JAVA 基于TCP协议编写的Socket聊天室程序

 使用Socket套接字进行编程，完成的是基于TCP可靠服务实现服务器与客户端的双通信。

package com.han;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.*;
import java.net.*;
import javax.swing.JDialog;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
/**
 * 本程序实现了一个TCP程序的服务器编程部分。
 * 使用Socket套接字进行编程，完成的是基于TCP可靠服务实现与客户端的双通信。
 * 客户端的编程见本包中的类Client
 * @author HAN
 *
 */
@SuppressWarnings("serial")
public class Server extends JDialog{
	private BufferedReader reader;
	private PrintWriter writer;
	private ServerSocket server;
	private Socket socket;
	private JTextArea ta=new JTextArea();
	private JScrollPane sp=new JScrollPane(ta);
	private JTextField tf=new JTextField();
	Container cc;
	public Server(String title) {
		setTitle(title);
		addWindowListener(new WindowAdapter() {
			public void windowClosing (WindowEvent we) {
				dispose();  //撤销dialog一切相关资源
				System.exit(0); //正常退出程序
			}
		});
		cc=getContentPane();
		setLayout(null);
		ta.setLineWrap(true);
		ta.setEditable(false);
		sp.setBounds(0,0,300,342);
		tf.setBounds(0,342,300,25);
		cc.add(sp);
		cc.add(tf);
		tf.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				try {
					writer=new PrintWriter(socket.getOutputStream(),true);
				} catch (IOException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
				writer.println(tf.getText());
				ta.append("User1："+tf.getText()+'\n');
				tf.setText("");
			}
		});
	}
	void getserver(){
		try{
			server=new ServerSocket(8998);
			ta.append("服务器套接字已经创建成功\n");
			while(true){
				ta.append("等待客户机的连接\n");
				socket=server.accept();
				ta.append("客户机已连接\n");
				reader=new BufferedReader(new InputStreamReader(socket.getInputStream()));
				getClientMessage();
			}
		}catch(Exception e){
			e.printStackTrace();
		}
	}
	private void getClientMessage(){
		try {
			while(true){
				String news=reader.readLine();
				if(news!=null){
					ta.append("User2："+news+"\n");
				}else{
					ta.append("User2（客户端） 已断开链接\n");
					break;
				}
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		try{
			if(reader!=null){
				reader.close();
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if(socket!=null){
			try {
				socket.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	public static void main(String[] args) {
		Server user1=new Server("User1");
		user1.setBounds(0,0,300,400);
		user1.setResizable(false);
		user1.setVisible(true);
		user1.getserver();	
	}
}

package com.han;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import javax.swing.*;
/**
 * 本程序实现了一个TCP程序的客户端编程部分。
 * 使用Socket套接字进行编程，完成的是基于TCP可靠服务实现与服务器的双通信。
 * 服务器的编程见本包中的类Server
 * 可以在不同的平台与不同的机器上运行，只是要把代码中写的IP地址修改为运行服务器程序Server的机器的IP地址。
 * @author HAN
 *
 */
@SuppressWarnings("serial")
public class Client extends JDialog{
	private BufferedReader reader;
	private PrintWriter writer;
	private Socket socket;
	private JTextArea ta=new JTextArea();
	private JScrollPane sp=new JScrollPane(ta);
	private JTextField tf=new JTextField();
	Container cc;
	public Client(String title) {
		setTitle(title);
		addWindowListener(new WindowAdapter() {
			public void windowClosing (WindowEvent we) {
				dispose();  //撤销dialog一切相关资源
				System.exit(0); //正常退出程序
			}
		});
		cc=getContentPane();
		setLayout(null);
		ta.setLineWrap(true);
		ta.setEditable(false);
		sp.setBounds(0,0,300,342);
		tf.setBounds(0,342,300,25);
		cc.add(sp);
		cc.add(tf);
		tf.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				writer.println(tf.getText());
				ta.append("User2："+tf.getText()+'\n');
				tf.setText("");
			}
		});
	}
	private void connect(){
		ta.append("尝试连接\n");
		try {
			socket=new Socket("192.168.1.3",8998);
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		try {
			writer=new PrintWriter(socket.getOutputStream(),true);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		ta.append("完成连接\n");
	}
	
	private void getClientMessage(){
		try {
			reader=new BufferedReader(new InputStreamReader(socket.getInputStream()));
			while(true){
				String news=reader.readLine();
				if(news!=null){
					ta.append("User1："+news+"\n");
				}else{
					ta.append("User1（服务器） 已断开链接，等待服务器重连之时，重启User2（客户端）进行通信\n");
					break;
				}
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			ta.append("User1（服务器） 已断开链接，等待服务器重连之时，重启User2（客户端）进行通信\n");
			e.printStackTrace();
		}
		try{
			if(reader!=null){
				reader.close();
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if(socket!=null){
			try {
				socket.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	public static void main(String[] args) {
		Client user2=new Client("User2");
		user2.setBounds(0,0,300,400);
		user2.setVisible(true);
		user2.setResizable(false);
		user2.connect();
		user2.getClientMessage();
	}
}