch(Exception ex){ex.printStackTrace();}}public void run()//服务器接受并传送2个对象{Object o2=null;Object o1=null;try{while((o1=in.readObject())!=null){o2=in.readObject();System.out.println("read two Objects");tellEveryone(o1,o2);}}catch(Exception ex){ex.printStackTrace();}}}public void go(){clientOutputStreams=new ArrayList<ObjectOutputStream>();try{ServerSocket serverSocket=new ServerSocket(4242);while(true){Socket clientSocket=serverSocket.accept();ObjectOutputStream out=new ObjectOutputStream(clientSocket.getOutputStream());clientOutputStreams.add(out);Thread t=new Thread(new ClientHandler(clientSocket));t.start();System.out.println("got a connection");}}catch(Exception ex){ex.printStackTrace();}}public void tellEveryone(Object one,Object two){Iterator it=clientOutputStreams.iterator();while(it.hasNext()){try{ObjectOutputStream out=(ObjectOutputStream)it.next();out.writeObject(one);out.writeObject(two);}catch(Exception ex){ex.printStackTrace();}}}}

package AppendixA;// chapter 14import java.awt.*;import javax.swing.*;import javax.swing.event.ListSelectionEvent;import javax.swing.event.ListSelectionListener;import java.io.*;import javax.sound.midi.*;import java.util.*;import java.awt.event.*;import java.net.*;public class BeatBoxFinal {  // implements MetaEventListener       JPanel mainPanel;      JList incomingList;      JTextField userMessage;      ArrayList<JCheckBox> checkboxList;      int nextNum;      ObjectInputStream in;      ObjectOutputStream out;      Vector<String> listVector = new Vector<String>();      String userName ;      HashMap<String, boolean[]> otherSeqsMap = new HashMap<String, boolean[]>();      Sequencer sequencer;      Sequence sequence;      Sequence mySequence = null;      Track track;      JFrame theFrame;      String[] instrumentNames = {"Bass Drum", "Closed Hi-Hat",          "Open Hi-Hat","Acoustic Snare", "Crash Cymbal", "Hand Clap",          "High Tom", "Hi Bongo", "Maracas", "Whistle", "Low Conga",          "Cowbell", "Vibraslap", "Low-mid Tom", "High Agogo",          "Open Hi Conga"};      int[] instruments = {35,42,46,38,49,39,50,60,70,72,64,56,58,47,67,63};          public static void main (String[] args) {        new BeatBoxFinal().startUp(args[0]);      }            public void startUp(String name) {          userName = name;          try {              Socket sock = new Socket("127.0.0.1", 4242);              out = new ObjectOutputStream(sock.getOutputStream());              in = new ObjectInputStream(sock.getInputStream());              Thread remote = new Thread(new RemoteReader());              remote.start();          }          catch (Exception ex) {              System.out.println("couldn't connect - you'll have to play alone.");          }          setUpMidi();          buildGUI();      }      public void buildGUI() {          theFrame = new JFrame("Cyber BeatBox");          theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);          BorderLayout layout = new BorderLayout();          JPanel background = new JPanel(layout);          background.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));          checkboxList = new ArrayList<JCheckBox>();          Box buttonBox = new Box(BoxLayout.Y_AXIS);          JButton start = new JButton("Start");          start.addActionListener(new MyStartListener());          buttonBox.add(start);                              JButton stop = new JButton("Stop");          stop.addActionListener(new MyStopListener());          buttonBox.add(stop);          JButton upTempo = new JButton("Tempo Up");          upTempo.addActionListener(new MyUpTempoListener());          buttonBox.add(upTempo);           JButton downTempo = new JButton("Tempo Down");          downTempo.addActionListener(new MyDownTempoListener());          buttonBox.add(downTempo);                    JButton sendIt = new JButton("sendIt");          sendIt.addActionListener(new MySendListener());          buttonBox.add(sendIt);                    JButton saveIt = new JButton("Serialize It");  // new button          saveIt.addActionListener(new MySendListener());          buttonBox.add(saveIt);                    userMessage = new JTextField();          buttonBox.add(userMessage);                    incomingList = new JList();          incomingList.addListSelectionListener(new MyListSelectionListener());          incomingList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);          JScrollPane theList = new JScrollPane(incomingList);          buttonBox.add(theList);          incomingList.setListData(listVector);                    Box nameBox = new Box(BoxLayout.Y_AXIS);          for (int i = 0; i < 16; i++) {              nameBox.add(new Label(instrumentNames[i]));          }                  background.add(BorderLayout.EAST, buttonBox);          background.add(BorderLayout.WEST, nameBox);          theFrame.getContentPane().add(background);                    GridLayout grid = new GridLayout(16,16);          grid.setVgap(1);          grid.setHgap(2);          mainPanel = new JPanel(grid);          background.add(BorderLayout.CENTER, mainPanel);          for (int i = 0; i < 256; i++) {                                    JCheckBox c = new JCheckBox();                c.setSelected(false);                checkboxList.add(c);                mainPanel.add(c);                      } // end loop          theFrame.setBounds(50,50,300,300);          theFrame.pack();          theFrame.setVisible(true);        } // close method     public void setUpMidi() {       try {        sequencer = MidiSystem.getSequencer();        sequencer.open();        // sequencer.addMetaEventListener(this);        sequence = new Sequence(Sequence.PPQ,4);        track = sequence.createTrack();        sequencer.setTempoInBPM(120);               } catch(Exception e) {e.printStackTrace();}    } // close method    public void buildTrackAndStart()    {        // this will