appcharserver.java

java关于.net编程的一些简单实例

import java.net.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
public class AppCharServer extends Frame{
	private ServerSocket server;
	private Socket newSocket;
	private BufferedReader reader;
	private TextField sendBox=new TextField();
	private TextArea msgView=new TextArea();
	private PrintWriter writer;
	public AppCharServer(){
		super("Server窗口");
		msgView.setEditable(false);
		add(msgView,"Center");
		add(sendBox,"North");
		pack();
		setVisible(true);
		sendBox.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				writer.println("Server:"+sendBox.getText());
				sendBox.setText("");
			}
		});
	}
	void startServer(){
		try{
			server=new ServerSocket(7777);
			while(true){
				msgView.append("等待客户端..."+"\n");
				newSocket=server.accept();
				reader=new BufferedReader(new InputStreamReader(newSocket.getInputStream()));
				writer=new PrintWriter(newSocket.getOutputStream(),true);
				getMessage();
			}
		}catch(Exception e){}
	}
	void getMessage(){
		try{
			while(true){
				msgView.append(reader.readLine()+"\n");
			}
		}catch(Exception e){}
		finally{
			try{
				if(reader!=null)reader.close();
				if(writer!=null)writer.close();
				if(newSocket!=null)newSocket.close();
			}catch(Exception e){}
		}
	}
	public static void main(String[] args){
		AppCharServer serverObj=new AppCharServer();
		serverObj.startServer();
	}

}