网络编程Scoket通信之简单模拟QQ对话！（控制台）

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服务器：

package com.softeem.scokt;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;

public class ServerDemo
{
    public static void serverTest() {
        System.out.println("等待客户端链接。。。");
        ServerSocket ss = null;
        PrintWriter pw = null;
        Scanner sc = null;
        Scanner insc = null;
        try {
            //打开服务 指定端口号
            ss = new ServerSocket(8987);
            //从请求队列中取出一个连接
            Socket st = ss.accept();
            System.out.println(st.getInetAddress() + "成功连接上此服务器上。");
            //打印流写 socke获取输出流
            pw = new PrintWriter(st.getOutputStream());
            //使用打印流将字符串打印到控制台，不可使用system输出
            pw.println("成功连接到远程服务器！" + "\t" + "可以开始聊天了请先发言");
            pw.flush();
            sc = new Scanner(System.in);
            insc = new Scanner(st.getInputStream());
            //阻塞等待客户端发送消息过来
            while (insc.hasNext()) {
                String indata = insc.nextLine();
                System.out.println("ME客户端：" + indata);
                System.out.print("服务端：");
                String sdata = sc.nextLine();
                System.out.println("服务端：" + sdata);
                pw.println(sdata);
                pw.flush();
            }
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        finally {
            //关闭资源
            pw.close();
            sc.close();
            insc.close();
            try {
                ss.close();
            }
            catch (IOException e) {
                // TODO Auto-generated catch block  
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        serverTest();
    }

}

客户端：

package com.softeem.scokt;


import java.io.IOException;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.util.Scanner;


public class ClientDemo
{


    public static void ClientTest() {
        System.out.println("正在向服务器请求连接。。。");
        Socket st = null;
        Scanner sc = null;
        Scanner insc = null;
        PrintWriter pw = null;


        try {
            //socket获取端口号
            st = new Socket(InetAddress.getLocalHost(), 8987);
            insc = new Scanner(st.getInputStream());
            System.out.println(insc.nextLine());
            pw = new PrintWriter(st.getOutputStream());
            System.out.print("ME客户端：");


            sc = new Scanner(System.in);
            //阻塞等待服务端发送消息过来
            while (sc.hasNext()) {
                String sdata = sc.nextLine();
                System.out.println("ME客户端:" + sdata);
                pw.println(sdata);
                pw.flush();
                String indata = insc.nextLine();
                System.out.println("服务端：" + indata);
                System.out.print("ME客户端：");
            }
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        finally {
            //关闭资源
            pw.close();
            sc.close();
            insc.close();
            try {
                st.close();
            }
            catch (IOException e) {
                // TODO Auto-generated catch block  
                e.printStackTrace();
            }
        }
    }


    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ClientTest();
    }


}