黑马JAVA P182 TCP通信快速入门

package com.itheima.d5_socket1;

import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;


public class ClientDemo1 {
    public static void main(String[] args) {
        try {
            //1.创建Socket通信管道请求有服务端的连接
            //public Socket(String host, int port)
            //参数一：服务端的IP地址
            //参数二：服务端的端口
            Socket socket = new Socket("127.0.0.1",7777);

            //2.从socket通信管道中得到一个字节输出流  负责发送数据
            OutputStream os = socket.getOutputStream();

            //3.把低级的字节流包装成打印流
            PrintStream ps = new PrintStream(os);

            //4.发送消息
            ps.print("我是TCP的客户端，我已经与你对接，并发出邀请：约吗？");
            ps.flush();

            //关闭资源。
//            socket.close();
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

package com.itheima.d5_socket1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;


public class ServeDemo2 {
    public static void main(String[] args) {
        try {
            System.out.println("======服务端启动成功=========");
            //1.注册端口
            ServerSocket serverSocket = new ServerSocket(7777);
            //2.必须调用accept方法：等待接收客户端的Socket连接请求，建立Socket通信管道
            Socket socket = serverSocket.accept();
            //3.从socket通信管道中得到一个字节输入流
            InputStream is = socket.getInputStream();
            //4.把字节输入流包装成缓冲字符输入流进行消息的接收
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            //5.按照行读取消息
            String msg;
            if((msg = br.readLine()) != null){
                System.out.println(socket.getRemoteSocketAddress() + "说了：：" + msg);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

package com.itheima.d5_socket1;

import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;


public class ClientDemo1 {
    public static void main(String[] args) {
        try {
            System.out.println("====客户端启动====");
            //1.创建Socket通信管道请求有服务端的连接
            //public Socket(String host, int port)
            //参数一：服务端的IP地址
            //参数二：服务端的端口
            Socket socket = new Socket("127.0.0.1",7777);

            //2.从socket通信管道中得到一个字节输出流  负责发送数据
            OutputStream os = socket.getOutputStream();

            //3.把低级的字节流包装成打印流
            PrintStream ps = new PrintStream(os);

            //4.发送消息
            ps.println("我是TCP的客户端，我已经与你对接，并发出邀请：约吗？");
            ps.flush();

            //关闭资源。
//            socket.close();

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