Java网络编程问题：TCP连接关闭异常示例

原创古城微笑少年丶 2024-10-10 18:12 88阅读 0赞

在Java的TCP编程中，如果客户端主动断开连接，可能会抛出`SocketException`。具体到"TCP连接关闭异常示例"，我们可以创建一个简单的客户端程序来演示。

首先，创建一个服务器端（服务端代码省略）：

```java
ServerSocket server = new ServerSocket(8080);
Socket client = null;

try {
    // Wait for a connection
    client = server.accept();

System.out.println("Client connected: " + client);

// Close the connection to simulate client closing it
    client.close();
} catch (IOException e) {
    System.err.println("Error accepting connection: " + e);
    try {
        if (client != null)
            client.close();
    } catch (IOException f) {
        System.err.println("Error closing client socket: " + f);
    }
}
```

然后创建一个客户端，模拟主动断开连接：

```java
import java.io.IOException;
import java.net.Socket;

public class ClientSimulator {

public static void main(String[] args) {
        Socket clientSocket = null;

try {
            // Connect to server (replace with server IP)
            clientSocket = new Socket("localhost", 8080);

System.out.println("Connected to server: " + clientSocket);

// Simulate connection close
            clientSocket.close();

System.out.println("Client socket closed.");
        } catch (IOException e) {
            System.err.println("Error connecting to server: " + e);
        } finally {
            try {
                if (clientSocket != null)
                    clientSocket.close();
            } catch (IOException f) {
                System.err.println("Error closing client socket: " + f);
            }
        }
    }
}
```

在这个示例中，客户端主动关闭连接，服务器端会捕获到`SocketException`异常。