【好程序员特训营】Java网络连接测试小例子

来源：互联网发布：软件设计师教程 csdn 编辑：程序博客网时间：2024/05/18 04:00

花了两个小时时间去看书写例子，遇到不少蛋疼的问题，把例子贴出来，以免忘记

服务器端：

import java.io.*;import java.net.*;public class mYServer {         public static void main(String[] args) {                   ServerSocket serverSocket = null;                   Socket socket = null;                   OutputStream os = null;                   InputStream is = null;                   //监听端口号                   int port = 8898;                   try {                            //建立连接                            serverSocket = new ServerSocket(port);                            //获得连接                            socket = serverSocket.accept();                            //接收客户端发送内容                            is = socket.getInputStream();                            byte[] b = new byte[1024];                            int n = is.read(b);                            //输出                            System.out.println("客户端发送内容为：" + new String(b,0,n));                            //向客户端发送反馈内容                            os = socket.getOutputStream();                            os.write(b, 0, n);                   } catch (Exception e) {                            e.printStackTrace();                   }finally{                            try{                                     //关闭流和连接                                     os.close();                                     is.close();                                     socket.close();                                     serverSocket.close();                            }catch(Exception e){}                   }         }}

客户端：

import java.io.*;import java.net.*;public class mYClient {         public static void main(String[] args) {                   Socket socket = null;                   InputStream is = null;                   OutputStream os = null;                   //服务器端IP地址                   String serverIP = "127.0.0.1";                   //服务器端端口号                   int port = 8898;                   //发送内容                   String data = "成功了";                   try {                            //建立连接                            socket = new Socket(serverIP,port);                            //发送数据                            os = socket.getOutputStream();                            os.write(data.getBytes());                            //接收数据                            is = socket.getInputStream();                            byte[] b = new byte[1024];                            int n = is.read(b);                            //输出反馈数据                            System.out.println("服务器反馈：" + new String(b,0,n));                   } catch (Exception e) {                            e.printStackTrace(); //打印异常信息                   }finally{                            try {                                     //关闭流和连接                                     is.close();                                     os.close();                                     socket.close();                            } catch (Exception e2) {}                   }         }}

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