您可以使用 AWS IoT Java SDK 中提供的 AWSIotMqttClient 类来实现每10分钟重新连接一次的功能。下面是一个示例代码:
import com.amazonaws.services.iot.client.AWSIotException;
import com.amazonaws.services.iot.client.AWSIotMqttClient;
import com.amazonaws.services.iot.client.AWSIotQos;
import com.amazonaws.services.iot.client.AWSIotTimeoutException;
public class IoTClientExample {
private static final String clientId = "your-client-id";
private static final String endpoint = "your-iot-endpoint";
private static final String certificateFile = "your-certificate-file";
private static final String privateKeyFile = "your-private-key-file";
public static void main(String[] args) {
AWSIotMqttClient client = new AWSIotMqttClient(endpoint, clientId, certificateFile, privateKeyFile);
while (true) {
try {
// 连接到 AWS IoT
client.connect();
// 订阅主题
client.subscribe("your-topic", AWSIotQos.QOS0, new AWSIotMqttClient.MqttMessageListener() {
@Override
public void onMessage(String topic, byte[] payload) {
// 处理接收到的消息
String message = new String(payload);
System.out.println("Received message: " + message);
}
});
// 每10分钟重新连接一次
Thread.sleep(10 * 60 * 1000);
// 断开连接
client.disconnect();
} catch (AWSIotException | AWSIotTimeoutException | InterruptedException e) {
e.printStackTrace();
}
}
}
}
请注意,上述示例代码中的 your-client-id
、your-iot-endpoint
、your-certificate-file
、your-private-key-file
和 your-topic
需要替换为您自己的信息。
在代码中,我们使用一个无限循环来保持连接,并在每次循环中执行以下操作:
这样,客户端将每10分钟重新连接一次,并在连接成功后接收消息。