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JAVA—socket编程

ai 2025/7/7 0:35:51

一、什么是socket编程

socket编程，是在不同的进程间进行网络通讯的一种编程技术，在socket编程中基于TCP、UDP等协议做的一层封装，是一套系统所提供的的用于进行网络通信的编程接口。

二、 java实现socket代码

客户端java代码：

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;public class TcpSocketClient {/*** 客户端程序*/public void client() throws IOException {Scanner scanner = new Scanner(System.in);System.out.println("等待连接服务端！");Socket socket = new Socket("127.0.0.1", 2111);System.out.println("连接服务端成功！");while (true) {// 给服务端发信息System.out.print("请输入：");String s = scanner.next();if ("out".equals(s)) {break;}OutputStream outputStream = socket.getOutputStream();outputStream.write(s.getBytes(StandardCharsets.UTF_8));byte[] bytes = new byte[1024];// 读一下服务端发来的信息InputStream inputStream = socket.getInputStream();int read = inputStream.read(bytes);System.out.println("服务端：" + new String(bytes, 0, read, Charset.defaultCharset()));}}public static void main(String[] args) throws IOException {TcpSocketClient tcpSocketServer = new TcpSocketClient();tcpSocketServer.client();}
}

服务端java代码：

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;public class TcpSocketServer {/*** 服务端程序*/public void server() throws IOException {Scanner scanner = new Scanner(System.in);// 服务端监听 1111 端口ServerSocket serverSocket = new ServerSocket(1111);System.out.println("等待连接");Socket client = serverSocket.accept();System.out.println("连接成功！");while (true) {// 获取客户端输入流InputStream inputStream = client.getInputStream();byte[] bytes = new byte[1024];int read = inputStream.read(bytes);// 客户端发来的消息System.out.println("客户端：" + new String(bytes, 0, read, Charset.defaultCharset()));// 给客户端发端消息System.out.print("请输入：");String nextLine = scanner.next();if ("out".equals(nextLine)) {break;}client.getOutputStream().write(nextLine.getBytes(StandardCharsets.UTF_8));}}public static void main(String[] args) throws IOException {TcpSocketServer tcpSocketServer = new TcpSocketServer();tcpSocketServer.server();;}
}