JAVA的即時通訊源代碼

1、JAVA實現(xiàn)即使通訊的代碼 圖形界面 / /用 Java 編寫的聊天器，可以當 服務器 或者 是客戶端，一對一，自定義對方 IP 及 端口。 /雖然名為 LANChat ，但不限于局域網(wǎng)。對象甚至可以是某種 “服務器”。 / import java.io.*; import .*; import java.awt.*; import javax.swing.*; import java.awt.event.*; / public class LANChatV12 public static void main(String args) LoginFrame lf = new Logi

2、nFrame("輸入目標"); lf.show(); / class LoginFrame extends JFrame JButton BOK; JLabel LdesAddr, Lport; JTextField TFdesAddr, TFport; String desAddr, port; LoginFrame() LoginFrame(String title) super(title); Frame t = this; BOK = new JButton("確定"); LdesAddr = new JLabel("目標 IP&quo

3、t;); Lport = new JLabel("端口 "); TFdesAddr = new JTextField(desAddr,12); TFport = new JTextField(port,12); /TFpassword.setEchoChar('*'); BOK.addActionListener(new BOKListener(t); setBackground(Color.blue); setBounds(350,250,200,128); setLayout(new FlowLayout(FlowLayout.CENTER,5,7);

4、add(LdesAddr); add(TFdesAddr); add(Lport); add(TFport); add(BOK); setResizable(false); /setVisible(true); addWindowListener(new WindowAdapter() public void windowClosing(WindowEvent e) System.exit(0); ); class BOKListener implements ActionListener Frame t; BOKListener() BOKListener(Frame t) this.t =

5、 t; public void actionPerformed(ActionEvent e) desAddr = TFdesAddr.getText(); port = TFport.getText(); t.setVisible(false); Messenger m = new Messenger(desAddr, port); m.start(); / class Messenger extends Thread String desAddr; String port; int iport; TextArea content, send; JButton Bsend; ChatFrame

6、 cf; String title; Socket client; ServerSocket ss; OutputStreamWriter osw = null; InputStreamReader isr = null; BufferedReader br; String line; boolean flag;/端口號是否正確 boolean cbc; /can be client ? int tryTurns = 3; /客戶方式嘗試的次數(shù) Messenger() Messenger(String desAddr, String port) super("LANChatMesse

7、nger"); content = new TextArea("",0,0,TextArea.SCROLLBARS_VERTICAL_ONLY); send = new TextArea("",0,0,TextArea.SCROLLBARS_VERTICAL_ONLY); Bsend = new JButton("發(fā)送"); Bsend.setEnabled(false); title = "與 " + desAddr +" 聊天" flag = true; cbc = true; c

8、f = new ChatFrame(title, content, send, Bsend); cf.show(); this.desAddr = desAddr; this.port = port; try iport = Integer.parseInt(port); catch(NumberFormatException nfe) content.append("非法的 端口，程序 4 秒后關(guān)閉。n"); flag = false; public void run() if(! flag) try Thread.sleep(4000); catch(Interrupt

9、edException ie) System.exit(0); System.exit(0); content.append("正在以客戶端方式進行連接.n"); do cbc = true; try client = new Socket(desAddr,iport); catch(Exception e) content.append("錯誤，無法連接地址：" + desAddr +":"+ port + 'n'); content.append("等待 1 秒再連接，剩余 " + (tryTu

10、rns -1) + " 次。n"); cbc = false; try Thread.sleep(1000); catch(InterruptedException ie) System.exit(0); -tryTurns; while(tryTurns > 0) && ! cbc); if(cbc) content.append("連接成功，可以開始了。" + "nn"); cf.setTitle("與 " + desAddr + ":" + port + "

11、 聊天"); send.requestFocus(); else content.append("客戶端方式失敗，現(xiàn)在啟動服務器并等待連接。" + 'n'); try ss = new ServerSocket(iport); catch(IOException ioe) content.append("n無法創(chuàng)建服務，程序?qū)⒃?4 秒后退出。n"); try Thread.sleep(4000); catch(InterruptedException ie) System.exit(0); System.exit(0); tr

12、y cf.setTitle("等待連接中.在端口：" + port); client = ss.accept(); catch(Exception e) content.append("nss.accept() 方法失敗，程序?qū)⒃?4 秒后退出。n"); try Thread.sleep(4000); catch(InterruptedException ie) System.exit(0); System.exit(0); content.append("連接成功，可以開始。" + client.getInetAddress().t

13、oString() + "nn"); cf.setTitle("與 " + client.getInetAddress().toString() + ":" + port + " 聊天"); send.requestFocus(); try osw = new OutputStreamWriter(client.getOutputStream(); isr = new InputStreamReader(client.getInputStream(); br= new BufferedReader(isr); /c

14、ontent.append("nbr createdn"); catch(IOException ioe) content.append("創(chuàng)建流錯誤，程序?qū)⒃?4 秒后退出。n"); try Thread.sleep(4000); catch(InterruptedException ie) System.exit(0); System.exit(0); Bsend.setEnabled(true); Bsend.addActionListener(new BsendListener(content, send, osw); try line = br

15、.readLine(); catch(IOException ioe) content.append("流讀取錯誤，程序?qū)⒃?4 秒后退出。n"); try Thread.sleep(4000); catch(InterruptedException ie) System.exit(0); System.exit(0); while(true) content.append("他說 : " + line + 'n'); try Thread.sleep(1000); catch(InterruptedException ie) Syste

16、m.exit(0); try line = br.readLine(); catch(IOException ioe) content.append("流讀取錯誤，程序?qū)⒃?4 秒后退出。n"); try Thread.sleep(4000); catch(InterruptedException ie) System.exit(0); System.exit(0); class BsendListener implements ActionListener TextArea content; TextArea send; OutputStreamWriter osw; B

17、sendListener(TextArea content, TextArea send, OutputStreamWriter osw) this.content = content; this.send = send; this.osw = osw; public void actionPerformed(ActionEvent e) String input; input = send.getText(); if(input.length() > 0) content.append("我說 : " + input + 'n'); try osw.

18、write(input + 'n', 0, input.length() + 1); osw.flush();/ 暈 catch(Exception ee) content.append("不能發(fā)送 "" + input + "" , 發(fā)生了錯誤 : " +ee.getMessage() + 'n'); send.setText(""); send.requestFocus(); / class ChatFrame extends JFrame TextArea content; TextArea send; JButton Bsend; ChatFrame() ChatFrame(String frameTitle,TextArea content, TextArea send, JButton Bsend) super(frameTitle); this.content = content; this.send = send; this.Bsend = Bsend; this.send.setEditable(true); setLayout(null); setBounds(300