使用JavaFX显示JTable [英] Display JTable with JavaFX

查看：112 发布时间：2018/12/4 13:40:42 java swing javafx web-scraping jtable

本文介绍了使用JavaFX显示JTable的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想从网页上读取数字并在程序中使用它们。此程序显示网页，但如何显示网页下方的表格？如何在表格中填入网页上的日期和价格。

  import java.awt.BorderLayout; 
 
 import javax.swing.JFrame; 
 import javax.swing.JPanel; 
 import javax.swing.JScrollPane; 
 import javax.swing.JTable; 
 import javax.swing.JTextArea; 
 import javax.swing.SwingUtilities; 
 import javax.swing.table.AbstractTableModel; 
 import javax.swing.table.TableModel; 
 
 import javafx.application.Platform; 
 import javafx.embed.swing.JFXPanel; 
 import javafx.scene.Scene; 
 import javafx.scene.paint.Color; 
 
 public class Step4 {
 
 private void initAndShowGUI（final String url）{
 //此方法在EDT线程上调用
 JFrame frame =新的JFrame（Swing和JavaFX）; 
 
 final JFXPanel fxPanel = new JFXPanel（）; 
 JPanel mainPanel = new JPanel（）; 
 mainPanel.setLayout（new BorderLayout（））; 
 mainPanel.add（fxPanel，BorderLayout.NORTH）; 
 
 TableModel dataModel = new AbstractTableModel（）{
 private static final long serialVersionUID = -147208558114868864L; 
 public int getColumnCount（）{return 10; 
 public int getRowCount（）{return 10;} 
 public Object getValueAt（int row，int col）{return new Integer（row * col）; } 
}; 
 JTable table = new JTable（dataModel）; 
 JScrollPane tableContainer = new JScrollPane（table）; 
 
 JPanel display = new JPanel（）; 
 display.setLayout（new BorderLayout（））; 
 display.add（tableContainer，BorderLayout.CENTER）; 
 mainPanel.add（display，BorderLayout.SOUTH）; 
 
 frame.add（mainPanel）; 
 
 frame.pack（）; 
 frame.setSize（1000,650）; 
 frame.setVisible（true）; 
 frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）; 
 
 Platform.runLater（new Runnable（）{
 @Override 
 public void run（）{
 initFX（fxPanel，url）; 
} 
}）; 
} 
 
 private void initFX（JFXPanel fxPanel，String url2）{
 //此方法在JavaFX线程上调用
场景场景= createScene（url2）; 
 fxPanel.setScene（scene）; 
} 
 
 private场景createScene（String url2）{
 
场景场景=新场景（新Browser_1（url2），750,500，Color.web（＃666970 ））; 
返回（场景）; 
} 
 
 public static void main（String [] args）{
 
 final String url =https://www.tsp.gov/investmentfunds/shareprice /sharePriceHistory.shtml; 
 SwingUtilities.invokeLater（new Runnable（）{
 
 @Override 
 public void run（）{
 Step4 s = new Step4（）; 
 s .initAndShowGUI（url）; 
} 
}）; 
} 
} 
 
类Browser_1扩展Region {
 
最终的WebView浏览器=新的WebView（）; 
 final WebEngine webEngine = browser.getEngine（）; 
 
 public Browser_1（String url）{
 //应用样式
 getStyleClass（）。add（browser）; 
 //加载网页
 webEngine.load（url）; 
 //将网页视图添加到场景
 getChildren（）。add（browser）; 
} 
 
 @SuppressWarnings（unused）
 private Node createSpacer（）{
 Region spacer = new Region（）; 
 HBox.setHgrow（spacer，Priority.ALWAYS）; 
返回spacer; 
} 
 
 @Override protected void layoutChildren（）{
 double w = getWidth（）; 
 double h = getHeight（）; 
 layoutInArea（浏览器，0,0，w，h，0，HPos.CENTER，VPos.CENTER）; 
} 
 
 @Override protected double computePrefWidth（double height）{
 return 750; 
} 
 
 @Override protected double computePrefHeight（double width）{
 return 500; 
} 
}

解决方案

In大纲，

在后台添加一个合适的监听器 Worker

  import java .awt.BorderLayout; 
 import java.awt.Dimension; 
 import java.awt.EventQueue; 
 import javax.swing.JFrame; 
 import javafx.application.Platform; 
 import javafx.beans.Observable; 
 import javafx.concurrent.Worker; 
 import javafx.embed.swing.JFXPanel; 
 import javafx.scene.Scene; 
 import javafx.scene.layout.StackPane; 
 import javafx.scene.web.WebEngine; 
 import javafx.scene.web.WebView; 
 import javax.swing.JScrollPane; 
 import javax.swing.JTable; 
 import javax.swing.table.AbstractTableModel; 
 
