Admittedly I am not familiar with HTML to PDF (and fairly new to FOP) but just 
wondering if the java heap size is a factor at all with the memory issues? Can you 
please give more detail about your setup? What environment? Do you have a 
-Xmx<size> option anywhere? If so then is it possible to increase the heap size 
(unless I am on the wrong track of course).

Thanks.

-Mike

On 21/05/11 21:51, Kapil garg wrote:
ok I was able to find the jar 0.204 and run it successfully however it runs out 
of memory ..,
anyone be kind enough to share a working example within apache fop 1.0.0 to 
convert html to PDF?

Am I missing something here?

Kapil Garg




________________________________
From: gargka...@hotmail.com<mailto:gargka...@hotmail.com>
To: fop-...@xml.apache.org<mailto:fop-...@xml.apache.org>
Subject: HTML to PDF :NoSuchMEthod Erros on 
callingorg.apache.fop.fo.FOTreeBuilder in Driver class
Date: Sun, 22 May 2011 05:05:31 +1000


Hello Guys
Bit new on Apache FOP. I am trying to run a demo code to convert HTML into PDF. 
I am getting following exception on using fop 0.20.5 version
I could not find the driver class in fop 1.0.0 version.
IS there  a sample code that converts html into pdf in FOP 1.0.0 version. I 
need urgently some sort of HTML to PDF conversion library. Am I missing here? 
Would FOP work for HTML to PDF conversion? Any help would be appreciated.


Exception in thread "main" java.lang.NoSuchMethodError: 
org.apache.fop.fo.FOTreeBuilder: method <init>()V not found
at org.apache.fop.apps.Driver.<init>(Driver.java:221)
at org.apache.fop.apps.Driver.<init>(Driver.java:226)
at com.smartbin.smartbinpdf.Html2Pdf.fo2PDF(Html2Pdf.java:135)
at com.smartbin.smartbinpdf.Html2Pdf.main(Html2Pdf.java:61)

This is my code
package com.smartbin.smartbinpdf;
import java.io.FileInputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.ByteArrayOutputStream;
import java.util.logging.Level;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;

import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;

import org.w3c.tidy.Tidy;
import org.w3c.dom.Document;

import org.xml.sax.InputSource;

import org.apache.fop.apps.Driver;
import org.apache.fop.messaging.MessageHandler;
import org.apache.fop.tools.DocumentInputSource;

import org.apache.avalon.framework.logger.ConsoleLogger;
import org.apache.avalon.framework.logger.Logger;

/*
*  Class that converts HTML to PDF using
*  the DOM interfaces of JTidy, Xalan, and FOP.
*
*  @author Kapil Garg
*
*/
public class Html2Pdf {


   public static void main(String[] args) {
       FileInputStream input = null;
try {
           // open file
           //if (args.length != 2) {
           //   System.out.println("Usage: Html2Pdf htmlFile styleSheet");
           //  System.exit(1);
           //}
           //String htmlFileName = args[0];
           String htmlFileName = "C:/fop-1.0/examples/html2pdf/hello.html";
           //try {
  input = new FileInputStream(htmlFileName);
           Tidy tidy = new Tidy();
           //Document xmlDoc = tidy.parseDOM(input, null);
           Document xmlDoc = tidy.parseDOM(input, null) ;
           String stylesheet ="C:/fop-1.0/examples/html2pdf/xhtml2fo.xsl";
           Document foDoc = xml2FO(xmlDoc, stylesheet);
           String pdfFileName = htmlFileName.substring(0, htmlFileName.indexOf(".")) + 
".pdf";
           try {
               OutputStream pdf = new FileOutputStream(new File(pdfFileName));
               pdf.write(fo2PDF(foDoc));
           }
           catch (java.io.FileNotFoundException e) {
               System.out.println("Error creating PDF: " + pdfFileName);
           }
           catch (java.io.IOException e) {
               System.out.println("Error writing PDF: " + pdfFileName);
           }

}


       catch (FileNotFoundException ex) {
java.util.logging.Logger.getLogger(Html2Pdf.class.getName()).log(Level.SEVERE, 
null, ex);
} finally {
           try {
               input.close();
           } catch (IOException ex) {
               
java.util.logging.Logger.getLogger(Html2Pdf.class.getName()).log(Level.SEVERE, 
null, ex);
           }
       }

   }


   /*
    *  Applies stylesheet to input.
    *
    *  @param xml  The xml input Document
    *
    *  @param stylesheet Name of the stylesheet
    *
    *  @return Document  Result of the transform
    */
   private static Document xml2FO(Document xml, String styleSheet) {

DOMSource xmlDomSource = new DOMSource(xml);
     DOMResult domResult = new DOMResult();

Transformer transformer = getTransformer(styleSheet);
if (transformer == null) {
  System.out.println("Error creating transformer for " + styleSheet);
  System.exit(1);
}
try {
  transformer.transform(xmlDomSource, domResult);
}
catch (javax.xml.transform.TransformerException e) {
  return null;
}
return (Document) domResult.getNode();

   }


   /*
    *  Apply FOP to XSL-FO input
    *
    *  @param foDocument  The XSL-FO input
    *
    *  @return byte[]  PDF result
    */
   private static byte[] fo2PDF(Document foDocument) {

       DocumentInputSource fopInputSource = new DocumentInputSource(
                                                        foDocument);

       try {

           ByteArrayOutputStream out = new ByteArrayOutputStream();
           Logger log = new ConsoleLogger(ConsoleLogger.LEVEL_WARN);

           Driver driver = new Driver(fopInputSource, out);
           driver.setLogger(log);
           driver.setRenderer(Driver.RENDER_PDF);
           driver.run();

           return out.toByteArray();

       } catch (Exception ex) {
           return null;
       }
   }


   /*
    *  Create and return a Transformer for the specified stylesheet.
    *
    *  Based on the DOM2DOM.java example in the Xalan distribution.
    */
   private static Transformer getTransformer(String styleSheet) {

try {

  TransformerFactory tFactory = TransformerFactory.newInstance();

  DocumentBuilderFactory dFactory = DocumentBuilderFactory.newInstance();

  dFactory.setNamespaceAware(true);

  DocumentBuilder dBuilder = dFactory.newDocumentBuilder();
  Document xslDoc = dBuilder.parse(styleSheet);
  DOMSource xslDomSource = new DOMSource(xslDoc);

  return tFactory.newTransformer(xslDomSource);

}
catch (javax.xml.transform.TransformerException e) {
  e.printStackTrace();
  return null;
}
catch (java.io.IOException e) {
  e.printStackTrace();
  return null;
}
catch (javax.xml.parsers.ParserConfigurationException e) {
  e.printStackTrace();
  return null;
}
catch (org.xml.sax.SAXException e) {
  e.printStackTrace();
  return null;
}

   }

}



Kapil Garg






Michael Rubin


Developer


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