局域网间的点对点聊天

聊天已经成为我们日常生活的一部分，各种聊天的软件已经飞满了我们的世界。今天就让我们来探讨一下局域网间的点对点的聊天吧。

我们在Eclipse中创建我们的工程。

其中带有Frame名字字样的工程是有界面的。如何在Eclipse中创建有界面的工程呢？我使用的VE插件，具体怎么用，问问度娘吧。

ServerThread：

package com.server;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;import javax.swing.DefaultListModel;/* * ServerThread * 主要工作： * 1.等待客户端连接 * 2.接收客户端信息 * 3.接收到客户端信息后， *   将信息发送至ChatFrame窗口 */public class ServerThread implements Runnable {private ServerSocket server;private ChatFrame chatFrame;private String myName;private String friendName;public ServerThread(ServerSocket server,ChatFrame chatFrame,String myName){this.server=server;this.chatFrame=chatFrame;this.myName=myName;}@Overridepublic void run() {//等待客户连接//1.更新窗体内容String txt=this.chatFrame.getTxtpanMsgs().getText();txt+="正在等待客户端连接……\n";this.chatFrame.getTxtpanMsgs().setText(txt);//2.等该客户端连接try {Socket client=server.accept();//获取输入、输出流BufferedReader in =new BufferedReader(new InputStreamReader(client.getInputStream()));PrintWriter out=new PrintWriter(client.getOutputStream());//将输出流对象给ChatFramethis.chatFrame.setOut(out);//握手//1.先接收客户端的名字 friendName=in.readLine(); //加一步，更新好友列表 DefaultListModel model=(DefaultListModel)this.chatFrame.getListFriends().getModel(); model.addElement("全部好友："); model.addElement(friendName);//2.向客户端发送我的名字：out.println(myName);out.flush ();txt=this.chatFrame.getTxtpanMsgs().getText();txt+="与好友<"+friendName+">已经建立连接，"+"可以开始聊天了……\n";this.chatFrame.getTxtpanMsgs().setText(txt);//循环获取客户端信息do{String msg=in.readLine();txt=this.chatFrame.getTxtpanMsgs().getText();txt+=msg+"\n";this.chatFrame.getTxtpanMsgs().setText(txt);}while(true);} catch (IOException e) {//网络问题，或者对方下线}}}

