信息发送

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

public class May {
  public static void main(String[] args) {
//    单线程程序
    try {
      ServerSocket socket = new ServerSocket(2233);//端口号
      Socket soc = socket.accept();
//      读取信息
      BufferedReader br = new BufferedReader(new InputStreamReader(soc.getInputStream()));
      PrintWriter out = new PrintWriter(soc.getOutputStream());
      while (true) {
//      发送
        System.out.println("发送：");
        String msg = new Scanner(System.in).nextLine();
//        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        out.println(String.format("[%s]:%s\r\n", "服务器", msg));
        out.flush();
//      接收
        System.out.println(br.readLine());
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

接收信息并回复

import java.io.*;
import java.net.Socket;
import java.util.Scanner;
public class Max {
  public static void main(String[] args) {
    try {
      Socket s = new Socket("localhost",2233);//链接端口号
      String sc = s.getInetAddress().getHostAddress();//获取IP
//      读取信息
      BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
      PrintWriter out = new PrintWriter(s.getOutputStream());
      while (true) {
//      接收
        System.out.println(br.readLine());
//      发送
        System.out.println("发送：");
        String msg = new Scanner(System.in).nextLine();
//        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        out.println(String.format("[%s]:%s\r\n", sc, msg));
        out.flush();
      }

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

  }
}

发送你好

接收你好并回复