Java Socket实战之一 单线程通信

时间:2021-11-15 03:58:07

首先是写一个Server类,这个类用来监听10000端口,并从这个端口接收消息然后输出,当收到“bye”时退出。

packagecom.googlecode.garbagecan.test.socket.sample1; 

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 MyServer { 

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

       ServerSocket server= new ServerSocket(10000);  //服务器在10000端口监听

       Socket client =server.accept();    //得到连接,程序进入堵塞状态

       BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));   //接收输入流

       PrintWriter out = new PrintWriter(socket.getOutputStream()); //返回输入流,打印输出

       while (true) { 

           String msg =in.readLine();   //接收客服端发送的内容

           System.out.println(msg); 

           out.println("Server received " + msg); 

           out.flush(); 

           if (msg.equals("bye")) { 

               break; 

           } 

       } 

       client.close(); 

   } 

然后是一个Client类,这个类连接上面启动的Server类,然后接收任何用户输入,当遇到回车时发送字符串到Server上,当输入“bye”是退出。

package com.googlecode.garbagecan.test.socket.sample1; 

 

import java.io.BufferedReader; 

import java.io.InputStreamReader; 

import java.io.PrintWriter; 

import java.net.Socket; 

 

public class MyClient { 

    public static voidmain(String[] args) throws Exception { 

        Socket client = newSocket("localhost", 10000); 

        BufferedReader in =new BufferedReader(new InputStreamReader(client.getInputStream()));   //接收服务器端信息

        PrintWriter out = newPrintWriter(socket.getOutputStream());  //发送数据

        BufferedReader reader= new BufferedReader(new InputStreamReader(System.in));   //接收键盘输入信息

 

        while (true) { 

            String msg =reader.readLine(); 

           out.println(msg); 

            out.flush(); 

            if(msg.equals("bye")) { 

                break; 

            } 

           System.out.println(in.readLine()); 

        } 

        client.close(); 

    } 

最后,首先运行MyServer类,然后MyClient类,然后在MyClient的控制台输入任意字符,可以看到当输入byeserverclient都会退出。