ServerLoginFrame：

package com.server;import java.awt.Color;import java.awt.Dimension;import java.awt.Font;import java.awt.Rectangle;import java.awt.Toolkit;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.IOException;import java.net.ServerSocket;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextField;import javax.swing.SwingUtilities;public class ServerLoginFrame extends JFrame implements  ActionListener{private static final long serialVersionUID = 1L;private JPanel jContentPane = null;private JLabel jLabel = null;private JLabel jLabel1 = null;private JLabel labMsg = null;private JButton butLogin = null;private JButton butClose = null;private JTextField txtPort = null;private JTextField txtUserName = null;/** * This method initializes butLogin *  * @return javax.swing.JButton */private JButton getButLogin() {if (butLogin == null) {butLogin = new JButton();butLogin.setBounds(new Rectangle(180, 160, 107, 29));butLogin.setText("确定");butLogin.addActionListener(this);}return butLogin;}/** * This method initializes butClose *  * @return javax.swing.JButton */private JButton getButClose() {if (butClose == null) {butClose = new JButton();butClose.setBounds(new Rectangle(20, 161, 107, 29));butClose.setText("关闭");butClose.addActionListener(this);}return butClose;}/** * This method initializes txtPort *  * @return javax.swing.JTextField */private JTextField getTxtPort() {if (txtPort == null) {txtPort = new JTextField();txtPort.setBounds(new Rectangle(128, 33, 159, 28));}return txtPort;}/** * This method initializes txtUserName *  * @return javax.swing.JTextField */private JTextField getTxtUserName() {if (txtUserName == null) {txtUserName = new JTextField();txtUserName.setBounds(new Rectangle(128, 78, 159, 28));}return txtUserName;}/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubSwingUtilities.invokeLater(new Runnable() {public void run() {ServerLoginFrame thisClass = new ServerLoginFrame();thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);thisClass.setVisible(true);}});}/** * This is the default constructor */public ServerLoginFrame() {super();initialize();//将当前窗体显示在屏幕中央Toolkit kit=Toolkit.getDefaultToolkit();Dimension size=kit.getScreenSize();int screenWidth=size.width ;int screenHeight=size.height ;this.setLocation(screenWidth/2-this.getWidth()/2,screenHeight/2-this.getHeight()/2);}/** * This method initializes this *  * @return void */private void initialize() {this.setSize(323, 235);this.setContentPane(getJContentPane());this.setResizable(false);this.setTitle("启动服务器");}/** * This method initializes jContentPane *  * @return javax.swing.JPanel */private JPanel getJContentPane() {if (jContentPane == null) {labMsg = new JLabel();labMsg.setBounds(new Rectangle(127, 122, 161, 24));labMsg.setFont(new Font("Dialog", Font.BOLD, 12));labMsg.setForeground(new Color(255, 7, 5));labMsg.setText("");jLabel1 = new JLabel();jLabel1.setBounds(new Rectangle(15, 77, 112, 28));jLabel1.setText("请输入您的昵称：");jLabel = new JLabel();jLabel.setBounds(new Rectangle(16, 33, 108, 28));jLabel.setText("请指定端口号：");jContentPane = new JPanel();jContentPane.setLayout(null);jContentPane.add(jLabel, null);jContentPane.add(jLabel1, null);jContentPane.add(labMsg, null);jContentPane.add(getButLogin(), null);jContentPane.add(getButClose(), null);jContentPane.add(getTxtPort(), null);jContentPane.add(getTxtUserName(), null);}return jContentPane;}@Overridepublic void actionPerformed(ActionEvent e) {if(e.getSource()==this.butClose){//按了关闭按钮System.exit(0);//结束应用程序}if (e.getSource()==this.butLogin){//按了确定按钮//从txtPort文本框中获取文本String port=this.txtPort.getText ();//从txtUserName文本框中获取文本String userName=this.txtUserName.getText();//验证端口号//1.验证每一位是否为数字for(int i=0;i<port.length();i++){char c=port.charAt(i);if (c<'0'||c>'9'){this.labMsg.setText("端口号应全部为数字");return;}}//2.验证是否是1——5位的长度if(port.length()<1||port.length()>5){this.labMsg.setText("端口号应为1——5位数字！");return ;}//3.转换为int，判断是否大于65535int intPort=Integer.parseInt(port);if (intPort<1||intPort >65535){this.labMsg.setText("端口号应为1——65535");return;}//4.验证第一个字符不能为0char c=port.charAt(0);if (c=='0'){this.labMsg.setText("第一个数字不能为0");return;}//实例化ServerSockettry {ServerSocket server=new ServerSocket (intPort);//1.先显示聊天窗体ChatFrame chatFrame=new ChatFrame(userName);chatFrame.setVisible(true);//2.启动等待线程，等待客户端连接ServerThread t=new ServerThread(server,chatFrame,userName);new Thread(t).start();//3.将自己销毁this.dispose();} catch (IOException e1) {this.labMsg.setText("端口已被占用");return;}}}}  //  @jve:decl-index=0:visual-constraint="118,22"

