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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletResponse;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.sax.SAXResult;
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.MimeConstants;
/**
* 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 XSL-FO file to render
* </ul>
* or
* <ul>
* <li>xml: the path to an XML file to render</li>
* <li>xslt: the path to an XSLT file that can transform the above XML to XSL-FO</li>
* </ul>
* <br/>
* Example URL: http://servername/fop/servlet/FopPrintServlet?fo=readme.fo
* <br/>
* Example URL: http://servername/fop/servlet/FopPrintServlet?xml=data.xml&xsl=format.xsl
* <br/>
* <b>Note:</b> This servlet is derived from FopServlet. Most methods are inherited from the
* superclass. Only the differences to the base class are necessary.
*
* @author <a href="mailto:fop-dev@xmlgraphics.apache.org">Apache FOP Development Team</a>
* @version $Id$
*/
public class FopPrintServlet extends FopServlet {
/**
* {@inheritDoc}
*/
protected void render(Source src, Transformer transformer, HttpServletResponse response)
throws FOPException, TransformerException, IOException {
FOUserAgent foUserAgent = getFOUserAgent();
//Setup FOP
Fop fop = fopFactory.newFop(MimeConstants.MIME_FOP_PRINT, foUserAgent);
//Make sure the XSL transformation's result is piped through to FOP
Result res = new SAXResult(fop.getDefaultHandler());
//Start the transformation and rendering process
transformer.transform(src, res);
//Return the result
reportOK(response);
}
// private helper, tell (browser) user that file printed
private void reportOK(HttpServletResponse response) throws IOException {
String sMsg = "<html><title>Success</title>\n"
+ "<body><h1>FopPrintServlet: </h1>"
+ "<h3>The requested data was printed to the default printer.</h3></body></html>";
response.setContentType("text/html");
response.setContentLength(sMsg.length());
PrintWriter out = response.getWriter();
out.println(sMsg);
out.flush();
}
}
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