Java网络编程：TCP客户端与服务器端通信案例

原创爱被打了一巴掌 2024-11-14 14:12 36阅读 0赞

Java的网络编程主要是基于Socket和NIO两种方式。这里我们将以TCP客户端与服务器端通信为例，展示如何使用Java进行网络编程。

1. 客户端创建：
```java
import java.io.*;
import java.net.*;

public class TCPClient {
    public static void main(String[] args) {
        try (Socket socket = new Socket("localhost", 1234)) {
            System.out.println("Connected to Server");

// 发送数据
            DataOutputStream dos = new DataOutputStream(socket.getOutputStream()));
            dos.writeUTF("Hello, Server!");

// 接收数据
            BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()))));
            String response = br.readLine();
            System.out.println("Received from Server: " + response);

} catch (IOException e) {
            e.printStackTrace();
            System.out.println("Failed to connect to Server.");
        }
    }
}
```
2. 服务器端创建：
```java
import java.io.*;
import java.net.*;

public class TCPServer {
    public static void main(String[] args) throws IOException {
        // 创建ServerSocket
        ServerSocket serverSocket = new ServerSocket(1234);

System.out.println("TCP Server is listening on port 1234...");

// 开始监听客户端连接
        while (true) {
            Socket socket = serverSocket.accept();
            System.out.println("New connection from " + socket.getRemoteSocketAddress()));

// 创建DataInputStream和DataOutputStream进行数据交互
            DataInputStream in = new DataInputStream(socket.getInputStream()));
            DataOutputStream out = new DataOutputStream(socket.getOutputStream()));

// 接收客户端发来的数据
            String messageFromClient = in.readUTF();
            System.out.println("Received from Client: " + messageFromClient);

// 发送服务器端回复的数据
            out.writeUTF("Server received your message: " + messageFromClient));
            out.flush();

// 关闭socket连接
            socket.close();
        }
    }
}
```
以上就是使用Java进行TCP客户端与服务器端通信的案例。