ChatFrame：

package com.server;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.GridBagLayout;import java.awt.GridLayout;import java.awt.Toolkit;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.PrintWriter;import javax.swing.DefaultListModel;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JList;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.JTextPane;public class ChatFrame extends JFrame implements ActionListener {private static final long serialVersionUID = 1L;private JPanel jContentPane = null;private JPanel jPanel = null;private JPanel jPanel1 = null;private JPanel jPanel3 = null;private JPanel jPanel4 = null;private JList listFriends = null;private JPanel jPanel2 = null;private JTextPane txtpanMsgs = null;private JPanel jPanel5 = null;private JPanel jPanel6 = null;private JTextArea txtMsg = null;private JButton butSend = null;private JButton butClose = null;private JPanel jPanel7 = null;private JPanel jPanel8 = null;/** * This is the default constructor *///用于向客户端发送消息private PrintWriter out=null;private String myName;public ChatFrame(String myName) {super();initialize();this.myName=myName;//将当前窗体显示在屏幕中央Toolkit kit=Toolkit.getDefaultToolkit();Dimension size=kit.getScreenSize();int screenWidth=size.width ;int screenHeight=size.height ;this.setLocation(screenWidth/2-this.getWidth()/2,screenHeight/2-this.getHeight()/2);}//设置PrintWriter对象public void setOut(PrintWriter out){this.out=out;}/** * This method initializes this *  * @return void */private void initialize() {this.setSize(600, 429);this.setContentPane(getJContentPane());this.setTitle("聊天");}/** * This method initializes jContentPane *  * @return javax.swing.JPanel */private JPanel getJContentPane() {if (jContentPane == null) {BorderLayout borderLayout = new BorderLayout();borderLayout.setHgap(10);borderLayout.setVgap(10);jContentPane = new JPanel();jContentPane.setLayout(borderLayout);jContentPane.add(getJPanel(), BorderLayout.NORTH);jContentPane.add(getJPanel1(), BorderLayout.WEST);jContentPane.add(getJPanel3(), BorderLayout.EAST);jContentPane.add(getJPanel4(), BorderLayout.CENTER);}return jContentPane;}/** * This method initializes jPanel *  * @return javax.swing.JPanel */private JPanel getJPanel() {if (jPanel == null) {jPanel = new JPanel();jPanel.setLayout(new GridBagLayout());jPanel.setPreferredSize(new Dimension(0, 30));jPanel.setBackground(new Color(60, 238, 238));}return jPanel;}/** * This method initializes jPanel1 *  * @return javax.swing.JPanel */private JPanel getJPanel1() {if (jPanel1 == null) {jPanel1 = new JPanel();jPanel1.setLayout(new GridBagLayout());jPanel1.setPreferredSize(new Dimension(10, 0));jPanel1.setBackground(new Color(238, 41, 206));}return jPanel1;}/** * This method initializes jPanel3 *  * @return javax.swing.JPanel */private JPanel getJPanel3() {if (jPanel3 == null) {jPanel3 = new JPanel();jPanel3.setLayout(new BorderLayout());jPanel3.setPreferredSize(new Dimension(200, 0));jPanel3.setBackground(new Color(238, 200, 66));jPanel3.add(getListFriends(), BorderLayout.CENTER);}return jPanel3;}/** * This method initializes jPanel4 *  * @return javax.swing.JPanel */private JPanel getJPanel4() {if (jPanel4 == null) {jPanel4 = new JPanel();jPanel4.setLayout(new BorderLayout());jPanel4.setBackground(new Color(130, 217, 