一、一个简单的socket通信实例（TCP）

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u014155085/article/details/83818036

 

1.服务端代码

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

/**
 * 类功能描述：先启动服务器端，再启动客户端
 *
 * @author：***
 * @createTime：2018/11/5 16:02
 */
public class Server {

    public static void main(String[] args) {
        try {
            //1.创建服务器socket  指定监听端口
            ServerSocket serverSocket = new ServerSocket(18080);
            //2.调用accept()开始监听，等待客户的连接
            System.out.println("---------服务器即将启动，等待客户端连接---------");
            Socket socket = serverSocket.accept();
            //3.读取客户端发送信息
            BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            System.out.println("接收到客户端发送的消息为：" + br.readLine());
            socket.shutdownInput();
            //4.推送客户端请求
            PrintWriter pw = new PrintWriter(socket.getOutputStream());
            pw.write("response");
            pw.flush();
            socket.shutdownOutput();
            //5.关闭连接
            br.close();
            pw.close();
            socket.close();
            serverSocket.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

 2.客户端代码

import java.io.*;
import java.net.Socket;

/**
 * 类功能描述：客户端
 *
 * @author：***
 * @createTime：2018/11/5 16:03
 */
public class Client {

    public static void main(String[] args) {
        try {
            //1.创建客户端socket，指定服务器地址和端口
            Socket socket = new Socket("127.0.0.1", 18080);
            //2.向服务器发送信息
            PrintWriter pw = new PrintWriter(socket.getOutputStream());
            pw.write("request");
            pw.flush();
            socket.shutdownOutput();
            //3.读取服务器推送信息
            BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            System.out.println("接收到服务器推送的消息为：" + br.readLine());
            socket.shutdownInput();
            //4.关闭连接
            br.close();
            pw.close();
            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}