android (firebase)接收推送时如何从通知中获取数据？

public class MyFirebaseMessagingService extends FirebaseMessagingService {
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // 获取推送通知的数据
        Map<String, String> data = remoteMessage.getData();
        
        // 处理推送通知的数据
        if (data.containsKey("key1")) {
            String value1 = data.get("key1");
            // 进行相应的操作
        }
        
        // 获取推送通知的标题、内容等信息
        RemoteMessage.Notification notification = remoteMessage.getNotification();
        if (notification != null) {
            String title = notification.getTitle();
            String body = notification.getBody();
            // 显示通知等操作
        }
    }
}