spidercontrol.java

不错的网络蜘蛛

        centerPane.addTab("Search Parameters", formTab);

        treeTab.setLayout(new java.awt.BorderLayout());

        searchTreePane.setBackground(new java.awt.Color(204, 204, 204));
        searchTreePane.setBorder(new javax.swing.border.EtchedBorder());
        searchTree.addTreeSelectionListener(new javax.swing.event.TreeSelectionListener() {
            public void valueChanged(javax.swing.event.TreeSelectionEvent evt) {
                searchTreeSelectionChange(evt);
            }
        });

        searchTreePane.setViewportView(searchTree);

        treeTab.add(searchTreePane, java.awt.BorderLayout.CENTER);

        pageStatistics.setBackground(new java.awt.Color(204, 204, 204));
        pageStatistics.setColumns(80);
        pageStatistics.setRows(2);
        pageStatistics.setText("Select item to display its statistics");
        pageStatistics.setBorder(new javax.swing.border.TitledBorder("Page statistics:"));
        treeTab.add(pageStatistics, java.awt.BorderLayout.SOUTH);

        centerPane.addTab("Search Tree", treeTab);

        messageTab.setBackground(new java.awt.Color(204, 204, 204));
        messageTab.setBorder(new javax.swing.border.EtchedBorder());
        messageTab.setVerticalScrollBarPolicy(javax.swing.JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        messageArea.setColumns(100);
        messageArea.setRows(5);
        messageTab.setViewportView(messageArea);

        centerPane.addTab("Messages", messageTab);

        getContentPane().add(centerPane, java.awt.BorderLayout.CENTER);

        statusLabel.setText("Inactive");
        getContentPane().add(statusLabel, java.awt.BorderLayout.SOUTH);

        pack();
    }//GEN-END:initComponents

    private void searchTreeSelectionChange(javax.swing.event.TreeSelectionEvent evt) {//GEN-FIRST:event_searchTreeSelectionChange
        // TODO add your handling code here:
        TreePath path = searchTree.getSelectionPath();
        if(path == null)
            return;
        DefaultMutableTreeNode node = (DefaultMutableTreeNode)path.getLastPathComponent();
        UrlTreeNode data = (UrlTreeNode)node.getUserObject();
        if(data != null && data instanceof UrlTreeNode)
        {
         String kstr = data.getKeywords();
         pageStatistics.setText("Keywords found : "+kstr+"\n");
         pageStatistics.append(data.getNodeStats());
        }
        else
         pageStatistics.setText("");
        
    }//GEN-LAST:event_searchTreeSelectionChange

    private void viewButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_viewButtonActionPerformed
        // TODO add your handling code here:
     try{
      TreePath path = searchTree.getSelectionPath();
       if(path == null)
            return;
       DefaultMutableTreeNode node = (DefaultMutableTreeNode)path.getLastPathComponent();
       UrlTreeNode data = (UrlTreeNode)node.getUserObject();
        if(data instanceof UrlTreeNode)
        {
         String urlstr = data.getUrlString();   
         Runtime.getRuntime().exec("C:\\program files\\Internet Explorer\\iexplore.exe "+urlstr);
        }
        }
        catch(Exception e)
        {
         JOptionPane.showMessageDialog(this,"Could not launch Internet Explorer","Error",JOptionPane.ERROR_MESSAGE);
        }
    }//GEN-LAST:event_viewButtonActionPerformed

    private void clearMessageButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_clearMessageButtonActionPerformed
        // TODO add your handling code here:
        messageArea.setText("");
    }//GEN-LAST:event_clearMessageButtonActionPerformed

    private void stopButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_stopButtonActionPerformed
        // TODO add your handling code here:
        if(spidey != null)
           spidey.stopSearch();
    }//GEN-LAST:event_stopButtonActionPerformed

    private void startButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_startButtonActionPerformed
        // TODO add your handling code here:
       int sitelimit =100,  depthlimit=100;
       
