before java網(wǎng)絡(luò)通信如何實(shí)現(xiàn)

小樊
83
2024-09-20 18:48:42
欄目: 編程語言

在Java中實(shí)現(xiàn)網(wǎng)絡(luò)通信，通常需要使用到Java套接字編程（Socket Programming）。套接字是一種用于實(shí)現(xiàn)不同計(jì)算機(jī)間或同一計(jì)算機(jī)內(nèi)的進(jìn)程間通信的技術(shù)。以下是一個(gè)簡(jiǎn)單的Java網(wǎng)絡(luò)通信示例，展示了如何使用TCP協(xié)議進(jìn)行客戶端和服務(wù)器之間的通信：

  1. 服務(wù)器端代碼（Server.java）：
import java.io.*;
import java.net.*;

public class Server {
    public static void main(String[] args) throws IOException {
        int port = 12345;
        ServerSocket serverSocket = new ServerSocket(port);
        System.out.println("Server is listening on port " + port);

        Socket socket = serverSocket.accept();
        System.out.println("Client connected");

        InputStream inputStream = socket.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

        OutputStream outputStream = socket.getOutputStream();
        PrintWriter writer = new PrintWriter(outputStream, true);

        String line;
        while ((line = reader.readLine()) != null) {
            System.out.println("Received: " + line);
            writer.println("Server received: " + line);
        }

        socket.close();
        serverSocket.close();
    }
}
  1. 客戶端代碼（Client.java）：
import java.io.*;
import java.net.*;

public class Client {
    public static void main(String[] args) throws IOException {
        String serverAddress = "localhost";
        int port = 12345;

        Socket socket = new Socket(serverAddress, port);
        System.out.println("Connected to server");

        OutputStream outputStream = socket.getOutputStream();
        PrintWriter writer = new PrintWriter(outputStream, true);

        InputStream inputStream = socket.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

        BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
        String line;

        while (true) {
            System.out.print("Enter a message: ");
            line = console.readLine();
            if (line == null || line.equalsIgnoreCase("exit")) {
                break;
            }

            writer.println(line);
            System.out.println("Sent: " + line);

            String response = reader.readLine();
            System.out.println("Server response: " + response);
        }

        socket.close();
    }
}

首先運(yùn)行服務(wù)器端代碼（Server.java），然后運(yùn)行客戶端代碼（Client.java）?？蛻舳藢⑦B接到服務(wù)器并發(fā)送消息，服務(wù)器將接收消息并將其原樣返回。當(dāng)客戶端輸入"exit"時(shí)，連接將關(guān)閉。

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