package com.itheima.d5_socket1;import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;/*** 目标：完成Socket网络编程入门案例的客户端开发，实现1发1收。*/
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();}}
}

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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;/*** 目标：开发Socket网络编程入门代码的服务端，实现接收消息*/
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;/*** 目标：完成Socket网络编程入门案例的客户端开发，实现1发1收。*/
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();}}
}