java下tcp的socket连接案例

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();

    }

}