类似于QQ聊天的简易聊天室

import javax.swing.*; import java.awt.*; import java.net.*; import java.io.*; import java.awt.event.*; public class Client extends JFrame implements Runnable,ActionListener { //客户端程序 //创建Socket通信端口号常量 public static final int PORT = 8765; //创建客户端界面面板 JPanel jPanel1 = new JPanel(); JPanel jPanel2 = new JPanel(); JPanel jPanel3 = new JPanel(); JPanel jPanel4 = new JPanel(); //创建布局管理方式 BorderLayout borderLayout1 = new BorderLayout();//边框布局 JScrollPane jScrollPane2 = new JScrollPane(); FlowLayout flowLayout1 = new FlowLayout();//流动布局 GridLayout gridLayout1 = new GridLayout();//网格布局 //创建客户端界面中的按钮 JButton jButton1 = new JButton(); JButton jButton2 = new JButton(); JButton jButton3 = new JButton(); //创建用户名录入对话框 JTextField jTextField1 = new JTextField(); //创建聊天对话显示区域 JTextArea jTextArea1 = new JTextArea(); //创建发言输入框 JTextField jTextField2 = new JTextField(); //创建服务器ip地址输入框 JTextField jTextField3 = new JTextField(); //创建服务器端口号输入框 JTextField jTextField4 = new JTextField(); //创建标签对象 JLabel jLabel1 = new JLabel(); JLabel jLabel2 = new JLabel(); JLabel jLabel3 = new JLabel(); Socket socket; //声明套接字对象 Thread thread; //声明线程对象 //声明客户器端数据输入输出流 DataInputStream in; DataOutputStream out; boolean bool=false; //声明字符串，name存储用户名，chat_txt存储发言信息，chat_in存储从服务器接收到的信息 String name,chat_txt,chat_in; String ip=null; public Client() { super("Client"); //设置内容面板无布局方式 getContentPane().setLayout(null); //初始化客户端界面中的各个组件，包括位置、大小以及处初始显示内容 //初始化输入框组件 jTextArea1.setText(""); jTextField1.setText("用户名输入"); jTextField1.setBounds(new Rectangle(103, 4, 77, 25)); jTextField2.setText(""); jTextField2.setBounds(new Rectangle(4, 6, 311, 22)); jTextField3.setText(""); jTextField4.setText("8765"); //初始化按钮组件 jButton1.setBounds(new Rectangle(190, 4, 100, 25)); jButton1.setToolTipText(""); jButton1.setText("进入聊天室"); jButton1.addActionListener(this); jButton2.setBounds(new Rectangle(322, 5, 73, 25)); jButton2.setText("发送"); jButton2.addActionListener(this); jButton3.setBounds(new Rectangle(302, 5, 97, 24)); jButton3.setText("退出聊天室"); jButton3.addActionListener(this); //初始化面板组件 jPanel1.setLayout(null); jPanel1.setBounds(new Rectangle(0, 0, 400, 35)); jPanel2.setBounds(new Rectangle(264, 35, 136, 230)); jPanel2.setLayout(gridLayout1); jPanel3.setBounds(new Rectangle(0, 35, 255, 230)); jPanel3.setLayout(borderLayout1); jPanel4.setBounds(new Rectangle(0, 265, 400, 35)); jPanel4.setLayout(null); //初始化标签组件 jLabel1.setText("用户名"); jLabel1.setBounds(new Rectangle(46, 5, 109, 23)); jLabel2.setText("服务器地址"); jLabel3.setText("端口"); //添加组件至指定面板中的固定位置 gridLayout1.setColumns(1); gridLayout1.setRows(4); this.getContentPane().add(jPanel1, flowLayout1); this.getContentPane().add(jPanel2, gridLayout1); this.getContentPane().add(jPanel4, flowLayout1); this.getContentPane().add(jPanel3, flowLayout1); jPanel1.add(jLabel1); jPanel1.add(jTextField1, null); jPanel1.add(jButton1, null); jPanel1.add(jButton3); jPanel2.add(jLabel2); jPanel2.add(jTextField3); jPanel2.add(jLabel3); jPanel2.add(jTextField4); jPanel3.add(jScrollPane2, java.awt.BorderLayout.CENTER); jScrollPane2.getViewport().add(jTextArea1); jPanel4.add(jTextField2); jPanel4.add(jButton2); this.setSize(400,400); this.setVisible(true); } public static void main(String[] args) { Client client = new Client(); client.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public void run() //客户端线程启动后的动作 { while(true) //循环执行 { try { //读取服务器发送来的数据信息，并显示在对跨窗口中 chat_in = in.readUTF(); jTextArea1.append(chat_in); } catch(IOException e){} } } //界面按钮的事件处理机制 public void actionPerformed(ActionEvent e) { if(e.getSource() == jButton1) { name=jTextField1.getText(); ip=jTextField3.getText(); if(name!="用户名输入"&&ip!=null) { try { //创建Socket对象 socket = new Socket(ip, PORT); //创建一个流套接字并将其连接到指定 IP 地址的指定端口号。 //创建客户端数据输入输出流，用于对服务器端发送或接收数据 in = new DataInputStream(socket.getInputStream()); out = new DataOutputStream(socket.getOutputStream()); } catch (IOException e1) {System.out.println("can not connect");} thread = new Thread(this); thread.start(); bool = true; } } else if(e.getSource() == jButton2) { chat_txt=jTextField2.getText(); if(chat_txt!=null) { //发言，向服务器发送发言的信息 try{out.writeUTF(jTextField1.getText()+"对大家说："+chat_txt+"\n");} catch(IOException e2){} } else { try{out.writeUTF("请说话");} catch(IOException e3){} } } else if(e.getSource() == jButton3) { if(bool==true) { try { socket.close(); } catch (IOException e4) {} } thread.destroy(); bool=false; this.setVisible(false); } } }