此文本为客户端的聊天室，包括两种通许方式的代码，如下：
package liaotianshi; import java.awt.BorderLayout; import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import javax.swing.GroupLayout; import javax.swing.GroupLayout.Alignment; import javax.swing.JTextPane; import javax.swing.JLabel; import javax.swing.LayoutStyle.ComponentPlacement; import javax.swing.JEditorPane; import javax.swing.JTextField; import javax.swing.SwingConstants; import javax.swing.JTextArea; import javax.swing.JButton; import java.awt.Font; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.io.Serializable; import java.net.ServerSocket; import java.net.Socket; import java.awt.event.ActionEvent; import javax.swing.JComboBox; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.SocketException; import java.net.UnknownHostException; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import javax.swing.DefaultComboBoxModel; public class QQ extends JFrame { private JPanel contentPane; private JTextField textField; private JTextField textField_1; private static Socket s; private static int port; private static PrintWriter pw=null; private static BufferedReader br=null; /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { QQ frame = new QQ(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public QQ() { setResizable(false); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 750, 450); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); JLabel lblNewLabel = new JLabel("\u804A\u5929\u8F6F\u4EF6V1.0.0"); JTextArea textArea = new JTextArea(); textArea.setEditable(false); JLabel lblNewLabel_1 = new JLabel("IP\u5730\u5740"); textField = new JTextField("175.3.15.9"); textField.setColumns(10); JLabel lblNewLabel_2 = new JLabel("\u7AEF\u53E3\u53F7"); textField_1 = new JTextField("8528"); textField_1.setColumns(10); JTextArea textArea_1 = new JTextArea(); JButton btnNewButton = new JButton("\u53D1\u9001"); btnNewButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { pw=new PrintWriter(new OutputStreamWriter(s.getOutputStream())); br=new BufferedReader(new InputStreamReader(s.getInputStream())); InetAddress name=InetAddress.getLocalHost(); //获取当前主机IP String str = textArea_1.getText(); textArea_1.setText(""); Date date1=new Date(); //获取当前时间 DateFormat format=new SimpleDateFormat("yyyy年MM月dd日"); String time=format.format(date1); ArrayList lis=new ArrayList(); //文件用集合打包 lis.add(name); lis.add(str); lis.add(time); pw.println(lis); pw.flush(); String string=br.readLine(); textArea.setText(textArea.getText()+"\n"+string); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } }); JButton button = new JButton("\u53D6\u6D88"); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { textArea_1.setText(""); } }); button.setFont(new Font("宋体", Font.PLAIN, 10)); JLabel lblNewLabel_3 = new JLabel("\u5B57\u4F53"); JComboBox comboBox = new JComboBox(); comboBox.setModel(new DefaultComboBoxModel(new String[] {"\u5B8B\u4F53", "\u9ED1\u4F53", "\u4EFF\u5B8B"})); JLabel lblNewLabel_4 = new JLabel("\u8868\u60C5"); JComboBox comboBox_1 = new JComboBox(); comboBox_1.setModel(new DefaultComboBoxModel(new String[] {"@_@", "~_~", "(^_^)", "O_O", ""})); JButton button_1 = new JButton("\u6E05\u5C4F"); button_1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { textArea.setText(""); } }); button_1.setFont(new Font("宋体", Font.PLAIN, 10)); JButton button_2 = new JButton("\u8FDE\u63A5"); button_2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { s=new Socket(textField.getText(),Integer.parseInt(textField_1.getText())); br=new BufferedReader(new InputStreamReader(s.getInputStream())); } catch (NumberFormatException | IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } }); button_2.setFont(new Font("宋体", Font.PLAIN, 10)); JButton button_3 = new JButton("\u79BB\u7EBF\u53D1\u9001"); button_3.addActionListener(new ActionListener() { /* * 本方法使用UDP协议进行离线发送，只要指定地址及对方端口，无论对方事后作出回应都可已发送消息 */ public void actionPerformed(ActionEvent arg0) { try { DatagramSocket sendSocket = new DatagramSocket(); String string = textArea_1.getText(); byte[] databyte = new byte[1000]; databyte = string.getBytes(); DatagramPacket sendPacket = new DatagramPacket(databyte, string.length(), InetAddress.getByName(textField.getText()),Integer.parseInt(textField_1.getText())); sendSocket.send(sendPacket); textArea.setText(textArea.getText()+"\n"+string); textArea_1.setText(""); } catch (SocketException | UnknownHostException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }); button_3.setFont(new Font("宋体", Font.PLAIN, 10)); GroupLayout gl_contentPane = new GroupLayout(contentPane); gl_contentPane.setHorizontalGroup( gl_contentPane.createParallelGroup(Alignment.TRAILING) .addGroup(gl_contentPane.createSequentialGroup() .addContainerGap() .addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING) .addComponent(textArea_1, GroupLayout.DEFAULT_SIZE, 714, Short.MAX_VALUE) .addComponent(textArea, GroupLayout.DEFAULT_SIZE, 714, Short.MAX_VALUE)) .addContainerGap()) .addGroup(gl_contentPane.createSequentialGroup() .addContainerGap(590, Short.MAX_VALUE) .addComponent(lblNewLabel) .addGap(60)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(10) .addComponent(lblNewLabel_1) .addPreferredGap(ComponentPlacement.RELATED) .addComponent(textField, GroupLayout.PREFERRED_SIZE, 85, GroupLayout.PREFERRED_SIZE) .addGap(18) .addComponent(lblNewLabel_2) .addPreferredGap(ComponentPlacement.UNRELATED) .addComponent(textField_1, GroupLayout.PREFERRED_SIZE, 41, GroupLayout.PREFERRED_SIZE) .addGap(39) .addComponent(lblNewLabel_3) .addPreferredGap(ComponentPlacement.RELATED) .addComponent(comboBox, GroupLayout.PREFERRED_SIZE, 53, GroupLayout.PREFERRED_SIZE) .addGap(18) .addComponent(lblNewLabel_4) .addPreferredGap(ComponentPlacement.RELATED) .addComponent(comboBox_1, GroupLayout.PREFERRED_SIZE, 73, GroupLayout.PREFERRED_SIZE) .addPreferredGap(ComponentPlacement.UNRELATED) .addComponent(button_1, GroupLayout.PREFERRED_SIZE, 54, GroupLayout.PREFERRED_SIZE) .addPreferredGap(ComponentPlacement.RELATED) .addComponent(button_2, GroupLayout.PREFERRED_SIZE, 54, GroupLayout.PREFERRED_SIZE) .addGap(89)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(440) .addComponent(button_3) .addPreferredGap(ComponentPlacement.RELATED) .addComponent(button, GroupLayout.PREFERRED_SIZE, 54, GroupLayout.PREFERRED_SIZE) .addPreferredGap(ComponentPlacement.UNRELATED) .addComponent(btnNewButton, GroupLayout.PREFERRED_SIZE, 68, GroupLayout.PREFERRED_SIZE) .addGap(83)) ); gl_contentPane.setVerticalGroup( gl_contentPane.createParallelGroup(Alignment.LEADING) .addGroup(gl_contentPane.createSequentialGroup() .addComponent(lblNewLabel) .addPreferredGap(ComponentPlacement.RELATED) .addComponent(textArea, GroupLayout.PREFERRED_SIZE, 251, GroupLayout.PREFERRED_SIZE) .addPreferredGap(ComponentPlacement.UNRELATED) .addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING) .addComponent(button_1, Alignment.TRAILING, GroupLayout.PREFERRED_SIZE, 21, GroupLayout.PREFERRED_SIZE) .addComponent(button_2, Alignment.TRAILING, GroupLayout.PREFERRED_SIZE, 21, GroupLayout.PREFERRED_SIZE)) .addPreferredGap(ComponentPlacement.RELATED) .addComponent(textArea_1, GroupLayout.PREFERRED_SIZE, 51, GroupLayout.PREFERRED_SIZE) .addPreferredGap(ComponentPlacement.RELATED, 9, Short.MAX_VALUE) .addGroup(gl_contentPane.createParallelGroup(Alignment.TRAILING) .addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE) .addComponent(button) .addComponent(button_3, GroupLayout.PREFERRED_SIZE, 21, GroupLayout.PREFERRED_SIZE)) .addComponent(btnNewButton, GroupLayout.PREFERRED_SIZE, 33, GroupLayout.PREFERRED_SIZE)) .addContainerGap()) .addGroup(gl_contentPane.createSequentialGroup() .addGap(282) .addComponent(comboBox_1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE) .addGap(109)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(285) .addComponent(lblNewLabel_4) .addGap(112)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(282) .addComponent(comboBox, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE) .addGap(109)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(285) .addComponent(lblNewLabel_3) .addGap(112)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(282) .addComponent(textField_1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE) .addGap(109)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(285) .addComponent(lblNewLabel_2) .addGap(112)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(282) .addComponent(textField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE) .addGap(109)) .addGroup(gl_contentPane.createSequentialGroup() .addGap(285) .addComponent(lblNewLabel_1) .addGap(112)) ); contentPane.setLayout(gl_contentPane); } }
