Java 网络编程基础

来源：互联网发布：个人陈述知乎编辑：程序博客网时间：2024/05/05 18:38

/*这是一个客户端程序*/package com.client;import java.io.*;import java.net.*;public class client {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubclient t=new client();}public client(){try {Socket s=new Socket("127.0.0.1",9991);//如果s连接成功，就可以发送数据给服务器//我们通过pw，向s发送数据,true表示及时刷新PrintWriter pw=new PrintWriter(s.getOutputStream(),true);pw.println("你好吗，我是客户端");InputStreamReader isr=new InputStreamReader(s.getInputStream());            BufferedReader br=new BufferedReader(isr);            String info=br.readLine();            System.out.println(info);}catch (Exception e) {// TODO: handle exceptione.printStackTrace();}}}

/* * 这是我的第一个服务器端程序，让他在9999端口监听 */package com.sever;import java.io.*;import java.net.*;import javax.print.attribute.standard.Severity;public class test1 {public static void main(String[]args){test1 x=new test1();}public test1(){ServerSocket ss;try {//在9999号端口监听ss = new ServerSocket(9991);//等待某个客户端来连接，该函数会返回一一个socket连接Socket s=ss.accept();InputStreamReader isr=new InputStreamReader(s.getInputStream());            BufferedReader br=new BufferedReader(isr);            String info=br.readLine();            System.out.println(info);            PrintWriter pw=new PrintWriter(s.getOutputStream(),true);            pw.println("我是服务器，你也好");            } catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

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