图形用户界面聊天室 客户端和服务器 服务器代码： package netprogramme; import java.io.*; import java.net.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.*; public class ChatServer extends JFrame implements ActionListener{ ServerSocket server; Socket theClient; boolean done; JButton send; JTextArea chatContent; JTextField sentence; DataInputStream in=null; DataOutputStream out=null; public ChatServer(){ buildGUI("聊天室--服务器端"); try { server=new ServerSocket(2011); } catch (IOException e) { System.out.println(e); } while(true){ try { theClient=server.accept(); out=new DataOutputStream(theClient.getOutputStream()); in=new DataInputStream(theClient.getInputStream()); done=true; String line=null; while(done){ while((line=in.readUTF())!=null){ chatContent.append("对方："+line+"\n"); } in.close(); 1 

out.close(); theClient.close(); } } catch (IOException e) { e.printStackTrace(); } } } private void buildGUI(String title) { this.setTitle(title); this.setSize(400,300); Container container=this.getContentPane(); container.setLayout(new BorderLayout()); JScrollPane centerPanel=new JScrollPane(); chatContent=new JTextArea(); centerPanel.setViewportView(chatContent); container.add(centerPanel,BorderLayout.CENTER); chatContent.setEditable(false); JPanel bottomPanel=new JPanel(); sentence=new JTextField(20); send=new JButton("发送"); bottomPanel.add(new JLabel("聊天信息")); bottomPanel.add(sentence); bottomPanel.add(send); container.add(bottomPanel,BorderLayout.SOUTH); send.addActionListener(this); this.setVisible(true); this.addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e){ try{ out.writeUTF("bye"); }catch(IOException e1){ }finally{ System.exit(0); System.out.println("服务器端窗口关闭……"); } } }); } public void actionPerformed(ActionEvent e){ String str=sentence.getText(); if(str!=null&&!str.equals("")){ 2 

chatContent.append("本人"+str+"\n"); try{ out.writeUTF(sentence.getText()); }catch(Exception e1){ chatContent.append("客户不在……\n"); } } else{ chatContent.append("聊天信息不能为空\n"); } sentence.setText(""); } public static void main(String[] args) { new ChatServer(); } } 客户端代码： package netprogramme; import java.io.*; import java.net.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class ChatClient extends JFrame implements ActionListener{ Socket client; boolean done; JButton send; JTextArea chatContent; JTextField sentence; DataInputStream in=null; DataOutputStream out=null; public ChatClient(){ buildGUI("聊天室--客户端"); try { client=new Socket("localhost",2011); in=new DataInputStream(client.getInputStream()); out=new DataOutputStream(client.getOutputStream()); done=false; String line=null; while(true){ 3 

while((line=in.readUTF())!=null){ chatContent.append("对方："+line+"\n"); if(line.equals("bye")){ String msg="服务器发来结束通信命令！\n"; msg+="系统将在您确认此对话框8秒后关闭，\n请及时保存聊天内 容！"; JOptionPane.showMessageDialog(this, msg); try { Thread.sleep(8000); done=true; break; } catch (InterruptedException e) { e.printStackTrace(); } } } in.close(); out.close(); System.exit(0); } } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } private void buildGUI(String title) { this.setTitle(title); this.setSize(400,300); Container container=this.getContentPane(); container.setLayout(new BorderLayout()); JScrollPane centerPanel=new JScrollPane(); chatContent=new JTextArea(); centerPanel.setViewportView(chatContent); container.add(centerPanel,BorderLayout.CENTER); chatContent.setEditable(false); JPanel bottomPanel=new JPanel(); sentence=new JTextField(20); send=new JButton("发送"); bottomPanel.add(new JLabel("聊天信息")); bottomPanel.add(sentence); bottomPanel.add(send); container.add(bottomPanel,BorderLayout.SOUTH); 4 

send.addActionListener(this); this.setVisible(true); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args) { new ChatClient(); } public void actionPerformed(ActionEvent e) { String str=sentence.getText(); if(str!=null&&!str.equals("")){ chatContent.append("本人"+str+"\n"); try{ out.writeUTF(sentence.getText()); }catch(Exception e1){ chatContent.append("服务器没有启动……\n"); } } else{ } } chatContent.append("聊天信息不能为空\n"); } sentence.setText(""); 5