        try{
          sitelimit = Integer.parseInt(siteField.getText().trim()) ;
          depthlimit = Integer.parseInt(depthField.getText().trim()) ;
        }
        catch(NumberFormatException e)
        {
           errorLabel.setText("Invalid input for site limit or depth limit");
           return;
        }
 //
 // retrieve domains from combobox
 //
          Object selected[] = domainList.getSelectedValues();
          String[] domains = new String[selected.length];
          for(int i = 0; i < domains.length; i++)
            domains[i]= selected[i].toString();
 //
 // retrieve search strings
 //
          StringTokenizer keywordtokens = new StringTokenizer(keywordArea.getText(), "\n");
          String keywords[] = new String[keywordtokens.countTokens()];
          int i = 0;
          while(keywordtokens.hasMoreTokens())
            keywords[i++] = keywordtokens.nextToken();
  //
  // retrieve start site
  //
          String startsite = startSiteField.getText();
          if(startsite.length() <= 0)
          {
            errorLabel.setText("Starting web site cannot be blank!");
            return;
          }
     //
     // create and start the spider
     //
          errorLabel.setText("");
          pageStatistics.setText("Click on site to view its statistics");
          centerPane.setSelectedIndex(1);  // show the search tree tab
          spidey = new Spider(searchTree, messageArea, statusLabel, startsite, keywords, domains, sitelimit,depthlimit);
          spidey.start();
          
    }//GEN-LAST:event_startButtonActionPerformed

    private void exitButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_exitButtonActionPerformed
        // TODO add your handling code here:
        System.exit(0);
    }//GEN-LAST:event_exitButtonActionPerformed
    
    /** Exit the Application */
    private void exitForm(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_exitForm
        System.exit(0);
    }//GEN-LAST:event_exitForm
    
    /**
     * Main method.
     * @param args the command line arguments (not used)
     */
    public static void main(String args[]) {
        new SpiderControl().show();
    }
 /**
  * Verifier listener routine used to report bad data
  *  @param message error message
  *  @param jComponent component that caused the error.
  */
    public void invalidData(String message, JComponent jComponent) {
        errorLabel.setText(message);
        errorLabel.setForeground(Color.red);
        startButton.setEnabled(false);  // turn off the start button
        getToolkit().beep();
    }
  /**
  * Verifier listener routine used to report good data
  *  @param jComponent component that has tested ok
  */  
    public void validData(JComponent jComponent) {
        errorLabel.setText("  ");
        startButton.setEnabled(true);  // turn on the start button
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JTabbedPane centerPane;
    private javax.swing.JButton clearMessageButton;
    private javax.swing.JTextField depthField;
    private javax.swing.JLabel depthLabel;
    private javax.swing.JLabel domainLabel;
    private javax.swing.JList domainList;
    private javax.swing.JScrollPane domainPane;
    private javax.swing.JLabel errorLabel;
    private javax.swing.JButton exitButton;
    private javax.swing.JPanel formTab;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextArea keywordArea;
    private javax.swing.JLabel keywordLabel;
    private javax.swing.JScrollPane keywordPane;
    private javax.swing.JTextArea messageArea;
    private javax.swing.JScrollPane messageTab;
    private javax.swing.JTextArea pageStatistics;
    private javax.swing.JTree searchTree;
    private javax.swing.JScrollPane searchTreePane;
    private javax.swing.JTextField siteField;
    private javax.swing.JLabel siteLabel;
    private javax.swing.JButton startButton;
    private javax.swing.JTextField startSiteField;
    private javax.swing.JLabel startingLabel;
    private javax.swing.JLabel statusLabel;
    private javax.swing.JButton stopButton;
    private javax.swing.JPanel toolBar;
    private javax.swing.JPanel treeTab;
    private javax.swing.JButton viewButton;
    // End of variables declaration//GEN-END:variables
    /** spider object */
    Spider spidey = null;
}