java网络编程1

客户端程序

import java.awt.Button;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import javax.swing.Box;
import javax.swing.JFrame;


public class Constom extends JFrame implements ActionListener, Runnable{
	Button bt01,bt02;
	TextField text;
	TextArea area;
	Thread thread;
	Socket socket;
	DataInputStream dread;
	DataOutputStream dwrite;
	Constom()
	{
		bt01=new Button("连接服务器");
		text=new TextField(20);
		bt02=new Button("发送");
		area=new TextArea();
		bt02.setEnabled(false);
		bt01.addActionListener(this);
		bt02.addActionListener(this);
		Box box=Box.createVerticalBox();
		box.add(bt01);
		box.add(text);
		box.add(bt02);
		box.add(area);
		add(box);
		setVisible(true);
		setBounds(100, 100, 500, 500);
		validate();
	}
	@Override
	public void actionPerformed(ActionEvent arg0) {
		// TODO Auto-generated method stub
		if(arg0.getSource()==bt01)
		{
//			
//			if(socket.isConnected())
//			{
//				
//			}
//			else
			{
				
				try {
					socket=new Socket("127.0.0.1",3888);
//					InetAddress address=InetAddress.getByName("127.0.0.1");
//					InetSocketAddress socketAddress=new InetSocketAddress(address,3888);
					dread=new DataInputStream(socket.getInputStream());
					dwrite=new DataOutputStream(socket.getOutputStream());
					bt02.setEnabled(true);
					thread.start();
				} catch (UnknownHostException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			
		}
		if(arg0.getSource()==bt02)
		{
			String s=text.getText();
			String s1=null;
			try {
				dwrite.writeUTF(s);
				s1=dread.readUTF();
				area.append(s1+"\n");
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	@Override
	public void run() {
		// TODO Auto-generated method stub
		String s=null;
		while(true)
		{
			try {
				s=dread.readUTF();
				area.setText(s+"\n");
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
				System.out.println("与服务器断开");
			}
		}
		
		
	}
 	

}

服务器程序

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;


public class MySercive {

	/**
	 * @param args
	 */
	public static void main(String[] args)  {
		// TODO Auto-generated method stub
		ServerSocket sevice = null;
		Socket you = null;
		DataInputStream dread;
		DataOutputStream dwrite;
		sThread thread;
		while(true)
		{
			try {
				sevice=new ServerSocket(3888);
			} catch (IOException e) {
				// TODO Auto-generated catch block
				System.out.println("正在监听");
				e.printStackTrace();
			}
			try {
				System.out.println("等待客户呼叫");
				you=sevice.accept();
				System.out.println("用户IP:"+you.getInetAddress());
			
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			if(you!=null)
			{
				thread=new sThread(you);
				thread.start();
			}
		}


	}
	
}

服务器线程

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.util.StringTokenizer;


public class sThread extends Thread{
	Socket socket;
	DataInputStream dread;
	DataOutputStream dwrite;
	sThread(Socket t)
	{
		this.socket=t;
		try {
			dread=new DataInputStream(socket.getInputStream());
			dwrite=new DataOutputStream(socket.getOutputStream());
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
	@Override
	public void run() {
		// TODO Auto-generated method stub
		super.run();
		String s=null;
		double[] d=new double[3];
		int i=0;
		while(true)
		{
			try {
				i=0;
				s=dread.readUTF();
				StringTokenizer fenxi=new StringTokenizer(s,",");
				while(fenxi.hasMoreTokens())
				{
					String temp=fenxi.nextToken();
					d[i]=Double.valueOf(temp).doubleValue();i++;
				}
				System.out.println(s);
				dwrite.writeUTF(d[0]+d[1]+d[2]+"");
				
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
	}

}

效果图片