一个简单的TCP/IP服务端客户端对话

//TCP/IP服务器



import java.io.ObjectOutputStream;

import java.net.InetAddress;

import java.net.ServerSocket;

import java.net.Socket;



public class TestSocketServer {



    ServerSocket serverSocket;

    int portNumber=9001;

    Socket socket;

    String str;

    

    public TestSocketServer(){

        str="Hello,I am Server!";

        

        try {

            //使用端口号创建一个serverSocket对象

            serverSocket=new ServerSocket(portNumber);

            //等待一个客户连接端口xx的服务器

            socket=serverSocket.accept();

            //创建流发送数据

            ObjectOutputStream oos =new ObjectOutputStream(socket.getOutputStream());

            

            oos.writeObject(str);

            //关闭流和套接字

            oos.close();

            socket.close();

        } catch (Exception e) {



            e.printStackTrace();

        }

        

    }

    

    public static  void main(String[]args){

        TestSocketServer tss=new TestSocketServer();

    }

}

//TCP/IP客户



import java.io.ObjectInputStream;

import java.net.InetAddress;

import java.net.Socket;



public class TestSocketClient {



    Socket socket ;

    int portNumber=9001;

    String string="";

    

    public TestSocketClient(){

        try {

            //创建Socket类对象,向它传递服务器的IP地址和服务器监听端口

            socket =new Socket(InetAddress.getLocalHost(),portNumber);

            //创建输入流,访问数据

            ObjectInputStream ois=new ObjectInputStream(socket.getInputStream());

            //读取对象

            string=(String)ois.readObject();

            System.out.println(string);

            

        } catch (Exception e) {

            e.printStackTrace();

        }

        

    }

    public static void main(String[]args){

        

        TestSocketClient tcp=new TestSocketClient();

    }

}