package cn.stat.p4.ipdemo;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

public class serverDemo {

    /**

     * @param args

     * @throws IOException

     */

    public static void main(String[] args) throws IOException {

        //创建服务器对像

        ServerSocket ss=new ServerSocket(1000);

        //获取连接过来的客户端对像

        Socket s=ss.accept();

        //通过socket对象获取输入流，要读取客户端发过来的数据\

        BufferedReader bufin=new BufferedReader(new InputStreamReader(s.getInputStream()));

        //4,获取socket的输出流，并装饰。

                PrintWriter out = new PrintWriter(s.getOutputStream(),true);

        String line=null;

        while((line=bufin.readLine())!=null)

        {

            System.out.println(line);

            //发送

            out.println(line.toUpperCase());

        }    

        s.close();

        ss.close();        

    }

}

package cn.stat.p4.ipdemo;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.Socket;

import java.net.UnknownHostException;

public class clentDemo {

    /**

     * @param args

     * @throws IOException

     * @throws UnknownHostException

     */

    public static void main(String[] args) throws UnknownHostException, IOException {

        //创建连接对像

        Socket socket=new Socket("192.168.1.103",1000);

        //获取键盘输入

        BufferedReader bufr=new BufferedReader(new InputStreamReader(System.in));

        //获取输出流对像

        PrintWriter pw=new PrintWriter(socket.getOutputStream(),true);

        //获取返回数据

        BufferedReader bufin=new BufferedReader(new InputStreamReader(socket.getInputStream()));

        String line=null;

        while((line=bufr.readLine())!=null)

        {

            if(line.equals("over"))

                break;

            System.out.println(line);

            pw.println(line);

            String uptext=bufin.readLine();

            System.out.println(uptext);

        }

        socket.close();

    }

}