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Open Source API for HTML,RTF formats

Posted on 2004-04-05
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Last Modified: 2012-06-21
Hi all,

Can any body provide me links to open source API that parses RTF to text and HTML to  text

thanks
Sudhakar
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Question by:sudhakar_koundinya
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Expert Comment

by:mmuruganandam
ID: 10763245
Check Apache POI

You can find that at http://www.apache.org/dyn/closer.cgi/jakarta/poi/



Regards,
Muruga
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Author Comment

by:sudhakar_koundinya
ID: 10763247
Hi

POI doesn't support RTF formats. It supports OLE Documents

Thanks to helping me
Sudha
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Expert Comment

by:objects
ID: 10763251
Java comes with parsers already in HTMLEditorKit and RTFEditorKit.
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Author Comment

by:sudhakar_koundinya
ID: 10763255
I tried with them

I have failed to parse the text. Can I have sample examples

Thanks
Sudha
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Expert Comment

by:Tommy Braas
ID: 10763257
StringTokenizer strtok = new StringTokenizer(inputString);
StringBuffer text = new StringBuffer();
while (strtok.hasMoreTokens()) {
   strtok.nextToken(">");
   text.append(strtok.nextToken("<"));
}
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by:Tommy Braas
ID: 10763258
Short and sweet! :-)
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by:Mayank S
ID: 10763269
By the way, I guess that RTFs can be directly read using readers/ writers.

There are several sub-versions for the RTF standard. Probably the RTFs created with Word don't work, otherwise you should be able to read/ write with RTFs directly.

Or else, you can try these:

http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/text/rtf/RTFEditorKit.html

http://api.openoffice.org
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Accepted Solution

by:
objects earned 50 total points
ID: 10763272
   public static String getText(String uriStr) {
        final StringBuffer buf = new StringBuffer(1000);
   
        try {
            // Create an HTML document that appends all text to buf
            HTMLDocument doc = new HTMLDocument() {
                public HTMLEditorKit.ParserCallback getReader(int pos) {
                    return new HTMLEditorKit.ParserCallback() {
                        // This method is whenever text is encountered in the HTML file
                        public void handleText(char[] data, int pos) {
                            buf.append(data);
                            buf.append('\n');
                        }
                    };
                }
            };
   
            // Create a reader on the HTML content
            URL url = new URI(uriStr).toURL();
            URLConnection conn = url.openConnection();
            Reader rd = new InputStreamReader(conn.getInputStream());
   
            // Parse the HTML
            EditorKit kit = new HTMLEditorKit();
            kit.read(rd, doc, 0);
        } catch (MalformedURLException e) {
        } catch (URISyntaxException e) {
        } catch (BadLocationException e) {
        } catch (IOException e) {
        }
   
        // Return the text
        return buf.toString();
    }
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Expert Comment

by:Mayank S
ID: 10763275
>> directly read using readers/ writers

= directly read/ written using readers/ writers
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Author Comment

by:sudhakar_koundinya
ID: 10763520
And i am to parse the RTF document also

here is the code

import javax.swing.text.rtf.RTFEditorKit;
import javax.swing.text.*;
import java.io.*;
class RTF2Text
{
      public static void main(String[] args) throws Exception
      {
            System.out.println(getText(args[0]));
      }
      public static String getText(String file) throws Exception
      {
            FileInputStream stream = new FileInputStream(file);
            RTFEditorKit kit = new RTFEditorKit();
            javax.swing.text.Document doc = kit.createDefaultDocument();
            kit.read(stream, doc, 0);

            String plainText = doc.getText(0, doc.getLength());
            return plainText;



      }
}


Thanks to all of the guys. Especially objects.

Thanks One And All

Sudhakar
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Expert Comment

by:objects
ID: 10763536
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Expert Comment

by:Venkic
ID: 11157303
Hi guys:

I tried the code posted by as shown below.

 public static String getText(String uriStr) {
        final StringBuffer buf = new StringBuffer(1000);
   
        try {
            // Create an HTML document that appends all text to buf
            HTMLDocument doc = new HTMLDocument() {
                public HTMLEditorKit.ParserCallback getReader(int pos) {
                    return new HTMLEditorKit.ParserCallback() {
                        // This method is whenever text is encountered in the HTML file
                        public void handleText(char[] data, int pos) {
                            buf.append(data);
                            buf.append('\n');
                        }
                    };
                }
            };
   
            // Create a reader on the HTML content
            URL url = new URI(uriStr).toURL();
            URLConnection conn = url.openConnection();
            Reader rd = new InputStreamReader(conn.getInputStream());
   
            // Parse the HTML
            EditorKit kit = new HTMLEditorKit();
            kit.read(rd, doc, 0);
        } catch (MalformedURLException e) {
        } catch (URISyntaxException e) {
        } catch (BadLocationException e) {
        } catch (IOException e) {
        }
   
        // Return the text
        return buf.toString();
    }


The above code does not work for some reason. The callback to handleText( ) method is somehow not being called by the HTMLEditor. Does anyone know of another way or some better way to parse an HTML file and get ONLY the TEXT WITHOUT any HTML-TAGS ?

Your helps is very much appreciated.
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by:Mayank S
ID: 11162264
Ask your own problems in your own question-pages. Don't disturb questions which are already closed. You get your question-points only for that purpose. Don't try to save them this way. Use them correctly.
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