MainFrame.java(与URLs.java一起完成GUI界面)- -
package org.tywo.url;
import java.awt.*; import java.awt.event.*; import java.io.*; import java.util.*; import java.util.logging.Logger;
import javax.swing.*; import javax.swing.event.*;
/** This program demonstrates how to display HTML documents in an editor pane. */ public class MainFrame { public static void main(String[] args) { JFrame frame = new EditorPaneFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.show(); } }
/** This frame contains an editor pane, a text field and button to enter a URL and load a document, and a Back button to return to a previously loaded document. */ class EditorPaneFrame extends JFrame { public EditorPaneFrame() { setTitle("URL伴侣"); setSize(WIDTH, HEIGHT);
final Stack urlStack = new Stack(); final JEditorPane editorPane = new JEditorPane(); final JTextField url = new JTextField(30);
// set up hyperlink listener
editorPane.setEditable(false); editorPane.addHyperlinkListener(new HyperlinkListener() { public void hyperlinkUpdate(HyperlinkEvent event) { if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED) { try { // remember URL for back button urlStack.push(event.getURL().toString()); // show URL in text field url.setText(event.getURL().toString());
editorPane.setPage(event.getURL()); } catch(IOException e) { editorPane.setText("Exception: " + e); } } } });
// set up checkbox for toggling edit mode
final JCheckBox editable = new JCheckBox(); editable.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { editorPane.setEditable(editable.isSelected()); } });
// set up load button for loading URL
ActionListener listener = new ActionListener() { public void actionPerformed(ActionEvent event) { try { // remember URL for back button urlStack.push(url.getText());
editorPane.setPage(url.getText()); } catch(IOException e) { editorPane.setText("Exception: " + e); } } }; JButton loadButton = new JButton("Load"); loadButton.addActionListener(listener); url.addActionListener(listener);
// set up back button and button action
JButton backButton = new JButton("Back"); backButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { if (urlStack.size() <= 1) return; try { // get URL from back button urlStack.pop(); // show URL in text field String urlString = (String)urlStack.peek(); url.setText(urlString);
editorPane.setPage(urlString); } catch(IOException e) { editorPane.setText("Exception: " + e); } } }); JButton saveAllButton = new JButton("saveAll"); saveAllButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { URLs.saveAllContentOfLinks(url.getText()); try { URLs.storeContentToFile(url.getText(),new java.net.URL(url.getText()).getHost(),"入口入口入口.html"); } catch(java.net.MalformedURLException me){} //saveAllContentOfLinks("http://127.0.0.1:8080"); } }); JButton hobbyButton = new JButton("hobby"); hobbyButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { URLs.hobby(null,"links/myLover.links"); } });
Container contentPane = getContentPane(); contentPane.add(new JScrollPane(editorPane), BorderLayout.CENTER);
// put all control components in a panel
JPanel panel = new JPanel(); panel.add(new JLabel("URL")); panel.add(url); panel.add(loadButton); panel.add(backButton); panel.add(saveAllButton); panel.add(hobbyButton); panel.add(new JLabel("Editable")); panel.add(editable);
contentPane.add(panel, BorderLayout.SOUTH); }
private static final int WIDTH =760; private static final int HEIGHT = 550; }
附上程序运行图:
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