hold the instruments for each vertical column,        // in other words, each tick (may have multiple instruments)        ArrayList<Integer> trackList = null;        sequence.deleteTrack(track);        track = sequence.createTrack();        for (int i = 0; i < 16; i++){            trackList = new ArrayList<Integer>();            for (int j = 0; j < 16; j++){                JCheckBox jc = (JCheckBox) checkboxList.get(j + (16 * i));                if (jc.isSelected()){                    int key = instruments[i];                    trackList.add(key);                }                 else                {                    trackList.add(null);                }            } // close inner            makeTracks(trackList);        } // close outer     track.add(makeEvent(192,9,1,0,15)); // - so we always go to full 16 beats                               try {                      sequencer.setSequence(sequence);             sequencer.setLoopCount(sequencer.LOOP_CONTINUOUSLY);                             sequencer.start();           sequencer.setTempoInBPM(120);       } catch(Exception e) {e.printStackTrace();}       } // close method            //============================================================== inner class listeners                        public class MyStartListener implements ActionListener {        public void actionPerformed(ActionEvent a) {             buildTrackAndStart();         }      }    public class MyStopListener implements ActionListener {       public void actionPerformed(ActionEvent a) {           sequencer.stop();       }    }    public class MyUpTempoListener implements ActionListener {       public void actionPerformed(ActionEvent a) {            float tempoFactor = sequencer.getTempoFactor();            sequencer.setTempoFactor((float)(tempoFactor * 1.03));       }    }    public class MyDownTempoListener implements ActionListener {        public void actionPerformed(ActionEvent a) {            float tempoFactor = sequencer.getTempoFactor();            sequencer.setTempoFactor((float)(tempoFactor * .97));        }    }    public class MySendListener implements ActionListener {    // new - save       public void actionPerformed(ActionEvent a) {          // make an arraylist of just the STATE of the checkboxes         boolean[] checkboxState = new boolean[256];         for (int i = 0; i < 256; i++) {             JCheckBox check = (JCheckBox) checkboxList.get(i);             if (check.isSelected()) {                checkboxState[i] = true;             }          }         try {             out.writeObject(userName + nextNum++ + ": " + userMessage.getText());            out.writeObject(checkboxState);         } catch(Exception ex) {             ex.printStackTrace();             System.out.println("sorry dude. Could not send it to the server");         }       } // close method     } // close inner class    public class MyListSelectionListener implements ListSelectionListener {        public void valueChanged(ListSelectionEvent le) {            if (!le.getValueIsAdjusting()) {                String selected = (String) incomingList.getSelectedValue();                if (selected != null) {                    boolean[] selectedState = (boolean[]) otherSeqsMap.get(selected);                    changeSequence(selectedState);                    sequencer.stop();                    buildTrackAndStart();                }            }        }    }    /*public class RemoteReader implements Runnable{boolean [] checkboxState=null;String nameToShow = null;Object obj=null;public void run(){try{while((obj=in.readObject())!=null){System.out.println("got an object from server");System.out.println(obj.getClass());nameToShow=(String)obj;checkboxState=(boolean [])in.readObject();otherSeqsMap.put(nameToShow,checkboxState);listVector.add(nameToShow);incomingList.setListData(listVector);}}catch(Exception ex){ex.printStackTrace();}}}*/    public class RemoteReader implements Runnable {        boolean[] checkboxState = null;        String nameToShow = null;        Object obj = null;                public void run() {            try {                while ((obj=in.readObject()) != null) {                    System.out.println("got an object from server");                    System.out.println(obj.getClass());                    String nameToShow = (String) obj;                    checkboxState = (boolean[]) in.readObject();                    otherSeqsMap.put(nameToShow, checkboxState);                    listVector.add(nameToShow);                    incomingList.setListData(listVector);                }            }catch (Exception e) { e.printStackTrace(); }        }    }//==============================================================           public void changeSequence(boolean[] checkboxState) {        for (int i = 0; i < 256; i++) {            JCheckBox check = (JCheckBox) checkboxList.get(i);            if (checkboxState[i]) {                check.setSelected(true);            }            else            {                check.setSelected(false);            }        }    }         public void makeTracks(ArrayList<Integer> list) {         Iterator it = list.iterator();         for (int i = 0; i < 16; i++) {             Integer num = (Integer) it.next();             if (num != null) {                 int numKey = num.intValue();                 track.add(makeEvent(144, 9, numKey, 100, i));                 track.add(makeEvent(128, 9, numKey, 100, i+1));             }         }      }             public  MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {          MidiEvent event = null;          try {            ShortMessage a = new ShortMessage();            a.setMessage(comd, chan, one, two);            event = new MidiEvent(a, tick);                        }catch(Exception e) { }          return event;       }}

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