如何在javafx项目中运行RFID标签侦听器方法？

Question

我正在研究一个涉及RFID技术的项目，此刻我想做的是，一旦运行RFIDTagListener方法，我基本上将标签传递给读取器，该读取器的序列号将发送到服务器以获取返回一些相关数据，然后将它们弹出在GUI屏幕上。到目前为止，我要做的是在手动发送阅读器数据时获取数据而没有传递标签，因为我不知道如何做，这就是问题所在。我在一个Javafx项目上工作的地方，当我尝试将RFIDTagListener方法放入MainController类中并进行编译时，不会触发taglistner方法，而只会忽略它，只是会打开GUI屏幕。但是，我也尝试将RFIDTagListener包含在main类中，但在编译时，将首先运行taglistner方法，并在5秒钟内完成后，接下来将打开我的GUI窗口。所以我不知道该方法应该在哪里准确定位。本质上，我想要使它们同时运行，taglistener在后台运行，同时同时打开GUI窗口。

任何推荐人都会非常喜欢。

MainController类：

public class MainController {
    RFID rfid = new RFID();

    String ReaderNo = null;
    String walletJson = new String();
    Gson gson = new Gson();

    public static String sensorServerURL = "http://localhost:8080/PhidgetServer2019/SensorServerRFIDdata";

    walletDAO dao = new walletDAO();
    ArrayList<wallet> allwallets = new ArrayList<wallet>();

    @FXML VBox ConsultHR;
    @FXML private Label message;
    @FXML private Label WalletName;
    @FXML private ListView<ArrayList<wallet>> list;
    @FXML private ListView<ArrayList<wallet>> RoomAList;
    @FXML private TableView<wallet> tableViewData;
    @FXML private TableColumn<wallet, String> NameColumn;
    @FXML private TableColumn<wallet, String> LocationColumn;
    @FXML private TableColumn<wallet, String> TagColumn;


    public void getTags(ActionEvent event) throws SQLException {
        allwallets = dao.getWalletTag();
        try {
            allwallets = dao.getWalletTag();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        System.out.println(allwallets);
        list.getItems().add(allwallets);
    }

    public MainController() throws PhidgetException {
        // Make the RFID Phidget able to detect loss or gain of an rfid card
        rfid.addTagListener(new RFIDTagListener() {
            // What to do when a tag is found
            public void onTag(RFIDTagEvent e) {
                try {
                    ReaderNo = String.valueOf(rfid.getDeviceSerialNumber());
                } catch (PhidgetException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

                System.out.println("Reader serial number is " + ' '+ReaderNo);
                wallet walletData = new wallet("385055");   
                walletJson = gson.toJson(walletData);       

                String resultfromserver = sendToServer(walletJson); 
                System.out.println("DEBUG: data in json : " +resultfromserver);
                wallet  walletObject = gson.fromJson(resultfromserver, wallet.class);                       

                System.out.println("DEBUG: The wallet's Data: "+' '+ walletObject);

                WalletName.setText(walletObject.getWalletName());
            }
        });

        rfid.addTagLostListener(new RFIDTagLostListener() {
            // What to do when a tag is lost
            public void onTagLost(RFIDTagLostEvent e) {
                // optional print, used as debug here
                System.out.println("DEBUG: Tag lost: " + e.getTag());
            }
       });
    }
}

主类：

public class Main extends Application {
   //RFID rfid = new RFID();

@Override
public void start(Stage primaryStage) {
    primaryStage.setTitle("Wallet locator !");
    try {
        Parent root = FXMLLoader.load(getClass().getResource("/application/Main.fxml"));
        Scene scene = new Scene(root);
        scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
        primaryStage.setScene(scene);
        primaryStage.show();
    } catch(Exception e) {
        e.printStackTrace();
    }
 public static void main(String[] args) throws PhidgetException {
    new MainController();           
    launch(args);
 }
}

Main.FXML：

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.ListView?>
<?import javafx.scene.control.TableColumn?>  
<?import javafx.scene.control.TableView?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane prefHeight="269.0" prefWidth="403.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.MainController">
   <Button layoutX="149.0" layoutY="251.0" mnemonicParsing="false" onAction="#getTags" prefHeight="46.0" prefWidth="82.0" text="tags" />
   <Label fx:id="message" layoutX="139.0" layoutY="209.0" prefHeight="35.0" prefWidth="101.0" />
   <ListView id="studentObservableList" fx:id="list" layoutY="209.0" prefHeight="131.0" prefWidth="139.0" />

   <TableView fx:id="tableViewData" prefHeight="200.0" prefWidth="231.0" style="-fx-border-color: red;">
      <columns>
         <TableColumn fx:id="NameColumn" prefWidth="75.0" text="Name"/>
         <TableColumn fx:id="LocationColumn" prefWidth="75.0" text="Location" />
         <TableColumn fx:id="TagColumn" prefWidth="75.0" text="Tag" />
      </columns>
   </TableView>

   <Button layoutX="251.0" layoutY="14.0" mnemonicParsing="false" onAction="#getWallets" prefHeight="56.0" prefWidth="82.0" text="wallets" />
</AnchorPane>

Answer 1

第一点