java实现socket连接

下面是Java实现socket连接的示例代码：

客户端：

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

public class Client {
    public static void main(String[] args) {
        try {
            // 创建Socket对象，指定服务器地址和端口号
            Socket socket = new Socket("localhost", 8888);

            // 获取输出流，向服务器发送数据
            PrintWriter pw = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
            pw.println("Hello, server!");
            pw.flush();

            // 获取输入流，读取服务器返回的数据
            BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            String response = br.readLine();
            System.out.println("Server response: " + response);

            // 关闭连接
            br.close();
            pw.close();
            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

服务器端：

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

public class Server {
    public static void main(String[] args) {
        try {
            // 创建ServerSocket对象，指定端口号
            ServerSocket serverSocket = new ServerSocket(8888);
            System.out.println("Server started.");

            while (true) {
                // 监听客户端连接请求，返回Socket对象
                Socket socket = serverSocket.accept();
                System.out.println("Client connected.");

                // 获取输入流，读取客户端发送的数据
                BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                String request = br.readLine();
                System.out.println("Client request: " + request);

                // 获取输出流，向客户端发送数据
                PrintWriter pw = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
                pw.println("Hello, client!");
                pw.flush();

                // 关闭连接
                br.close();
                pw.close();
                socket.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}