24));jPanel4.add(getJPanel2(), BorderLayout.SOUTH);JScrollPane js =new JScrollPane(getTxtpanMsgs());jPanel4.add(js, BorderLayout.CENTER);}return jPanel4;}/** * This method initializes listFriends *  * @return javax.swing.JList */public JList getListFriends() {if (listFriends == null) {listFriends = new JList();//DefaultListModel管理JList 中的内容DefaultListModel model=new DefaultListModel();listFriends.setModel(model);}return listFriends;}/** * This method initializes jPanel2 *  * @return javax.swing.JPanel */private JPanel getJPanel2() {if (jPanel2 == null) {jPanel2 = new JPanel();jPanel2.setLayout(new BorderLayout());jPanel2.setPreferredSize(new Dimension(0, 150));jPanel2.setBackground(new Color(23, 37, 137));jPanel2.add(getJPanel5(), BorderLayout.NORTH);jPanel2.add(getJPanel6(), BorderLayout.SOUTH);JScrollPane js=new JScrollPane(this.getTxtMsg());jPanel2.add(js, BorderLayout.CENTER);}return jPanel2;}/** * This method initializes txtpanMsgs *  * @return javax.swing.JTextPane */public JTextPane getTxtpanMsgs() {if (txtpanMsgs == null) {txtpanMsgs = new JTextPane();txtpanMsgs.setEditable(false);}return txtpanMsgs;}/** * This method initializes jPanel5 *  * @return javax.swing.JPanel */private JPanel getJPanel5() {if (jPanel5 == null) {jPanel5 = new JPanel();jPanel5.setLayout(new GridBagLayout());jPanel5.setPreferredSize(new Dimension(0, 30));}return jPanel5;}/** * This method initializes jPanel6 *  * @return javax.swing.JPanel */private JPanel getJPanel6() {if (jPanel6 == null) {GridLayout gridLayout = new GridLayout();gridLayout.setRows(1);gridLayout.setHgap(10);gridLayout.setVgap(10);gridLayout.setColumns(4);jPanel6 = new JPanel();jPanel6.setLayout(gridLayout);jPanel6.setPreferredSize(new Dimension(0, 30));jPanel6.add(getJPanel7(), null);jPanel6.add(getJPanel8(), null);jPanel6.add(getButClose(), null);jPanel6.add(getButSend(), null);}return jPanel6;}/** * This method initializes txtMsg *  * @return javax.swing.JTextArea */private JTextArea getTxtMsg() {if (txtMsg == null) {txtMsg = new JTextArea();}return txtMsg;}/** * This method initializes butSend *  * @return javax.swing.JButton */private JButton getButSend() {if (butSend == null) {butSend = new JButton();butSend.setText("发送");butSend.addActionListener(this);}return butSend;}/** * This method initializes butClose *  * @return javax.swing.JButton */private JButton getButClose() {if (butClose == null) {butClose = new JButton();butClose.setText("关闭");butClose.addActionListener(this);}return butClose;}/** * This method initializes jPanel7 *  * @return javax.swing.JPanel */private JPanel getJPanel7() {if (jPanel7 == null) {jPanel7 = new JPanel();jPanel7.setLayout(new GridBagLayout());}return jPanel7;}/** * This method initializes jPanel8 *  * @return javax.swing.JPanel */private JPanel getJPanel8() {if (jPanel8 == null) {jPanel8 = new JPanel();jPanel8.setLayout(new GridBagLayout());}return jPanel8;}@Overridepublic void actionPerformed(ActionEvent e) {if (e.getSource()==this.butClose){}if (e.getSource()==this.butSend){if (out==null){return;}//向客户端发出信息String msg=this.txtMsg.getText();msg="<"+myName+"说：>"+msg;out.println(msg);out.flush();//更新自己的聊天信息String txt=this.getTxtpanMsgs().getText();txt+=msg+"\n";this.txtpanMsgs.setText(txt);this.txtMsg.setText("");}}}  //  @jve:decl-index=0:visual-constraint="10,10"

