一对一的基于TCP协议的Socket通信

服务端：

 

package com.kkoolerter;

import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;

public class TCPOne2OneServer {

    /**
     * 一对一的基于TCP的服务器
     *
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {
        ServerSocket server = null;
        Socket socket = null;
        DataInputStream dis = null;
        PrintStream out = null;
        try {
            // 设置侦听端口
            server = new ServerSocket(12345);
            // 获取Socket
            socket = server.accept();
            // 获取输入流
            dis = new DataInputStream(socket.getInputStream());
            // 获取输出流
            out = new PrintStream(socket.getOutputStream());
            // 获取客户端的IP地址
            InetAddress addr = server.getInetAddress();
            //发送欢迎信息
            out.println("Welcome...");
            byte buffer [] = new byte[1024];
            //判断用户是否已经退出
            int len = dis.read(buffer);
            String msg = new String(buffer,len);
            while(!msg.equals("quit")){
                System.out.println("from client:"+new String(msg));
                msg = dis.readLine();
            }
            System.out.println("client leaved");
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            dis.close();
            out.close();
            socket.close();
            server.close();
            System.exit(0);
        }
    }

}

 

客户端：

package com.kkoolerter;

import java.io.DataInputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;
import java.text.Format;

import javax.sound.sampled.AudioFormat.Encoding;

public class TCPOne2OneClient {

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        Socket socket = null;
        PrintStream ps = null;
        DataInputStream dis = null;

        try {
            socket = new Socket("127.0.0.1", 12345);
            ps = new PrintStream(socket.getOutputStream());
            dis = new DataInputStream(socket.getInputStream());
            String msg = dis.readLine();
            System.out.println("from server:" + msg);
            byte buffer[] = new byte[1024];
            System.in.read(buffer);
            msg = new String(buffer, 0);
            System.out.println(msg);
            while (!msg.equals("quit")) {
                ps.println(msg);
                System.in.read(buffer);
                msg = new String(buffer, "utf-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            ps.close();
            dis.close();
            socket.close();

        }
    }

}