i got a few problem..

[david505]

i want to extract html source.

so, i found some related post.

http://www.magpcss.org/ceforum/viewtopic.php?f=6&t=11909&p=21920&hilit=getsource#p21920

i try to revise example code and add some my code.

revised EXAMPLE CODE : MainFrame.java

Code: Select all


import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JTextField;

import org.cef.CefApp;
import org.cef.CefClient;
import org.cef.OS;
import org.cef.browser.CefBrowser;


public class MainFrame extends JFrame {
  private static final long serialVersionUID = -5570653778104813836L;
  private final JTextField address_;
  private final CefApp     cefApp_;
  private final CefClient  client_;
  private final CefBrowser browser_;
  private final Component  browerUI_;
  private static HtmlParser parser = new HtmlParser();
 

  private MainFrame(String startURL, boolean useOSR, boolean isTransparent) {

    cefApp_ = CefApp.getInstance();


    client_ = cefApp_.createClient();
   

    browser_ = client_.createBrowser(startURL, false, isTransparent);
   
    browser_.getSource(parser); <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< add
   
    browerUI_ = browser_.getUIComponent();
   
    address_ = new JTextField(startURL, 100);
    address_.addActionListener(new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent e) {
        
        browser_.loadURL(address_.getText());
        }
    });


    getContentPane().add(address_, BorderLayout.NORTH);
    getContentPane().add(browerUI_, BorderLayout.CENTER);
    pack();
    setSize(800,600);
    setVisible(true);
   

    addWindowListener(new WindowAdapter() {
      @Override
      public void windowClosing(WindowEvent e) {
        dispose();
       
        cefApp_.dispose();
      }
    });
  }

  public static void main(String[] args) {

    new MainFrame("http://www.google.com", OS.isLinux(), false);
   
   
  }
}


add some my code

Code: Select all

public class HtmlParser implements CefStringVisitor{

   @Override
   public void visit(String arg0) {

      System.out.println(arg0); <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< i want to see html code by console window.
      
   }

}

but, i can't see anything.

please help me

[kaiklimke]

Hi david505,

you're calling browser_.getSource(parser) too early in your code.
At this point in code, you've initialized the browser (by calling createBrowser) but there wasn't enough time to load any kind of HTTP content.
Therefore you have to wait until the browser has loaded its content.

It depends on what you want to do, but one idea is to add the "getSource(parser)" method call into an implementation of CefLoadHandler:

Code: Select all

    client_.addLoadHandler(new CefLoadHandlerAdapter() {
      @Override
      public void onLoadingStateChange(CefBrowser browser, boolean isLoading, boolean canGoBack, boolean canGoForward) {
        if (!isLoading)  {
          browser.getSource(parser); <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< just call it after the browser has finished loading its content.
        }
      }


Another (more complex example) can be found in the implementation of MainFrame (detailed):

• In tests.detailed.ui.MenuBar the menu entry "Get source..." is registered". If it is called, a new instance of ShowTextDialog is called and passed to browser_.getSource().
• The class tests.detailed.dialog.ShowTextDialog implements the interface CefStringVisitor and displays the text content within a JTextArea.

Regards,
Kai

[david505]

I feel a fool of myself... (ㅠㅡㅠ)

I understand your advice. and i try this

it was working. wow~!

I appreciate for your help.

Thanks a lot.