ClientThread：

package com.client;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.Socket;public class ClientThread implements Runnable {private Socket client;private String myName;private BufferedReader in=null;private ClientChatFrame chatFrame;public ClientThread(Socket client,String myName,ClientChatFrame chatFrame){this.client=client;this.myName=myName;this.chatFrame=chatFrame;try {this.in=new BufferedReader(new InputStreamReader(client.getInputStream()));} catch (IOException e) {}}@Overridepublic void run() {//循环，获取服务器端信息try {do{String msg=in.readLine();//更新聊天记录String txt=this.chatFrame.getTxtpanMsgs().getText();txt+=msg+"\n";this.chatFrame.getTxtpanMsgs().setText(txt);}while(true);} catch (IOException e) {System.out.print("断线了，需要重新连接！");}}}

ClientLoginFrame：

package com.client;import java.awt.Rectangle;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextField;import javax.swing.SwingUtilities;import java.awt.Font;import java.awt.Color;import java.awt.Dimension;import java.awt.Toolkit;public class ClientLoginFrame extends JFrame implements  ActionListener{private static final long serialVersionUID = 1L;private JPanel jContentPane = null;private JLabel jLabel = null;private JLabel jLabel1 = null;private JLabel labMsg = null;private JButton butLogin = null;private JButton butClose = null;private JTextField txtPort = null;private JTextField txtUserName = null;private JLabel jLabel2 = null;private JTextField txtIP = null;/** * This method initializes butLogin *  * @return javax.swing.JButton */private JButton getButLogin() {if (butLogin == null) {butLogin = new JButton();butLogin.setBounds(new Rectangle(186, 181, 107, 29));butLogin.setText("确定");butLogin.addActionListener(this);}return butLogin;}/** * This method initializes butClose *  * @return javax.swing.JButton */private JButton getButClose() {if (butClose == null) {butClose = new JButton();butClose.setBounds(new Rectangle(26, 182, 107, 29));butClose.setText("关闭");butClose.addActionListener(this);}return butClose;}/** * This method initializes txtPort *  * @return javax.swing.JTextField */private JTextField getTxtPort() {if (txtPort == null) {txtPort = new JTextField();txtPort.setBounds(new Rectangle(134, 58, 159, 28));}return txtPort;}/** * This method initializes txtUserName *  * @return javax.swing.JTextField */private JTextField getTxtUserName() {if (txtUserName == null) {txtUserName = new JTextField();txtUserName.setBounds(new Rectangle(134, 98, 159, 28));}return txtUserName;}/** * This method initializes txtIP *  * @return javax.swing.JTextField */private JTextField getTxtIP() {if (txtIP == null) {txtIP = new JTextField();txtIP.setBounds(new Rectangle(134, 18, 159, 28));}return txtIP;}/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubSwingUtilities.invokeLater(new Runnable() {public void run() {ClientLoginFrame thisClass = new ClientLoginFrame();thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);thisClass.setVisible(true);}});}/** * This is the default constructor */public ClientLoginFrame() {super();initialize();//将当前窗体显示在屏幕中央Toolkit kit=Toolkit.getDefaultToolkit();Dimension size=kit.getScreenSize();int screenWidth=size.width ;int screenHeight=size.height ;this.setLocation(screenWidth/2-this.getWidth()/2,screenHeight/2-this.getHeight()/2);}/** * This method initializes this *  * @return void */private void initialize() {this.setSize(306, 252);this.setContentPane(getJContentPane());this.setResizable(false);this.setTitle("启动客户端");}/** * This method initializes jContentPane *  * @return javax.swing.JPanel */private JPanel getJContentPane() {if (jContentPane == null) {jLabel2 = new JLabel();jLabel2.setBounds(new Rectangle(23, 17, 107, 29));jLabel2.setText("请指定服务器IP：");labMsg = new JLabel();labMsg.setBounds(new Rectangle(133, 143, 161, 24));labMsg.setFont(new Font("Dialog", Font.BOLD, 12));labMsg.setForeground(new Color(255, 7, 5));labMsg.setText("");jLabel1 = new JLabel();jLabel1.setBounds(new Rectangle(21, 98, 112, 28));jLabel1.setText("请输入您的昵称：");jLabel = new JLabel();jLabel.setBounds(new Rectangle(3, 58, 133, 28));jLabel.setText("请指定服务器端口号：");jContentPane = new JPanel();jContentPane.setLayout(null);jContentPane.add(jLabel, null);jContentPane.add(jLabel1, null);jContentPane.add(labMsg, null);jContentPane.add(getButLogin(), null);jContentPane.add(getButClose(), null);jContentPane.add(getTxtPort(), null);jContentPane.add(getTxtUserName(), null);jContentPane.add(jLabel2, null);jContentPane.add(getTxtIP(), null);}return jContentPane;}@Overridepublic void actionPerformed(ActionEvent e) {if(e.getSource()==this.butClose){//按了关闭按钮System.exit(0);//结束应用程序}if (e.getSource()==this.butLogin){//按了确定按钮//获取IPString ip=this.txtIP.getText();//从txtPort文本框中获取文本String port=this.txtPort.getText ();//从txtUserName文本框中获取文本String userName=this.txtUserName.getText();//验证端口号//1.验证每一位是否为数字for(int i=0;i<port.length();i++){char c=port.charAt(i);if (c<'0'||c>'9'){this.labMsg.setText("端口号应全部为数字");return;}}//2.验证是否是1——5位的长度if(port.length()<1||port.length()>5){this.labMsg.setText("端口号应为1——5位数字！");return ;}//3.转换为int，判断是否大于65535int intPort=Integer.parseInt(port);if (intPort<1||intPort >65535){this.labMsg.setText("端口号应为1——65535");return;}//4.验证第一个字符不能为0char c=port.charAt(0);if (c=='0'){this.labMsg.setText("第一个数字不能为0");return;}//实例化ServerSockettry {Socket client=new Socket (ip,intPort);//1.先显示聊天窗体ClientChatFrame chatFrame=new ClientChatFrame(client,userName);chatFrame.setVisible(true);//2.启动等待线程，等待客户端连接ClientThread t=new ClientThread(client,userName,chatFrame);new Thread(t).start();//3.将自己销毁this.dispose();} catch (IOException e1) {this.labMsg.setText("端口已被占用");return;}}}}  //  @jve:decl-index=0:visual-constraint="118,22"

