如何在模式窗口表格FXML上运行进度条？

Question

首先我想道歉，如果这个问题有明显的答案，但我没有在互联网上找到合适的答案。我已经遵循了一些教程，但我碰到了一个问题，无法理解我的错误。我正在尝试运行多线程桌面应用程序，其中有一个任务（TaskGetRetailersURL实现Runnable）我想在模态窗口上放置进度条。我有一个运行我的应用程序的主线程。在这个MAIN线程上，我为这个任务启动了新的Thread - TaskGetRetailersURL和Modal窗口的另一个第二个Thread - TaskModalWindow也实现了runnable。我在两个线程上启动它们的原因是，如果Modal窗口不在另一个帖子上，那么模态窗口被阻止显示“没有响应！”。 TaskGetRetailersURL需要一些时间来收集一些数据x项目，这些项目是进度条大小所需要的（我不知道将会有多少项目，我不知道它将需要的时间。）我正在使用一个标志和while循环来等待为此初始化控制器中的参数。我想在点击搜索按钮后显示模态窗口（我不想等到收集数据x。如果窗口显示并且进度条的值为0，则可以。）。如果我执行方法progressWindowController.setProgressBarListener（）;和progressWindowController.setProgressIndicator（）; progressWindowController.startTask（）;现在使用此代码，在TaskGetRetailersURL完成并收集数据后显示模态窗口。

1. 我做错了什么？
2. 如何在startSearchUsers(ActionEvent event)方法之后显示带有进度条的模态窗口，而不显示在任务结尾？它显示前有30秒的时间段。

我发送文件： UsersTabController.java - 这是主线程运行的seacrh方法。

package com.mjp.java.controllers;


@Component
public class UsersTabController implements FxmlController {

    @FXML
    private TextField fromRating;
    @FXML
    private TextField toRating;
    @FXML
    private TextField searchWord;

    @FXML
    private Tab usersTab;

    @FXML
    private ComboBox<String> valuesComboBox;



    private final ExceptionWriter exceptionsWriter;

    @Autowired
    private RetailerDao retailerDao;



    public static ExecutorService executorUsers = Executors.newFixedThreadPool(CrawlerConstants.MYTHREADS);

    @Autowired
    public UsersTabController(ExceptionWriter exceptionsWriter) {
        this.exceptionsWriter = exceptionsWriter;
    }



    @Override
    public void initialize() {
        valuesComboBox.getItems().removeAll(valuesComboBox.getItems());
        valuesComboBox.getItems().addAll("1000", "2000", "3000","4000");
        valuesComboBox.getSelectionModel().select("1000");
    }

    @FXML
    private void startSearchUsers(ActionEvent event) throws IOException, InterruptedException {

        String searchString = searchWord.getText();
        int numbers =  Integer.parseInt(valuesComboBox.getValue());

        System.out.println(numbers);



            List<Element> result = this.getArrayElementsFirstSearch(searchString);

            if(!result.isEmpty()){



                TaskModalWindow mdc = new TaskModalWindow(event);
                Platform.runLater(mdc);

                TaskGetRetailersURL tsu = new TaskGetRetailersURL (result, numbers, retailerDao);
                Thread t2 = new Thread(tsu);
                t2.start();





            }

    }

    private List<Element> getArrayElementsFirstSearch(String input) throws IOException{

        String searchWordInput = CrawlerUtil.fixSearchWordForUsers(input);
        String inputSearchURL = CrawlerConstants.SEARCH_URL_INPUT_PREFFIX + searchWordInput + CrawlerConstants.SEARCH_URL_INPUT_SUFFIX;
        Document document = Jsoup.connect(inputSearchURL).timeout(10*1000).get();

        List<Element> check =  document.select(CrawlerConstants.SELECTOR_FOR_PAGINATION);
        HeapContainer.firstSetPaginationsAsElement = check;

        return check;


    }


}

TaskModalWindow.java - 启动模态窗口。

package com.mjp.java.threads;

import java.io.IOException;

import com.mjp.java.spring.config.SpringFXMLLoader;

import javafx.event.ActionEvent;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Modality;
import javafx.stage.Stage;

public class TaskModalWindow implements Runnable {

    private ActionEvent event;

    public TaskModalWindow (ActionEvent event) {
        this.event = event;
    }

    private void showProgressBar(ActionEvent event){
        Stage stage = new Stage();
        Parent root;
        try {
            root = FXMLLoader.load(SpringFXMLLoader.class.getResource("/fxml/ProgressWindow.fxml"));
            stage.setScene(new Scene(root));
        } catch (IOException e) {
            e.printStackTrace();
        }
        stage.setTitle("Searching....");
        stage.initModality(Modality.WINDOW_MODAL);
        stage.initOwner(((Node) event.getSource()).getScene().getWindow() );
        stage.show();
    }

    @Override
    public void run() {
        this.showProgressBar(event);

    }
}

ProgressWindowController.java

package com.mjp.java.controllers;

import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.concurrent.Task;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.ProgressBar;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;

import org.springframework.stereotype.Component;



@Component
public class ProgressWindowController implements FxmlController {


    @FXML
    private Button buttonStop;

