At 04:28 PM 1/29/02 +0100, you wrote:
>Is there anyone working with FOP who made experience with a serverside
>solution for printing the pdf-Files ?
>Is there a tool for that ?
Here is an example I submitted to this list about 2 weeks ago.
I have tested it w/ a servlet runner on Windows only.
' Best,
-Ralph LaChance
/*
* $Id: FopServlet.java,v 1.4 2001/09/25 08:32:58 keiron Exp $
* Copyright (C) 2002 The Apache Software Foundation. All rights reserved.
* For details on use and redistribution please refer to the
* LICENSE file included with these sources.
*/
import java.io.*;
import java.util.Vector ;
import java.awt.print.PrinterJob ;
import java.awt.print.PrinterException ;
import javax.servlet.*;
import javax.servlet.http.*;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
import org.apache.fop.apps.Driver;
import org.apache.fop.layout.Page;
import org.apache.fop.apps.Version;
import org.apache.fop.apps.XSLTInputHandler;
import org.apache.fop.render.awt.AWTRenderer ;
import org.apache.log.*;
/**
* Example servlet to generate a fop printout from a servlet.
* Printing goes to the default printer on host where the servlet executes.
* Servlet param is:
* <ul>
* <li>fo: the path to a formatting object file to render
* </ul>
*
* Example URL: http://servername/servlet/FopPrintServlet?fo=readme.fo
* Example URL: http://servername/servlet/FopPrintServlet?xml=data.xml&xsl=format.xsl
* Compiling: you will need
* - servlet_2_2.jar
* - fop.jar
* - sax api
* - logkit jar
*
* Running: you will need in the WEB-INF/lib/ directory:
* - fop.jar
* - batik.jar
* - avalon-framework-4.0.jar
* - logkit-1.0b4.jar
* - xalan-2.0.0.jar
*/
public class FopPrintServlet extends HttpServlet
{
public static final String FO_REQUEST_PARAM = "fo";
public static final String XML_REQUEST_PARAM = "xml";
public static final String XSL_REQUEST_PARAM = "xsl";
Logger log = null;
public void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException
{
if (log == null)
{
Hierarchy hierarchy = Hierarchy.getDefaultHierarchy();
log = hierarchy.getLoggerFor("fop");
log.setPriority(Priority.WARN);
}
try
{
String foParam = request.getParameter(FO_REQUEST_PARAM);
String xmlParam = request.getParameter(XML_REQUEST_PARAM);
String xslParam = request.getParameter(XSL_REQUEST_PARAM);
if (foParam != null)
{
FileInputStream file = new FileInputStream(foParam);
renderFO(new InputSource(file), response);
}
else if ((xmlParam != null) && (xslParam != null))
{
XSLTInputHandler input = new XSLTInputHandler(new File(xmlParam), new
File(xslParam));
renderXML(input, response);
}
else
{
response.setContentType ("text/html");
PrintWriter out = response.getWriter();
out.println("<html><title>Error</title>\n"+
"<body><h1>FopServlet Error</h1><h3>No 'fo' or 'xml/xsl' "+
"request param given.</h3></body></html>");
}
}
catch (ServletException ex)
{
throw ex;
}
catch (Exception ex)
{
throw new ServletException(ex);
}
}
/**
* renders an FO inputsource into a PDF file which is rendered
* directly to the response object's OutputStream
*/
public void renderFO(InputSource foFile, HttpServletResponse response)
throws ServletException
{
try
{
Driver driver = new Driver(foFile, null);
PrinterJob pj = PrinterJob.getPrinterJob();
PrintRenderer renderer = new PrintRenderer(pj);
driver.setLogger (log);
driver.setRenderer(renderer);
driver.run();
reportOK (response) ;
}
catch (Exception ex)
{
throw new ServletException(ex);
}
}
public void renderXML(XSLTInputHandler input, HttpServletResponse response)
throws ServletException
{
try
{
Driver driver = new Driver();
PrinterJob pj = PrinterJob.getPrinterJob();
PrintRenderer renderer = new PrintRenderer(pj);
pj.setCopies(1);
driver.setLogger (log);
driver.setRenderer (renderer);
driver.render (input.getParser(), input.getInputSource());
reportOK (response) ;
}
catch (Exception ex)
{
throw new ServletException(ex);
}
}
// private helper, tell (browser) user that file printed
private void reportOK (HttpServletResponse response)
throws ServletException
{
String sMsg = "<html><title>Success</title>\n" +
"<body><h1>FopPrintServlet: </h1>" +
"<h3>The requested data was printed</h3></body></html>" ;
response.setContentType ("text/html");
response.setContentLength (sMsg.length());
try
{
PrintWriter out = response.getWriter();
out.println (sMsg) ;
out.flush() ;
}
catch (Exception ex)
{
throw new ServletException(ex);
}
}
/**
* creates a SAX parser, using the value of org.xml.sax.parser
* defaulting to org.apache.xerces.parsers.SAXParser
*
* @return the created SAX parser
*/
static XMLReader createParser()
throws ServletException
{
String parserClassName = System.getProperty("org.xml.sax.parser");
if (parserClassName == null)
{
parserClassName = "org.apache.xerces.parsers.SAXParser";
}
try
{
return (XMLReader) Class.forName(parserClassName).newInstance();
}
catch (Exception e)
{
throw new ServletException(e);
}
}
// This is stolen from PrintStarter
class PrintRenderer extends AWTRenderer
{
private static final int EVEN_AND_ALL = 0;
private static final int EVEN = 1;
private static final int ODD = 2;
private int startNumber;
private int endNumber;
private int mode = EVEN_AND_ALL;
private int copies = 1;
private PrinterJob printerJob;
PrintRenderer(PrinterJob printerJob)
{
super(null);
this.printerJob = printerJob;
startNumber = 0 ;
endNumber = -1;
printerJob.setPageable(this);
mode = EVEN_AND_ALL;
String str = System.getProperty("even");
if (str != null)
{
try
{
mode = Boolean.valueOf(str).booleanValue() ? EVEN : ODD;
}
catch (Exception e)
{}
}
}
public void stopRenderer(OutputStream outputStream)
throws IOException {
super.stopRenderer(outputStream);
if(endNumber == -1)
endNumber = getPageCount();
Vector numbers = getInvalidPageNumbers();
for (int i = numbers.size() - 1; i > -1; i--)
removePage(Integer.parseInt((String)numbers.elementAt(i)));
try {
printerJob.print();
} catch (PrinterException e) {
e.printStackTrace();
throw new IOException(
"Unable to print: " + e.getClass().getName() +
": " + e.getMessage());
}
}
public void renderPage(Page page) {
pageWidth = (int)((float)page.getWidth() / 1000f);
pageHeight = (int)((float)page.getHeight() / 1000f);
super.renderPage(page);
}
private Vector getInvalidPageNumbers() {
Vector vec = new Vector();
int max = getPageCount();
boolean isValid;
for (int i = 0; i < max; i++) {
isValid = true;
if (i < startNumber || i > endNumber) {
isValid = false;
} else if (mode != EVEN_AND_ALL) {
if (mode == EVEN && ((i + 1) % 2 != 0))
isValid = false;
else if (mode == ODD && ((i + 1) % 2 != 1))
isValid = false;
}
if (!isValid)
vec.add(i + "");
}
return vec;
}
} // class PrintRenderer
}
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