Java多個用戶端聊天程式實現程式

代碼如下

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import java.io.*; import java.net.*; import java.util.*; public class HeartServer {          /*      * 成員變數閃亮登場      */     List<ClientThread> clients = new ArrayList<ClientThread>();         /**      * 這系入口啊，向這裡看齊...      * @param args      */     public static void main(String[] args) {         new HeartServer().start();     }         /**      * 啟動伺服器中...      *      */     public void start(){         try {             boolean iConnect = false;             ServerSocket ss = new ServerSocket(1720);             iConnect = true;             while(iConnect){ System.out.println("綁定伺服器連接埠成功！");                 Socket s = ss.accept();                 ClientThread currentClient = new ClientThread(s);//建立線程引用 System.out.println("發現用戶端！");                 clients.add(currentClient);//把當前用戶端加入集合                 new Thread(currentClient).start(); System.out.println("用戶端進程已經啟動！");             }         } catch (IOException e) {             System.out.println("IOException");             e.printStackTrace();         }     }         /**      * 給每個用戶端留個家（用戶端的進程）      *      */     class ClientThread implements Runnable {         /*          * 成員變數又來啦...          */         private Socket s;         private DataInputStream dis;         private DataOutputStream dos;         private String str;         private boolean iConnect = false;                 /**          * 小構一下          */         ClientThread(Socket s){             this.s = s;             iConnect = true;         }                 public void run(){ System.out.println("run方法啟動了！");             try {                                 while(iConnect){ System.out.println("RUN方法中的while迴圈啟動，正在等待用戶端的發送訊息...");                     dis = new DataInputStream(s.getInputStream());                     str = dis.readUTF(); System.out.println(str);                     for(int i=0; i<clients.size(); i++){ System.out.println("轉寄訊息中..."+i);                         ClientThread c = clients.get(i);                         c.sendMsg(str);                     }                 }             } catch (IOException e) {                 e.printStackTrace();             }                     }                 /**          * 轉寄訊息，我做主...          * 將送至伺服器的訊息發送給每個串連到的用戶端          */         public void sendMsg(String str){             try { System.out.println("建立輸出管道！");                 dos = new DataOutputStream(this.s.getOutputStream()); System.out.println("正在向用戶端寫訊息！");                 dos.writeUTF(str); System.out.println("正在向用戶端寫訊息成功！");                        } catch (IOException e) {                 e.printStackTrace();             }                     }             }     }

程式

代碼如下

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import java.awt.*; import java.awt.event.*; import java.io.*; import java.lang.*; import java.net.*; public class HeartClient extends Frame {     /*      *  成員方法出場...      */     private TextField tfText;     private TextArea taContent;     private Socket s;     private DataOutputStream dos;     private DataInputStream dis;         /**      * 注意，入口... ^^      * @param args      */     public static void main(String[] args) {         new HeartClient().launchFrame();             }         /**      * Loading GU      */     public void launchFrame(){         tfText = new TextField();         taContent = new TextArea();         this.setSize(300,300);         this.setLocation(300,300);         this.tfText.addActionListener(new TFListener());         this.add(tfText,BorderLayout.SOUTH);         this.add(taContent,BorderLayout.NORTH);         this.addWindowListener(new WindowAdapter(){             @Override             public void windowClosing(WindowEvent e) {                 System.exit(0);             }});         this.pack();         this.connect();         this.setVisible(true);     }     /**      * 我在努力地串連伺服器中...      */     public void connect() {         try {             s = new Socket("127.0.0.1",1720);             dos = new DataOutputStream(s.getOutputStream());             dis = new DataInputStream(s.getInputStream());             new Thread(new SendThread()).start(); //            dos.writeUTF("Hello,i find u!");         } catch (UnknownHostException e) {             System.out.println("UnknownHostException");             e.printStackTrace();         } catch (IOException e) {             System.out.println("IOException");             e.printStackTrace();         }finally{             //關閉啥尼...         }             }     /**      * 額不會傻等著tfText(TextField tfText的監聽器類)      */     class TFListener implements ActionListener{         private String str;         @Override         public void actionPerformed(ActionEvent e) {             str = tfText.getText().trim();             tfText.setText("");             try {                 dos.writeUTF(str);             } catch (IOException e1) {                 System.out.println("IOException");                 e1.printStackTrace();             }         }             }         /**      * 用戶端接收訊息的線程呦...      *      */     class SendThread implements Runnable{         private String str;         private boolean iConnect = false;                 public void run(){             iConnect = true;             recMsg();                     }                 /**          * 訊息，看招，哪裡跑...（用戶端接收訊息的實現）          * @throws IOException          */         public void recMsg() {             try {                 while(iConnect){                     str = dis.readUTF();                     taContent.setText(str);                 }             } catch (IOException e) {                 e.printStackTrace();             }                     }             }     }