 / ** 
 * @see https://stackoverflow.com/a/32396344/230513 
 * @see https://stackoverflow.com/a/31576647/ 230513 
 * / 
公共类WebViewTable {
 
私有JTable表; 
私有WebView webView; 
 
 private void initAndShowGUI（）{
 //此方法在EDT线程上调用
 JFrame frame = new JFrame（WebViewTable）; 
 frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）; 
 final JFXPanel fxPanel = new JFXPanel（）{
 
 @Override 
 public Dimension getPreferredSize（）{
 return new Dimension（800,400）; 
} 
}; 
 frame.add（fxPanel，BorderLayout.CENTER）; 
 table = new JTable（）{
 
 @Override 
 public Dimension getPreferredScrollableViewportSize（）{
 return new Dimension（800,100）; 
} 
}; 
 frame.add（new JScrollPane（table），BorderLayout.SOUTH）; 
 frame.pack（）; 
 frame.setLocationRelativeTo（null）; 
 frame.setVisible（true）; 
 
 Platform.runLater（（） - > {
 initFX（fxPanel）; 
}）; 
} 
 
 private void initFX（JFXPanel fxPanel）{
 //此方法在JavaFX线程上调用
场景场景= createScene（）; 
 fxPanel.setScene（scene）; 
} 
 
 private场景createScene（）{
 StackPane root = new StackPane（）; 
场景场景=新场景（根）; 
 webView = new WebView（）; 
 WebEngine webEngine = webView.getEngine（）; 
 Worker worker = webEngine.getLoadWorker（）; 
 worker.stateProperty（）。addListener（（Observable o） - > {
 if（worker.getState（）== Worker.State.SUCCEEDED）{
 EventQueue.invokeLater（（） - > {
 table.setModel（new AbstractTableModel（）{
 @Override 
 public String getColumnName（int col）{
 returnDocument URI; 
} 
 
 @Override 
 public int getColumnCount（）{
 return 1; 
} 
 
 @Override 
 public int getRowCount（ ）{
返回1; 
} 
 
 @Override 
 public Object getValueAt（int row，int col）{
返回webEngine.getDocument（）。 getDocume ntURI（）; 
} 
}）; 
}）; 
} 
}）; 
 webEngine.load（https://example.com）; 
 root.getChildren（）。add（webView）; 
返回场景; 
} 
 
 public static void main（String [] args）{
 EventQueue.invokeLater（new WebViewTable（）:: initAndShowGUI）; 
} 
}

I'd like to read numbers from a web page and use them in a program. This program displays the web page, but how do I display the table below the web page? And how do I populate the table with the dates and prices from the web page.

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;

import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Scene;
import javafx.scene.paint.Color;

public class Step4 {

    private void initAndShowGUI(final String url) {
        // This method is invoked on the EDT thread
        JFrame frame = new JFrame("Swing and JavaFX");

        final JFXPanel fxPanel = new JFXPanel();
        JPanel mainPanel = new JPanel();
        mainPanel.setLayout(new BorderLayout());
        mainPanel.add(fxPanel, BorderLayout.NORTH);

        TableModel dataModel = new AbstractTableModel() {
            private static final long serialVersionUID = -147208558114868864L;
            public int getColumnCount() { return 10; }
            public int getRowCount() { return 10;}
            public Object getValueAt(int row, int col) { return new Integer(row*col); }
        };
        JTable table = new JTable(dataModel);
        JScrollPane tableContainer = new JScrollPane(table);