ClientCharFrame：

package com.client;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.GridBagLayout;import java.awt.GridLayout;import java.awt.Toolkit;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.Socket;import javax.swing.DefaultListModel;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JList;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.JTextPane;public class ClientChatFrame extends JFrame implements ActionListener {private static final long serialVersionUID = 1L;private JPanel jContentPane = null;private JPanel jPanel = null;private JPanel jPanel1 = null;private JPanel jPanel3 = null;private JPanel jPanel4 = null;private JList listFriends = null;private JPanel jPanel2 = null;private JTextPane txtpanMsgs = null;private JPanel jPanel5 = null;private JPanel jPanel6 = null;private JTextArea txtMsg = null;private JButton butSend = null;private JButton butClose = null;private JPanel jPanel7 = null;private JPanel jPanel8 = null;private Socket client =null;private String myName;private PrintWriter out=null;private BufferedReader in =null;private String friendName=null;/** * This is the default constructor */public ClientChatFrame(Socket client,String myName) {super();initialize();//将当前窗体显示在屏幕中央Toolkit kit=Toolkit.getDefaultToolkit();Dimension size=kit.getScreenSize();int screenWidth=size.width ;int screenHeight=size.height ;this.setLocation(screenWidth/2-this.getWidth()/2,screenHeight/2-this.getHeight()/2);this.client=client;this.myName=myName;try {this.out=new PrintWriter(client.getOutputStream());out.println(this.myName );out.flush();this.in =new BufferedReader(new InputStreamReader(client.getInputStream()));//接收服务器的名字this.friendName =in.readLine();//1.更新好友列表DefaultListModel m=(DefaultListModel)this.getListFriends().getModel();m.addElement("全部好友：");m.addElement(friendName);//2.更新聊天记录String txt=this.getTxtpanMsgs().getText ();txt+=" "+friendName+ "已登录，可以开始聊天了……\n";this.getTxtpanMsgs().setText(txt);} catch (IOException e) {}//发送第一次握手信息}/** * This method initializes this *  * @return void */private void initialize() {this.setSize(600, 429);this.setContentPane(getJContentPane());this.setTitle("聊天");}/** * This method initializes jContentPane *  * @return javax.swing.JPanel */private JPanel getJContentPane() {if (jContentPane == null) {BorderLayout borderLayout = new BorderLayout();borderLayout.setHgap(10);borderLayout.setVgap(10);jContentPane = new JPanel();jContentPane.setLayout(borderLayout);jContentPane.add(getJPanel(), BorderLayout.NORTH);jContentPane.add(getJPanel1(), BorderLayout.WEST);jContentPane.add(getJPanel3(), BorderLayout.EAST);jContentPane.add(getJPanel4(), BorderLayout.CENTER);}return jContentPane;}/** * This method initializes jPanel *  * @return javax.swing.JPanel */private JPanel getJPanel() {if (jPanel == null) {jPanel = new JPanel();jPanel.setLayout(new GridBagLayout());jPanel.setPreferredSize(new Dimension(0, 30));jPanel.setBackground(new Color(60, 238, 238));}return jPanel;}/** * This method initializes jPanel1 *  * @return javax.swing.JPanel */private JPanel getJPanel1() {if (jPanel1 == null) {jPanel1 = new JPanel();jPanel1.setLayout(new GridBagLayout());jPanel1.setPreferredSize(new Dimension(10, 0));jPanel1.setBackground(new Color(238, 41, 206));}return jPanel1;}/** * This method initializes jPanel3 *  * @return javax.swing.JPanel */private JPanel getJPanel3() {if (jPanel3 == null) {jPanel3 = new JPanel();jPanel3.setLayout(new BorderLayout());jPanel3.setPreferredSize(new Dimension(200, 0));jPanel3.setBackground(new Color(238, 200, 66));jPanel3.add(getListFriends(), BorderLayout.CENTER);}return