用java编写程序,实现基于TCP/IP协议的Socket通信过程。服务器端开放: IP地址:127.0.0.1 端口号:8889 客户端发送数据: Hello Server!

好的，以下是Java代码实现：

服务器端：

import java.io.*;
import java.net.*;

public class Server {
    public static void main(String[] args) throws IOException {
        ServerSocket serverSocket = null;
        try {
            serverSocket = new ServerSocket(8889, 10, InetAddress.getByName("127.0.0.1"));
            System.out.println("服务器已启动，等待客户端连接...");
        } catch (IOException e) {
            System.out.println("服务器启动异常：" + e.getMessage());
            System.exit(1);
        }

        Socket clientSocket = null;
        try {
            clientSocket = serverSocket.accept();
            System.out.println("客户端连接成功，地址为：" + clientSocket.getInetAddress().getHostAddress());
        } catch (IOException e) {
            System.out.println("客户端连接异常：" + e.getMessage());
            System.exit(1);
        }

        PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
        BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));

        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            System.out.println("客户端发送数据：" + inputLine);
            out.println("服务端已收到数据：" + inputLine);
            if (inputLine.equals("Bye.")) {
                break;
            }
        }

        out.close();
        in.close();
        clientSocket.close();
        serverSocket.close();
    }
}

客户端：

import java.io.*;
import java.net.*;

public class Client {
    public static void main(String[] args) throws IOException {
        Socket socket = null;
        PrintWriter out = null;
        BufferedReader in = null;

        try {
            socket = new Socket("127.0.0.1", 8889);
            out = new PrintWriter(socket.getOutputStream(), true);
            in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        } catch (UnknownHostException e) {
            System.out.println("未知的主机地址：" + e.getMessage());
            System.exit(1);
        } catch (IOException e) {
            System.out.println("无法连接到服务器：" + e.getMessage());
            System.exit(1);
        }

        BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));

        String userInput;
        while ((userInput = stdIn.readLine()) != null) {
            out.println(userInput);
            System.out.println("发送数据：" + userInput);
            System.out.println("服务端返回数据：" + in.readLine());
            if (userInput.equals("Bye.")) {
                break;
            }
        }

        out.close();
        in.close();
        stdIn.close();
        socket.close();
    }
}

当客户端运行后，输入"Hello Server!"，即可与服务器进行通信。