client.java

东西比较杂

/**
 * 
 */
package com.tiankong;

/**
 * @author Administrator
 *
 */
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Client extends JFrame{
	private JTextField enter;
	private JTextArea display;
	ObjectOutputStream output;
	ObjectInputStream input;
	String message="";
	public Client(){
		super("Client");
		Container c=this.getContentPane();
		enter=new JTextField();
		enter.setEnabled(false);
		enter.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				sendData(e.getActionCommand());
			}
		});
		c.add(enter,BorderLayout.NORTH);
		display=new JTextArea();
		c.add(new JScrollPane(display),BorderLayout.CENTER);
		setSize(300,150);
		setVisible(true);
	}
	public void runClient(){
		Socket client;
		try{
			display.setText("Attempting connection\n");
			client=new Socket(InetAddress.getByName("127.0.0.1"),5000);
			display.append("Connection to: "+client.getInetAddress().getHostName());
			output=new ObjectOutputStream(client.getOutputStream());
			output.flush();
			input=new ObjectInputStream(client.getInputStream());
			display.append("\nGot I/O stream\n");
			enter.setEnabled(true);
			do{
				try{
					message=(String)input.readObject();
					display.append("\n"+message);
					display.setCaretPosition(display.getText().length());
				}catch(ClassNotFoundException cnfex){
					display.append("\nUnknow object type received");
				}
			}while(!message.equals("SERVER>>>TERMINATE"));
			display.append("Closing connection.\n");
			input.close();
			output.close();
			client.close();
		}catch(EOFException eof){
			System.out.println("Server terminated connection");
		}catch(IOException e){
			e.printStackTrace();
		}
	}
	private void sendData(String s){
		try{
			message=s;
			output.writeObject("CLIENT>>> "+s);
			output.flush();
			display.append("\nCLIENT>>>"+s);
		}catch(IOException cnfex){
			display.append("\nError writing object");
		}
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Client app=new Client();
		app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		app.runClient();
	}

}