基于TCP协议的服务器（单线程）

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.Scanner;

import java.util.Timer;

import java.util.TimerTask;

 

public class JabberServer

{

 

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

    {

        // TODO 自动生成的方法存根

        new FuWuQi();

    }

 

}

 

class FuWuQi

{

    public static final int port = 8080;

 

    BufferedReader in = null;

    PrintWriter out = null;

 

    class JieShou extends TimerTask

    {

        public void run()

        {

            String string=null;

            try

            {

                string=in.readLine();

                if(string!=null)

                {

                    System.out.println(string);

                }

 

            } catch (Exception e)

            {

                // TODO: handle exception

            }

 

        }

    }

 

 

    public FuWuQi() throws IOException

    {

        ServerSocket s = new ServerSocket(port);// 创建一个服务器对象 它扫描的端口是 port

        System.out.println("开始");

        try

        {

            Socket socket = s.accept();// 此时程序会进入阻塞状态 即等待一个客户端连接 但 其他程序会正常

            try

            {

                System.out.println("有一个客户机连接" + socket);

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

                out = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()), true);// true 参数可以 自动刷新流 若没有刷新 信息就不会进入网络除非缓冲区溢出

                // PrintWriter out=new PrintWriter(socket.getOutputStream(),true);

 

                Timer timer=new Timer();

                JieShou jieShou=new JieShou();

 

 

                timer.schedule(jieShou, 10,200);

                while(true)

                {

                    Scanner in1=new Scanner(System.in);

                    out.println(in1.next());

                }

            //    timer.cancel();

 

 

            } catch (Exception e)

            {

 

            } finally

            {

                System.out.println("客户端 关闭");

                socket.close();// 套接字使用了非常重要的内存资源 所以一定要在用完之后关闭他们

            }

 

        } catch (Exception e)

        {

            // TODO: handle exception

        } finally

        {

            System.out.println("服务端关闭");

            s.close();

            System.exit(0);

        }

 

    }

}