/* * $Id: FopPrintServlet.java,v 1.1.2.2 2003/02/25 16:06:45 jeremias Exp $ * ============================================================================ * The Apache Software License, Version 1.1 * ============================================================================ * * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- * tion, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3. The end-user documentation included with the redistribution, if any, must * include the following acknowledgment: "This product includes software * developed by the Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, if * and wherever such third-party acknowledgments normally appear. * * 4. The names "FOP" and "Apache Software Foundation" must not be used to * endorse or promote products derived from this software without prior * written permission. For written permission, please contact * apache@apache.org. * * 5. Products derived from this software may not be called "Apache", nor may * "Apache" appear in their name, without prior written permission of the * Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU- * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ============================================================================ * * This software consists of voluntary contributions made by many individuals * on behalf of the Apache Software Foundation and was originally created by * James Tauber . For more information on the Apache * Software Foundation, please see . */ 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.apache.fop.apps.Driver; import org.apache.fop.layout.Page; import org.apache.fop.apps.XSLTInputHandler; import org.apache.fop.messaging.MessageHandler; import org.apache.fop.render.awt.AWTRenderer ; import org.apache.avalon.framework.logger.ConsoleLogger; import org.apache.avalon.framework.logger.Logger; /** * 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: * * * Example URL: http://servername/fop/servlet/FopPrintServlet?fo=readme.fo * Example URL: http://servername/fop/servlet/FopPrintServlet?xml=data.xml&xsl=format.xsl * Compiling: you will need * - servlet_2_2.jar * - fop.jar * - sax api * - avalon-framework-x.jar (where x is the version found the FOP lib dir) * * Running: you will need in the WEB-INF/lib/ directory: * - fop.jar * - batik.jar * - avalon-framework-x.jar (where x is the version found the FOP lib dir) * - 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) { log = new ConsoleLogger(ConsoleLogger.LEVEL_WARN); MessageHandler.setScreenLogger(log); } 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("Error\n"+ "

FopServlet Error

No 'fo' or 'xml/xsl' "+ "request param given.

"); } } catch (ServletException ex) { throw ex; } catch (Exception ex) { throw new ServletException(ex); } } /** * Renders an FO inputsource to the default printer. */ 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); } } /** * Renders an FO generated using an XML and a stylesheet to the default printer. */ 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 = "Success\n" + "

FopPrintServlet:

" + "

The requested data was printed

" ; 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); } } // 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 }