Java网络编程客户端与服务器端交互示例-蒲公英云

Java网络编程客户端与服务器端交互示例

在Java中，进行网络编程客户端与服务器端的交互通常涉及到Socket通信。以下是一个简单的示例：

客户端（ServerThread.java）：
```java
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerThread extends Thread {
private ServerSocket serverSocket;

public ServerThread(int port) {
    this.serverSocket = new ServerSocket(port);
}
@Override
public void run() {
    try {
        Socket clientSocket = serverSocket.accept();
        BufferedReader inFromClient = 
                new BufferedReader(new InputStreamReader(clientSocket.getInputStream()))));
        PrintWriter outToClient = 
                new PrintWriter(new OutputStreamWriter(clientSocket.getOutputStream()))));
        String messageFromClient;
        while ((messageFromClient = inFromClient.readLine()) != null)) {
            System.out.println("Received from client: " + messageFromClient);
            // 简单处理，这里可以发送回复或执行其他操作
            outToClient.println("Message received, sending response...");
        }
    } catch (IOException e) {
        System.err.println(e.getMessage());
        try {
            serverSocket.close();
        } catch (IOException ex) {
            System.out.println(ex.getMessage());
        }
    }
}

}


2. 服务器（Server.java）：
```java
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
public class Server {
    private static final int PORT = 1234;
    public static void main(String[] args) throws IOException {
        new ServerThread(PORT).start();
        // 这里可以添加其他等待客户端连接的操作
        System.out.println("Server is waiting for client connections...");
    }
}