多人聊天室

来源：互联网发布：人口普查数据编辑：程序博客网时间：2024/05/22 00:09

首先运行Server端，然后运行多个客户端

源代码：http://pan.baidu.com/s/1bnb4Mq7

聊天室Server端

import java.io.IOException;import java.net.*;import java.io.*;import java.util.*;public class ChatServer {    ServerSocket ss=null;    boolean started=false;    Socket s=null;    List<Client> clients=new ArrayList<Client>();//接收客户端连接            public static void main(String[] args) {        new ChatServer().start();            }    public void start(){            int counter=1;        try {            ss=new ServerSocket(7777);            started=true;        }catch(BindException e){            System.out.println("端口正在使用。。。。");            System.out.println("请先关闭相关的程序，在重新运行服务器");            System.exit(0);                    }catch(IOException e){            e.printStackTrace();        }        try{            while(started){                s=ss.accept();                Client c=new Client(s);                System.out.println("客户端："+counter+++" 已经连上，"+"来自："+                                        s.getInetAddress().getHostName()+"端口号为："+s.getPort());                new Thread(c).start();                clients.add(c);//保存下来              }         }catch(IOException e){             e.printStackTrace();         }finally{                try {                    ss.close();                 }catch (Exception e) {                                    }        }    }    class Client implements Runnable{        private Socket s=null;        private DataInputStream dis=null;        private DataOutputStream dos=null;                boolean bContected=false;                public Client(Socket s){            this.s=s;            try {                dis=new DataInputStream(s.getInputStream());                dos=new DataOutputStream(s.getOutputStream());                bContected=true;            } catch (IOException e) {                e.printStackTrace();            }        }                public void send(String str){            try {                dos.writeUTF(str);            } catch (IOException e){                clients.remove(this);                System.out.println("对方退出了，也在clients中去掉了");            }                    }        public void run() {            Client c=null;            try{                while(bContected)                {                    String str=dis.readUTF();                    for(int i=0;i<clients.size();i++)                    {                        c=clients.get(i);                            c.send("来自："+s.getInetAddress().getHostName()+s.getPort()+"  : "+str);                                            }                    /*也行，但是慢，一下会锁定，效率低                     for(Iterator<Client> it=clients.iterator();it.hasNext()){                         Client c=it.next();                            c.send(str);                     }                    */                    System.out.println("来自："+s.getInetAddress().getHostName()+s.getPort()+"  : "+str);                }            }catch(SocketException e){                System.out.println("来自："+s.getInetAddress().getHostName()                                +"端口号为："+s.getPort()+" 的客户端关闭了!");            }catch(EOFException e){                System.out.println("来自："+s.getInetAddress().getHostName()                        +"端口号为："+s.getPort()+" 的客户端关闭了!");             }catch(IOException e){                 System.out.println("来自："+s.getInetAddress().getHostName()                            +"端口号为："+s.getPort()+" 的客户端关闭了!");             }finally{                 try {                    if(dis!=null)    dis.close();                    if(s!=null)      s.close();                    if(dos!=null)  dos.close();                                    //clients.remove(this);                                       }catch (Exception e) {                        e.printStackTrace();                   }            }                                }            }}

客户端：

import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.io.*;import java.net.*;public class ChatClient extends Frame {        Socket s=null;    DataOutputStream dos=null;    DataInputStream dis=null;    boolean beContected=false;    private static final long serialVersionUID = 1L;    TextField tfTxt = new TextField();    TextArea taContent = new TextArea();    public static void main(String[] args) {        new ChatClient().launchFrame();    }    public void launchFrame() {        setLocation(300, 200);        setSize(100, 100);        add(tfTxt, BorderLayout.SOUTH);        add(taContent, BorderLayout.NORTH);        pack();        tfTxt.addActionListener(new TfListener());        taContent.setEditable(false);        this.addWindowListener(new WindowAdapter(){            public void windowClosing(WindowEvent e) {                discontect();                System.exit(0);            }            });        contect();        new Thread(new RevThread()).start();                setVisible(true);    }        public void contect(){        try {           s=new Socket("127.0.0.1",7777);           this.setTitle("已连接");           dos=new DataOutputStream(s.getOutputStream());           dis=new DataInputStream(s.getInputStream());//接收来自由服务器的信息（）                      //System.out.println("==Contected!==");            beContected=true;        } catch (UnknownHostException e) {            System.out.println("请确保服务器已经开启！！！");        } catch (IOException e) {                        System.out.println("请检查设置！！！");        }            }     public void discontect(){        try {            dos.close();            s.close();        } catch (IOException e) {            e.printStackTrace();        }    }        private class TfListener implements ActionListener{        public void actionPerformed(ActionEvent e) {            String str=tfTxt.getText().trim();            //taContent.setText(str);            //最后才注释            tfTxt.setText("");            try {                dos.writeUTF(str);                dos.flush();                    }catch(IOException e1){                            }                        }                                        }    public class RevThread implements Runnable{                public void run() {            try {                while(beContected){                    String str;                        str = dis.readUTF();                    //System.out.println(str);                    taContent.setText(taContent.getText()+str+'\n');                }            }catch(SocketException e){                System.out.println("退出了，拜拜--bye");            }catch(EOFException e){                System.out.println("退出了，拜拜");            } catch (IOException e) {                                            e.printStackTrace();            }            }            }}

运行效果如图：

2 0