PDF of XML data using JDOM (1)
Three ways to handle XML data We have already introduced,
(Directly read http://www.9cbs.net/develop/read_article.asp?id=20720
And using xslt http://www.9cbs.net/develop/read_article.asp?id=20733) Now let's take a look at the third mode to convert operations to binary formats (generally PDF). This operation is done with the HTTP: //xml.apache.org/ of the package FOP. In fact, this is what I sorted out, not written by :) Its code is as follows:
Package XML;
Import java.io. *;
Import org.xml.sax.inputsource;
Import org.xml.sax.xmlreader;
Import org.apache.fop.apps.driver;
Import org.apache.fop.apps.version;
Import javax.xml.transform. *;
Import javax.xml.transform.stream. *;
/ **
* Class to Convert An XML Document To PDF VIA
* Xslt and xsl formatting objects.
* /
Public class pdfwriter {
Protected Transformer Transformer = NULL;
Public pdfwriter () {};
Public pdfwriter (streamsource Source) throws transformerconfigurationException {
// try {
TransformerFactory Factory = TransformerFactory.newinstance ();
Transformer = factory.newtransformer (SOURCE);
/ *} Catch (TransformerConfigurationException TCE) {
Throw New IllegalStateException ("Stylesheet CompiLation Problem: Tce.getMessage ());
} catch (TransformerFactoryConfigurationException TFCE) {
Throw New ILLEGALSTATEEXCEPTION ("JAXP Configuration Problem: Tce.getMessage ());
}
* /
}
Public Pdfwriter (String XslFilePath)
Throws TransformerConfigurationException, FileNotFoundException {
NEW StreamSource (New FileInputStream (XslFilePath));
}
/ ** Invoke the asf FOP ENGINE to CREATE THE PDF * /
Protected byte [] invokefop (InputSource Fosource) throws exception {
ByteArrayoutputstream out = new byteArrayoutputStream ();
Driver Driver = New Driver (Fosource, OUT);
Driver.run ();
Return out.tobytearray ();
/ ** CREATE A PDF from an Xml File, Using The Stylesheet Passed to the Constructor. * /
Public Byte [] generatepdf (string xmlfilepath) throws exception {
StreetSource Xmlsource = New StreamSource (New FileInputStream (XMLFilePath));
Return generatepdf (xmlsource);
}
/ ** Does the intencement stuff * /
Public Byte [] generatepdf (streamsource xmlsource) throws exception {
BYTEARRAYOUTPUTSTREAM baos = new byteArrayoutputStream ();
StreamResult Foresult = New StreamResult (baos);
Transformer.Transform (Xmlsource, Foresult);
BYTEARRAYINPUTSTREAM bais = new byteArrayInputStream (baos.tobytearray ());
Return INVOKEFOP (New InputSource (bais));
}
/ ** to be used with files * /
Public static void createpdffromxml (String Xslfilepath, String outputpdfpath) throws exception {
FileOutputStream Fos = New FileOutputStream (Outputpdfpath);
CreatepdffRomXML (XslfilePath, New FileInputStream (XMLFilePath), FOS);
Fos.close ();
}
/ ** to be caled when it is no spoon (xml or pdf file) * /
Public static void createpdffromxml (String XslFilepath, InputStream Xmlin, OutputStream Pdfout) throws exception {
Pdfwriter Writer = New Pdfwriter;
Byte [] pdfbytes = Writer.Generate (XMLIN));
Pdfout.write (pdfbytes, 0, pdfbytes.length);
}
Public static void main (String [] args) {
String filebasepath = "." File.separator;
String XmlFilePath = filebasepath "watchlist.xml";
String xslfilepath = filebasepath "watchlist2pdf.xsl";
String outputpdfpath = filebasepath "watchlist.pdf";
Try {
Pdfwriter.createpdffromxml (Xslfilepath, XMLFilePath, Outputpdfpath);
} catch (exception e) {system.out.println (E.getMessage ());
E.PrintStackTrace ();
}
}
}
This JavaBean enters the location of the XSL-FO file, an XML file location, outputs a PDF file.
