client2.java

客户机服务器通信程序 实现客户机和服务器之间的通信,实现同步操作

import java.awt.*;
import java.io.*;
import java.net.*;
import java.awt.event.*;

public class Client2 extends Frame{
	private TextArea msgview=new TextArea();
	private TextField sendbox=new TextField();
	private PrintWriter writer;
	Socket socket;
	
	public Client2(String title){
		super(title);
		msgview.setEditable(false);
		add(msgview,"North");
		add(sendbox,"South");
		
		sendbox.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent ae){
				writer.println(sendbox.getText());
				msgview.append(sendbox.getText()+"\n");
				sendbox.setText("");
				}
			});
			pack();
			}
		
	private void connect(){
		try{
			msgview.append("尝试与服务器连接\n");
			socket=new Socket("127.0.0.1",7777);
			msgview.append("完成连接，清除字符串\n");
			writer=new PrintWriter(socket.getOutputStream(),true);
			}catch(Exception e){
				msgview.append("连接失败");
			}
		}
		
	public static void main(String args[]){
		Client2 client=new Client2("向服务器发送数据");
		client.setVisible(true);
		client.connect();
		}
	}