我想使用java swing制作一个标签式网页浏览器，而javafx我现在在 java swing 中使用嵌入式javafx 进行了一些代码我想将其设置为标签式网页浏览器，以便我能够在我的网络浏览器中打开多标签。
但问题是每当我添加新标签选项时，它都会打开新标签页 但它覆盖了上一个标签（意味着它删除了最后一个标签并打开 同一窗口中的新内容。）
请告诉我正确的方法在我的网络浏览器中添加多标签选项 我的浏览器代码是：
package mybrowser;
import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.embed.swing.JFXPanel;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebEvent;
import javafx.scene.web.WebView;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.MalformedURLException;
import java.net.URL;
import static javafx.concurrent.Worker.State.FAILED;
public class MyBrowser extends JFrame {
private final JFXPanel jfxPanel = new JFXPanel();
private WebEngine engine;
private final JPanel panel = new JPanel(new BorderLayout());
private final JLabel lblStatus = new JLabel();
private final JButton btnGo = new JButton("Go");
private final JTextField txtURL = new JTextField();
private final JProgressBar progressBar = new JProgressBar();
public MyBrowser() {
super();
initComponents();
}
private void initComponents() {
createScene();
ActionListener al = new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
loadURL(txtURL.getText());
}
};
btnGo.addActionListener(al);
txtURL.addActionListener(al);
progressBar.setPreferredSize(new Dimension(150, 18));
progressBar.setStringPainted(true);
JPanel topBar = new JPanel(new BorderLayout(5, 0));
topBar.setBorder(BorderFactory.createEmptyBorder(3, 5, 3, 5));
topBar.add(txtURL, BorderLayout.CENTER);
topBar.add(btnGo, BorderLayout.EAST);
JPanel statusBar = new JPanel(new BorderLayout(5, 0));
statusBar.setBorder(BorderFactory.createEmptyBorder(3, 5, 3, 5));
statusBar.add(lblStatus, BorderLayout.CENTER);
statusBar.add(progressBar, BorderLayout.EAST);
panel.add(topBar, BorderLayout.NORTH);
panel.add(jfxPanel, BorderLayout.CENTER);
panel.add(statusBar, BorderLayout.SOUTH);
getContentPane().add(panel);
setPreferredSize(new Dimension(1024, 600));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pack();
}
private void createScene() {
Platform.runLater(new Runnable() {
@Override
public void run() {
WebView view = new WebView();
engine = view.getEngine();
engine.titleProperty().addListener(new ChangeListener<String>() {
@Override
public void changed(ObservableValue<? extends String> observable, String oldValue, final String newValue) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
MyBrowser.this.setTitle(newValue);
}
});
}
});
engine.setOnStatusChanged(new EventHandler<WebEvent<String>>() {
@Override
public void handle(final WebEvent<String> event) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
lblStatus.setText(event.getData());
}
});
}
});
engine.locationProperty().addListener(new ChangeListener<String>() {
@Override
public void changed(ObservableValue<? extends String> ov, String oldValue, final String newValue) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
txtURL.setText(newValue);
}
});
}
});
engine.getLoadWorker().workDoneProperty().addListener(new ChangeListener<Number>() {
@Override
public void changed(ObservableValue<? extends Number> observableValue, Number oldValue, final Number newValue) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
progressBar.setValue(newValue.intValue());
}
});
}
});
engine.getLoadWorker()
.exceptionProperty()
.addListener(new ChangeListener<Throwable>() {
public void changed(ObservableValue<? extends Throwable> o, Throwable old, final Throwable value) {
if (engine.getLoadWorker().getState() == FAILED) {
SwingUtilities.invokeLater(new Runnable() {
@Override public void run() {
JOptionPane.showMessageDialog(
panel,
(value != null) ?
engine.getLocation() + "\n" + value.getMessage() :
engine.getLocation() + "\nUnexpected error.",
"Loading error...",
JOptionPane.ERROR_MESSAGE);
}
});
}
}
});
jfxPanel.setScene(new Scene(view));
}
});
}
public void loadURL(final String url) {
Platform.runLater(new Runnable() {
@Override
public void run() {
String tmp = toURL(url);
if (tmp == null) {
tmp = toURL("http://" + url);
}
engine.load(tmp);
}
});
}
private static String toURL(String str) {
try {
return new URL(str).toExternalForm();
} catch (MalformedURLException exception) {
return null;
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
MyBrowser browser = new MyBrowser();
browser.setVisible(true);
browser.loadURL("http://google.com");
}
});
}
}
答案 0 :(得分：1)
package myweb;
import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
public class Myweb extends Application {
@Override
public void start(Stage primaryStage) {
Group root = new Group();
BorderPane borderPane = new BorderPane();
TabPane tb=new TabPane();
tb.setPrefSize(1365, 768);
//tb.setSide(Side.TOP);
Createfirsttab(tb);
final Tab newtab = new Tab();
newtab.setText(" + ");
newtab.setClosable(false);
tb.getTabs().addAll(newtab);
ScrollPane sp = new ScrollPane();
tb.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<Tab>() {
@Override
public void changed(ObservableValue<? extends Tab> observable,
Tab oldSelectedTab, Tab newSelectedTab) {
if (newSelectedTab == newtab) {
Tab tab = new Tab();
tab.setText(" ");
//WebView - to display, browse web pages.
WebView webView = new WebView();
final WebEngine webEngine = webView.getEngine();
//webEngine.load(DEFAULT_URL);
final TextField urlField = new TextField("http://");
webEngine.locationProperty().addListener(new ChangeListener<String>() {
@Override public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
urlField.setText(newValue);
}
});
//Action definition for the Button Go.
EventHandler<ActionEvent> goAction = new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
webEngine.load(urlField.getText().startsWith("http://")
? urlField.getText()
: "http://" + urlField.getText());
}
};
urlField.setOnAction(goAction);
Button goButton = new Button("Go");
goButton.setOnAction(goAction);
HBox hBox = new HBox(5);
hBox.getChildren().setAll(urlField, goButton);
HBox.setHgrow(urlField, Priority.ALWAYS);
final VBox vBox = new VBox(5);
sp.setContent(webView);
vBox.getChildren().setAll(hBox, sp);
VBox.setVgrow(webView, Priority.ALWAYS);
tab.setContent(vBox);
final ObservableList<Tab> tabs = tb.getTabs();
tab.closableProperty().bind(Bindings.size(tabs).greaterThan(2));
tabs.add(tabs.size() - 1, tab);
//tb.getTabs().add(tab);
tb.getSelectionModel().select(tab);
}
}
});
borderPane.setCenter(tb);
root.getChildren().add(borderPane);
Scene scene = new Scene(root, 1200, 600);
primaryStage.setTitle("Wellcome");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
private Tab Createfirsttab(TabPane tb) {
Tab stab =new Tab(" Wellcome ");
Label label = new Label();
label.setText("\n\t\t\t To start browsing, click on New Tab.");
label.setFont(Font.font("Arial", FontWeight.BOLD, 20));
stab.setContent(label);
tb.getTabs().add(stab);
tb.getSelectionModel().select(stab);
return stab;
}
}
使用它作为你的项目不要复杂。