Java网络编程一 TCP通信-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_8851/article/details/81936864

本文提供了一个简单的TCP通信实例，包括服务端与客户端的Java代码实现。服务端监听1000端口接收客户端发来的消息，客户端则向该端口发送整数100和字符串“你好”。此示例展示了基本的TCP套接字编程流程。

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1. 服务端

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

public class TcpServer {

    public void start(){
        try {
            ServerSocket serverSocket = new ServerSocket(1000);
            while(true){
                Socket client = serverSocket.accept();
                System.out.println("client -- > ip : " + client.getInetAddress().getHostAddress() + ", port : " + client.getPort());
                DataInputStream dis = new DataInputStream(client.getInputStream());
                System.out.println(dis.readInt());
                BufferedReader d = new BufferedReader(new InputStreamReader(client.getInputStream()));
                System.out.println(new String(d.readLine()));
                client.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static void main(String[] args) {
        new TcpServer().start();

    }

}

2. 客户端

import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class TcpClient {

    public static void main(String[] args) {
        try {
            Socket socket = new Socket("127.0.0.1", 1000);
            DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
            dos.writeInt(100);
            dos.write("你好".getBytes());
            socket.close();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

}