Java网络编程：TCP连接建立与关闭示例

原创分手后的思念是犯贱 2024-09-26 00:18 78阅读 0赞

在Java中，我们可以使用java.net包中的Socket和ServerSocket类来实现TCP连接的建立与关闭。以下是一个简单的示例：

1. **客户端建立连接：**

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

public class Client {
    public static void main(String[] args) {
        try (Socket socket = new Socket("localhost", 1234))) {
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream())));
            PrintWriter out = new PrintWriter(socket.getOutputStream(), true);

// 发送数据
            out.println("Hello, Server!");

// 接收数据
            String response = in.readLine();
            System.out.println("Server's Response: " + response);

} catch (IOException e) {
            e.printStackTrace();
        }
    }
}
```

2. **服务器接收并回应客户端：**

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

public class Server {
    public static void main(String[] args) {
        try (ServerSocket serverSocket = new ServerSocket(1234));) {
            Socket socket = serverSocket.accept();

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

// 接收客户端消息
            String clientMessage = in.readLine();
            System.out.println("Received message from client: " + clientMessage);

// 发送回应给客户端
            out.println("Hello, Client! Your message received.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
```

这样，客户端和服务器之间就建立起了TCP连接，并且能够进行数据的发送与接收。当客户端关闭连接时，服务器会检测到并释放相关资源。