use of javax.swing.text.html

newbieal · #1 (**permalink**) 10-07-2008, 11:55 PM

I've the following code. What I'm trying to accomplish is update text within the <head> tag of any given html document. Can someone please help and give me an idea what the code needs to look like so that the html document is actually updated?

Code:

import java.io.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
import javax.swing.text.ElementIterator;
 
class testingWriteToHTML {
  public static void main(String[] args) {
    EditorKit kit = new HTMLEditorKit();
    Document doc = kit.createDefaultDocument();
 
    // The Document class does not yet
    // handle charset's properly.
    doc.putProperty("IgnoreCharsetDirective", Boolean.TRUE);
     String fn = null;      
    try {
      // Create a reader on the HTML content.
      fn = System.getProperty("user.dir") + System.getProperty("file.separator") + "testingHTML.html";
       BufferedReader reader    = new BufferedReader(new FileReader(fn));
    
     
       // Parse the HTML.
      kit.read(reader, doc, 0);
 
      // Iterate through the elements
      // of the HTML document.
      ElementIterator it = new ElementIterator(doc);
      javax.swing.text.Element elem;
      while ((elem = it.next()) != null) {
           // System.out.print( "Attributes name = " + elem.getAttributes());
           if ( elem.getParentElement() != null)
           {
//                 System.out.println( elem.getStartOffset() + " " + elem.getEndOffset() + " Element = " + elem.getName() + " Parent " + elem.getParentElement().getName());
           if(elem.getName() == "head")
           {
                doc.insertString(0, "TESTING", null);   
      
            System.out.println( " Element = " + elem.getName() + " " + doc.getText( elem.getStartOffset(), elem.getEndOffset()-elem.getStartOffset()));
            
           }
           }
           
           
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    System.exit(0);
  }
}

Norm · #2 (**permalink**) 10-08-2008, 01:43 AM

Quote:

html document is actually updated

Where are the output statements that write the results to the file?
There are several code examples on this site that write to files.
Use the Search

Add the following to your code to see what is output:
// Now output the doc
BufferedWriter bw = new BufferedWriter(new FileWriter(outFN));
kit.write(bw, doc, 0, doc.getLength());
bw.close();

I tried this on an HTML file and found that the output was missing some text that was in the input file. >>> Don't recommend this as a way to EDIT an HTML file. It looses text!!

newbieal · #3 (**permalink**) 10-09-2008, 08:17 PM

I appreciate the feedback. In the meanwhile I read up on java dom a little bit and have decided to switch to it to update html docs. However, the code is not working yet. Is this something you could help me with, or should I create a new post for it?

CJSLMAN · #4 (**permalink**) 10-09-2008, 08:45 PM

I would suggest opening a new post, since the topic is different.