Hello GuysBit 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 versionI 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 codepackage 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
