TCP单向通信服务端与客户端的创建_tcp 单向开通能否telnent-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_62225125/article/details/121132689

本文详细介绍了如何在Java中创建TCP单向通信的服务端和客户端。首先，展示了服务端的初始化过程，包括服务器套接字的创建、监听端口的设置以及接收客户端连接的方法。接着，探讨了客户端的建立，涵盖了套接字连接、发送请求到服务端的步骤。通过这两个关键部分的实现，读者将能够理解TCP单向通信的基本原理。

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服务端的创建

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

public class OneWaySocketSever {


    public static void main(String[] args) {
        Socket socket = null;
        BufferedReader br = null;
        PrintWriter pw = null;

        try {
            ServerSocket serverSocket = new ServerSocket(8888);
            System.out.println("服务器启动，开始监听。。。");
            socket = serverSocket.accept();
            System.out.println("连接成功！");

            br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            pw = new PrintWriter(socket.getOutputStream());
            while (true) {
                String str = br.readLine();
                System.out.println("客户端说：" + str);
                if ("exit".equals(str)) {
                    break;
                }
                pw.println(str);
                pw.flush();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (br != null) {

                    try {
                        br.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                    if (pw != null) {
                        pw.close();
                    }
                    if (socket != null) {
                        try {
                            socket.close();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }
        }
    }

客户端的创建

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

public class OneWaySocketClient {
    public static void main(String[] args) {
        Socket socket = null;
        Scanner scanner=null;
        PrintWriter     pw=null;
        BufferedReader br = null;

        try{
            socket =new Socket("127.0.0.1",8888);
            scanner = new Scanner(System.in);
            pw= new PrintWriter(socket.getOutputStream());
            br=new BufferedReader(new InputStreamReader(socket.getInputStream()));
            while(true){
                String  str =scanner.nextLine();
                pw.println(str);
                pw.flush();
                if("exit".equals(str)){
                    break;
                }
                String serverInput =br.readLine();
                System.out.println("服务端返回的："+serverInput);

            }

        }catch(Exception e){
            e.printStackTrace();
        }finally{
            if(scanner !=null){
                scanner.close();
            }
            if (pw!=null){
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        if(pw !=null){
            pw.close();
        }
        if(socket!=null){
            try {
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
}