java中的基于套结字(socket)的通信 一. 一个双人单方向通信例子

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/*
 * date: 2004-11-29 author:zhangyu6050;
 * todo:一个双人单方向通信例子
 *      本文件是主机方(Server)
 *      提供主机与客户机的通信套节字:fromClient
 * bugs:
 */

import java.net.*;
import java.io.*;

public class ChatServer {

    public static void main(String[] args) {
       
        final int port = 1775;  //建立通信的主机的端口号  
        ServerSocket socServer = null;
        Socket fromClient=null;//主机与客户机的通信套节字:fromClient
        String message="hello,i'm server!";
        try
        {
            socServer = new ServerSocket(port);
        }
        catch (IOException e)
        {
            System.err.println("Could not listen on port: "+port);
            System.exit(1);
        }

 Socket clientSocket = null;
        try {
            fromClient = socServer.accept();
        } catch (IOException e) {
            System.err.println("Accept failed.");
            System.exit(1);
        }    
        try{
        ObjectOutputStream oos=new ObjectOutputStream(fromClient.getOutputStream());
    
        oos.writeObject(message);
        oos.close();
        fromClient.close();//关闭套节字前要关闭所有的流连接
       
        } catch (IOException e1) {           
            e1.printStackTrace();
        }
    }

}




/*
 * date:   2004-11-29
 * author:zhangyu6050;
 * todo:   一个双人单方向通信例子
 *        本文件是客户方(client)
 * bugs:
 */
import java.net.*;
import java.io.*;
public class ChatClient {
    public static void main(String[] args) {
        final int port=1775;
        Socket socket=null;
        try {
            socket=new Socket("127.0.0.1",port);
            ObjectInputStream ois=new ObjectInputStream(socket.getInputStream());
            String mess=(String)ois.readObject();
            System.out.print(mess);
           
           
           
        } catch (UnknownHostException e) {           
            e.printStackTrace();
        } catch (IOException e) {            
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
}

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