        JPanel display = new JPanel();
        display.setLayout(new BorderLayout());
        display.add(tableContainer, BorderLayout.CENTER);
        mainPanel.add(display, BorderLayout.SOUTH);

        frame.add(mainPanel);

        frame.pack();
        frame.setSize(1000, 650);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        Platform.runLater(new Runnable() {
            @Override
            public void run() {
                initFX(fxPanel, url);
            }
       });
    }

    private void initFX(JFXPanel fxPanel, String url2) {
        // This method is invoked on the JavaFX thread
        Scene scene = createScene(url2);
        fxPanel.setScene(scene);
    }

    private Scene createScene(String url2) {

        Scene scene = new Scene(new Browser_1(url2),750,500, Color.web("#666970"));
        return (scene);
    }

    public static void main(String[] args) {

        final String url = "https://www.tsp.gov/investmentfunds/shareprice/sharePriceHistory.shtml";
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                Step4 s = new Step4();
                s.initAndShowGUI(url);
            }
        });
    }
}

class Browser_1 extends Region {

    final WebView browser = new WebView();
    final WebEngine webEngine = browser.getEngine();

    public Browser_1(String url) {
        //apply the styles
        getStyleClass().add("browser");
        // load the web page
        webEngine.load(url);
        //add the web view to the scene
        getChildren().add(browser);
    }

    @SuppressWarnings("unused")
    private Node createSpacer() {
        Region spacer = new Region();
        HBox.setHgrow(spacer, Priority.ALWAYS);
        return spacer;
    }

    @Override protected void layoutChildren() {
        double w = getWidth();
        double h = getHeight();
        layoutInArea(browser,0,0,w,h,0, HPos.CENTER, VPos.CENTER);
    }

    @Override protected double computePrefWidth(double height) {
        return 750;
    }

    @Override protected double computePrefHeight(double width) {
        return 500;
    }
}

解决方案

In outline,

Add a suitable listener to the background Worker used by the WebEngine.
In that suitable listener, traverse the Document Object Model of the web page for the results of interest, perhaps using the approach shown here.
Construct a TableModel that supplies the results to the JTable when requested, possibly using the approach shown here.
Post a Swing event that invokes setModel() with the updated TableModel; the table will update itself accordingly.

Based on this example, the InvalidationListener below displays the result returned by getDocumentURI().

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javafx.application.Platform;
import javafx.beans.Observable;
import javafx.concurrent.Worker;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;

/**
 * @see https://stackoverflow.com/a/32396344/230513
 * @see https://stackoverflow.com/a/31576647/230513
 */
public class WebViewTable {

    private JTable table;
    private WebView webView;

    private void initAndShowGUI() {
        // This method is invoked on the EDT thread
        JFrame frame = new JFrame("WebViewTable");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        final JFXPanel fxPanel = new JFXPanel(){

            @Override
            public Dimension getPreferredSize() {
                return new Dimension(800, 400);
            }
        };
        frame.add(fxPanel, BorderLayout.CENTER);
        table = new JTable(){

            @Override
            public Dimension getPreferredScrollableViewportSize() {
                return new Dimension(800, 100);
            }
        };
        frame.add(new JScrollPane(table), BorderLayout.SOUTH);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

        Platform.runLater(() -> {
            initFX(fxPanel);
        });
    }

    private void initFX(JFXPanel fxPanel) {
        // This method is invoked on the JavaFX thread
        Scene scene = createScene();
        fxPanel.setScene(scene);
    }

    private Scene createScene() {
        StackPane root = new StackPane();
        Scene scene = new Scene(root);
        webView = new WebView();
        WebEngine webEngine = webView.getEngine();
        Worker worker = webEngine.getLoadWorker();
        worker.stateProperty().addListener((Observable o) -> {
            if (worker.getState() == Worker.State.SUCCEEDED) {
                EventQueue.invokeLater(() -> {
                    table.setModel(new AbstractTableModel() {
                        @Override
                        public String getColumnName(int col) {
                            return "Document URI";
                        }

                        @Override
                        public int getColumnCount() {
                            return 1;
                        }

                        @Override
                        public int getRowCount() {
                            return 1;
                        }

                        @Override
                        public Object getValueAt(int row, int col) {
                            return webEngine.getDocument().getDocumentURI();
                        }
                    });
                });
            }
        });
        webEngine.load("https://example.com");
        root.getChildren().add(webView);
        return scene;
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new WebViewTable()::initAndShowGUI);
    }
}

这篇关于使用JavaFX显示JTable的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

查看全文

使用JavaFX显示JTable [英] Display JTable with JavaFX

问题描述

相关文章

Java开发最新文章

热门教程

热门工具

登录关闭

使用JavaFX显示JTable [英] Display JTable with JavaFX

问题描述

相关文章

Java开发最新文章

热门教程

热门工具

登录 关闭

登录关闭