Use the Apache XML project FOP to generate a PDF file (below)
Fourth, content:
2, (2) xmlàxsl-foàpdf:
Sometimes we will encounter an XML file that you want to have only data, no format, and we need a JAXP-compatible XSLT processor: such as Apache's Xalan (or IBM Xerces, Sun) JDOM, etc.), add its library file to classpath. With JAXP's API, we can use XSLT to convert the XML file to the XML-FO file, and then convert the XML-FO file to PDF. The processing flow is as follows:
XLS-FO
FOP
Xml
Xslt
JAXP
(A) The first step let's take a look at how to convert the XML file into the XLS-FO file, the process process is as follows:
XLS-FO
Xml
Xslt
JAXP
// Example 2: ExampleXML2FO.JAVA
// java
Import java.io.file;
Import java.io.ioException;
Import java.io.outputstream;
// jaxp
Import javax.xml.transform.transformer;
Import javax.xml.transform.transformerfactory;
Import javax.xml.transform.transformerexception;
Import javax.xml.transform.source;
Import javax.xml.transform.result;
Import javax.xml.transform.Stream.streamResult;
Import javax.xml.transform.Stream.streamsource;
// Avalon
Import org.apache.avalon.framework.exceptionUtil;
/ **
* This class demonstrate the conversion of an xml file to an xsl-fo file
* Using JAXP (XSLT).
* /
Public class example examplexml2fo {
Public Void ConvertXML2FO (File XML, File XSLT, File Fo)
THROWS IOEXCEPTION, TRANSFORMEREXCEPTION {
// setup OUTPUT
OutputStream out = new java.io.fileoutputstream (fo);
Try {
// setup XSLT
TransformerFactory Factory = TransformerFactory.newinstance ();
Transformer Transformer = Factory.NewTransformer (New Streamsource (XSLT));
// setup input for xslt transport
Source src = new streamsource (XML);
// RESULTING SAX Events (The Generated Fo) Must Be Piped THROUGH To FOP
Result res = new streamResult (out);
// Start Xslt Transformation and Fop Processing
Transformer.Transform (SRC, RES);
} finally {out.close ();
}
}
Public static void main (String [] args) {
Try {
System.out.println ("FOP EXAMPLEXML2FO / N");
System.out.println ("preplay ...");
// setup Directories
FILE Basedir = New File (".");
// setup Input and Output Files
File XMLFile = New File (Basedir, "ProjectTeam.xml);
File Xsltfile = New File (Basedir, "Projectteam2fo.xsl");
File Fofile = New File (Basedir, "Resultxml2fo.fo");
System.out.println ("INPUT: XML (" XMLFile ")")
System.out.println ("Stylesheet:" xsltfile);
System.out.println ("OUTPUT: XSL-FO (" FOFILE ")")
System.out.println ();
System.out.println ("Transforming ...");
ExampleXML2FO App = New ExampleXML2FO ();
App.convertXML2FO (XMLFile, Xsltfile, FOFILE);
System.out.println ("Success!");
} catch (exception e) {
System.rr.println (ExceptionUtil.PrintStackTrace (e));
System.exit (-1);
}
}
}
Compilation The above program uses the XSLT file ProjectTeam2fo.xsl to convert the XML file ProjectTeam.xml into XML-FO files Resultxml2fo.fo.
(B) Further, let's take a look at how to convert the XML file into a PDF file.
The processing flow is as follows:
XLS-FO
FOP
Xml
Xslt
JAXP
// Example 3: ExampleXML2PDF.JAVA
// java
Import java.io.file;
Import java.io.ioException;
Import java.io.outputstream;
// jaxp
Import javax.xml.transform.transformer;
Import javax.xml.transform.transformerfactory;
Import javax.xml.transform.transformerexception;
Import javax.xml.transform.source;
Import javax.xml.transform.result;
Import javax.xml.transform.Stream.streamsource;
Import javax.xml.transform.sax.saxresult;
// Avalon
Import org.apache.avalon.framework.exceptionUtil;
Import org.apache.avaalon.framework.logger.consolelogger;
Import org.apache.avaalon.framework.logger.logger; // FOP
Import org.apache.fop.apps.driver;
Import org.apache.fop.apps.fopexception;
Import org.apache.fop.Messaging.MessageHandler;
/ **
* This class demonstrates the conversion of an xml file to pdf using
* JAXP (XSLT) and FOP (XSL: FO).
* /
Public class exampleXML2PDF {
Public Void ConvertXML2PDF (File XML, File XSLT, File PDF)
THROWS IOEXCEPTION, FOPEXCEPTION, TRANSFORMEREXCEPTION {
// Construct Driver
Driver driver = new driver ();
// setup logger
Logger logger = new consolelogger (consoleLogger.Level_INFO);
Driver.setLogger (Logger);
MessageHandler.SetScreenLogger (Logger);
// setup renderer (Output Format)
Driver.setrenderer (driver.render_pdf);
// setup OUTPUT
OutputStream out = new java.io.fileoutputstream (PDF);
Try {
Driver.setOutputStream (OUT);
// setup XSLT
TransformerFactory Factory = TransformerFactory.newinstance ();
Transformer Transformer = Factory.NewTransformer (New Streamsource (XSLT));
// setup input for xslt transport
Source src = new streamsource (XML);
// RESULTING SAX Events (The Generated Fo) Must Be Piped THROUGH To FOP
Result res = new saxResult (driver.getcontenthandler ());
// Start Xslt Transformation and Fop Processing
Transformer.Transform (SRC, RES);
} finally {
Out.close ();
}
}
Public static void main (String [] args) {
Try {
System.out.println ("FOP EXAMPLEXML2PDF / N");
System.out.println ("preplay ...");
// setup Directories
FILE Basedir = New File (".");
// setup Input and Output Files
File XMLFile = New File (Basedir, "ProjectTeam.xml);
File Xsltfile = New File (Basedir, "Projectteam2fo.xsl");
File pdffile = new file (basedir, "resultxml2pdf.pdf"); system.out.println ("Input: XML (" XMLFile ")")
System.out.println ("Stylesheet:" xsltfile);
System.out.println ("OUTPUT: PDF (" PDFFILE ")")
SYSTEM.OUT.PRINTLN ();
System.out.println ("Transforming ...");
ExampleXML2PDF App = New ExampleXML2PDF ();
App.convertXML2PDF (XMLFile, Xsltfile, PDFFile);
System.out.println ("Success!");
} catch (exception e) {
System.rr.println (ExceptionUtil.PrintStackTrace (e));
System.exit (-1);
}
}
}
Compile the above program to use the XSLT file ProjectTeam2fo.xsl to convert the XML file ProjectTeam.xml to PDF file Resultxml2pdf.pdf.
(3) javaàxmlàxsl-foàpdf:
This situation is interested in readers can refer to http://xml.apache.org/ about FOP.
Reference: http://xml.apache.org/
Author E-mail: jasea@sina.com