    @FXML
    private ProgressBar progressBar;

    @FXML
    private ProgressIndicator progressIndicator;

    @FXML
    private Text txtState;

    private Task<?> searchWorker;

    public ProgressWindowController (){

    }

    @FXML
    private void onButtonClick() {

    }

    private void changeStateProcessIndicator() {

    }

    public ProgressBar getProgressBar(){
        return progressBar;
    }

    public ProgressIndicator getProgressIndicator(){
        return progressIndicator;
    }

    private Task<?> createSearchTaskItems(int searchedUrls) {
        return new Task<Object>() {

            @Override
            protected Object call() throws Exception {
                while (TaskItemsFeedback.workDoneItems + TaskItemsSold.workDoneItems <= searchedUrls ) {
                    updateProgress(TaskItemsFeedback.workDoneItems+TaskItemsSold.workDoneItems, searchedUrls);
                }
                return true;
            }
        };
    }
    private Task<?> createSearchUserTask(int searchedUrls) {
        return new Task<Object>() {

            @Override
            protected Object call() throws Exception {
                while (TaskFilterRetailers.workDoneUsers <= searchedUrls ) {
                    updateProgress(TaskFilterRetailers.workDoneUsers, searchedUrls);
                }
                return true;
            }
        };
    }

    public void setProgressBarListener(){
        progressBar.indeterminateProperty().addListener(new ChangeListener<Boolean>() {
            @Override
            public void changed(ObservableValue<? extends Boolean> ov, Boolean t, Boolean t1) {
                if (t1) {
                    txtState.setText("Calculating Time");
                } else {
                    txtState.setText("In Progress");

                }
            }
        });
        progressBar.progressProperty().addListener(new ChangeListener<Number>() {


            @Override
            public void changed(ObservableValue<? extends Number> ov, Number t, Number t1) {

                if(t1.doubleValue() == 1){
                    txtState.setText("Work Done");
                    txtState.setFill(Color.GREEN);
                    buttonStop.setDisable(true);
                }
            }

        });

    }

    public void setProgressIndicator(){

        progressIndicator.indeterminateProperty().addListener(new ChangeListener<Boolean>() {

            @Override
            public void changed(ObservableValue<? extends Boolean> ov, Boolean t, Boolean t1) {
                if(t1){
                    txtState.setText("Calculating Time");
                    txtState.setFill(Color.BLUE);
                } else{
                    txtState.setText("In Progress");

                }
            }
        });
    }

    public void startTask() throws InterruptedException{

        while(TaskGetRetailersURL.productsSize == 0 && TaskItemsStart.allUrlsAndItemsForExecuting==0){
            System.out.println("Items Finder");
        }
        if(TaskGetRetailersURL.productsSize != 0){
            searchWorker = createSearchUserTask(TaskGetRetailersURL.productsSize);
        } else if(TaskItemsStart.allUrlsAndItemsForExecuting!=0){
            searchWorker = createSearchTaskItems((TaskItemsStart.allUrlsAndItemsForExecuting));
        }

        progressBar.progressProperty().unbind();
        progressBar.progressProperty().bind(searchWorker.progressProperty());
        new Thread(searchWorker).start();
    }

    @Override
    public void initialize() {
        progressBar.setProgress(0);
        setProgressBarListener();
        setProgressIndicator();
        startTask();

    }
}

ProgressWindow.fxml

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.ProgressBar?>
<?import javafx.scene.control.ProgressIndicator?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>
<?import javafx.scene.text.Text?>

<AnchorPane prefHeight="201.0" prefWidth="399.0" xmlns="http://javafx.com/javafx/8.0.60" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.mvp.java.controllers.ProgressWindowController">
   <children>
      <ProgressBar fx:id="progressBar" layoutX="50.0" layoutY="63.0" prefHeight="12.0" prefWidth="150.0" progress="0.0" />
      <Button fx:id="buttonStop" alignment="CENTER" contentDisplay="RIGHT" layoutX="314.0" layoutY="126.0" mnemonicParsing="false" onAction="#onButtonClick" prefHeight="25.0" prefWidth="61.0" text="Stop" textAlignment="CENTER" />
      <ProgressIndicator fx:id="progressIndicator" layoutX="231.0" layoutY="61.0" progress="0.0" />
      <Text fx:id="txtState" fill="#2708d7" layoutX="274.0" layoutY="79.0" strokeType="OUTSIDE" strokeWidth="0.0" text="In Progress" textAlignment="CENTER" wrappingWidth="101.13671875">
         <font>
            <Font size="18.0" />
         </font>
      </Text>
   </children>
</AnchorPane>

TaskGetRetailersURL.java

package com.mjp.java.threads;

    import java.io.IOException;


    public class TaskGetRetailersURL implements Runnable {

         public int productsSize = 0;

public TaskGetRetailersURL (List<Element> result, int numberOfPages, RetailerDao retailerDao){
//setting the element
}

        @Override
        public void run() {

            try {
                searchUsers(result, numberOfPages);
            } catch (IOException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
public void searchUsers(List<Element> result, int numberOfPages){
//This method take long time to collect data and initialize productsSize 
}



    }