package SocketDemo;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class loginClient {
    public static void main(String[] args){
    try {//建立客户端socket连接 ，指定服务器位置，急端口
        Socket socket=new Socket("localhost",8888);
        //得到socket的读写流
        OutputStream os=socket.getOutputStream();
        PrintWriter pw=new PrintWriter(os);
        //输入流
        InputStream is=socket.getInputStream();
        BufferedReader br=new BufferedReader(new InputStreamReader(is));
        String info="用户名：tom;用户密码:123456";
        pw.write(info);
        pw.flush();
        socket.shutdownOutput();//关闭输出流
        
        //接受服务器响应
        String reply=null;
        while(!((reply=br.readLine())==null)){    
            System.out.println("我是客户端！！服务器端的响应是"+reply);
        }
        br.close();
        is.close();
        pw.close();
        os.close();
        socket.close();
    } catch (UnknownHostException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    }
}

package SocketDemo;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class LoginServer {
  public static void main(String [] args){
      try {
          //建立服务器Socket对象，绑定端口开始监听,建议使用大于1024端口
        ServerSocket ss=new ServerSocket(8888);
        //使用accpet方法阻塞等待监听，获得连接
        
        Socket socket=ss.accept();
        //获得输入流
        InputStream is=socket.getInputStream();
        BufferedReader br=new BufferedReader(new InputStreamReader(is));
        //获得输出流
        OutputStream os=socket.getOutputStream();
        PrintWriter pw=new PrintWriter(os);
        
        
        // 读取输入信息
        String info=null;
        while(!((info=br.readLine())==null)){    
            System.out.println("我是服务器！！用户信息为"+info);
        }
        String reply="welcome";
        pw.write(reply);
        pw.flush();
        pw.close();
        os.close();
    br.close();
    is.close();
    socket.close();
    ss.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
  }
}