jPanel3;}/** * This method initializes jPanel4 *  * @return javax.swing.JPanel */private JPanel getJPanel4() {if (jPanel4 == null) {jPanel4 = new JPanel();jPanel4.setLayout(new BorderLayout());jPanel4.setBackground(new Color(130, 217, 24));jPanel4.add(getJPanel2(), BorderLayout.SOUTH);JScrollPane js=new JScrollPane(getTxtpanMsgs());jPanel4.add(js, BorderLayout.CENTER);}return jPanel4;}/** * This method initializes listFriends *  * @return javax.swing.JList */private JList getListFriends() {if (listFriends == null) {listFriends = new JList();listFriends.setModel(new DefaultListModel());}return listFriends;}/** * This method initializes jPanel2 *  * @return javax.swing.JPanel */private JPanel getJPanel2() {if (jPanel2 == null) {jPanel2 = new JPanel();jPanel2.setLayout(new BorderLayout());jPanel2.setPreferredSize(new Dimension(0, 150));jPanel2.setBackground(new Color(23, 37, 137));jPanel2.add(getJPanel5(), BorderLayout.NORTH);jPanel2.add(getJPanel6(), BorderLayout.SOUTH);JScrollPane js=new JScrollPane(this.getTxtMsg());jPanel2.add(js, BorderLayout.CENTER);}return jPanel2;}/** * This method initializes txtpanMsgs *  * @return javax.swing.JTextPane */public JTextPane getTxtpanMsgs() {if (txtpanMsgs == null) {txtpanMsgs = new JTextPane();}return txtpanMsgs;}/** * This method initializes jPanel5 *  * @return javax.swing.JPanel */private JPanel getJPanel5() {if (jPanel5 == null) {jPanel5 = new JPanel();jPanel5.setLayout(new GridBagLayout());jPanel5.setPreferredSize(new Dimension(0, 30));}return jPanel5;}/** * This method initializes jPanel6 *  * @return javax.swing.JPanel */private JPanel getJPanel6() {if (jPanel6 == null) {GridLayout gridLayout = new GridLayout();gridLayout.setRows(1);gridLayout.setHgap(10);gridLayout.setVgap(10);gridLayout.setColumns(4);jPanel6 = new JPanel();jPanel6.setLayout(gridLayout);jPanel6.setPreferredSize(new Dimension(0, 30));jPanel6.add(getJPanel7(), null);jPanel6.add(getJPanel8(), null);jPanel6.add(getButClose(), null);jPanel6.add(getButSend(), null);}return jPanel6;}/** * This method initializes txtMsg *  * @return javax.swing.JTextArea */private JTextArea getTxtMsg() {if (txtMsg == null) {txtMsg = new JTextArea();}return txtMsg;}/** * This method initializes butSend *  * @return javax.swing.JButton */private JButton getButSend() {if (butSend == null) {butSend = new JButton();butSend.setText("发送");butSend.addActionListener(this);}return butSend;}/** * This method initializes butClose *  * @return javax.swing.JButton */private JButton getButClose() {if (butClose == null) {butClose = new JButton();butClose.setText("关闭");butClose.addActionListener(this);}return butClose;}/** * This method initializes jPanel7 *  * @return javax.swing.JPanel */private JPanel getJPanel7() {if (jPanel7 == null) {jPanel7 = new JPanel();jPanel7.setLayout(new GridBagLayout());}return jPanel7;}/** * This method initializes jPanel8 *  * @return javax.swing.JPanel */private JPanel getJPanel8() {if (jPanel8 == null) {jPanel8 = new JPanel();jPanel8.setLayout(new GridBagLayout());}return jPanel8;}@Overridepublic void actionPerformed(ActionEvent e) {if(e.getSource()==this.butClose){//结束应用程序System.exit(0);}if(e.getSource() ==this.butSend){String txt=this.txtMsg.getText();txt="<"+myName+">说："+ txt;out.println(txt);out.flush();//更新自己的聊天记录String str=this.txtpanMsgs .getText();str+=txt+"\n";this.txtpanMsgs.setText(str);//清空一下文本框this.txtMsg.setText("");}}}  //  @jve:decl-index=0:visual-constraint="27,-2"

运行一下ServerLoginFrame:

确定后：

登录客户端：

确定后：

聊天情况：

这个聊天的程序到这里并不算结束，群聊的功能也是可以实现的，有兴趣的可以先自己试试吧。