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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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package org.ofbiz.example;
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;
import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.GeneralException;
import org.ofbiz.service.DispatchContext;
import org.ofbiz.service.ServiceUtil;
import org.ofbiz.webapp.view.ApacheFopFactory;
import org.ofbiz.widget.html.HtmlScreenRenderer;
import org.ofbiz.widget.screen.ScreenRenderer;
import org.xml.sax.SAXException;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Map;
import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintException;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.SimpleDoc;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.Copies;
import javax.print.attribute.standard.Sides;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.stream.StreamSource;
public class ExamplePrintServices {
public static final String module = ExamplePrintServices.class.getName();
private static HtmlScreenRenderer htmlScreenRenderer = new HtmlScreenRenderer();
public static Map printReportPdf(DispatchContext dctx, Map context) {
String screenLocation = "component://example/widget/example/ExampleReportScreens.xml";
String reportScreenName = "ExampleReport";
// render a screen to get the XML document
Writer reportWriter = new StringWriter();
ScreenRenderer reportScreenRenderer = new ScreenRenderer(reportWriter, null, htmlScreenRenderer);
reportScreenRenderer.populateContextForService(dctx, context);
// put the exampleId in the screen context, is a parameter coming into the service
//reportScreenRenderer.getContext().put("exampleId", context.get("exampleId"));
try {
reportScreenRenderer.render(screenLocation, reportScreenName);
} catch (GeneralException e) {
String errMsg = "General error rendering screen [" + screenLocation + "]: " + e.toString();
Debug.logError(e, errMsg, module);
return ServiceUtil.returnError(errMsg);
} catch (IOException e) {
String errMsg = "IO error rendering screen [" + screenLocation + "]: " + e.toString();
Debug.logError(e, errMsg, module);
return ServiceUtil.returnError(errMsg);
} catch (SAXException e) {
String errMsg = "SAX (XML parse) error rendering screen [" + screenLocation + "]: " + e.toString();
Debug.logError(e, errMsg, module);
return ServiceUtil.returnError(errMsg);
} catch (ParserConfigurationException e) {
String errMsg = "Parser configuration error rendering screen [" + screenLocation + "]: " + e.toString();
Debug.logError(e, errMsg, module);
return ServiceUtil.returnError(errMsg);
}
String reportXmlDocument = reportWriter.toString();
// create the in/output stream for the generation
ByteArrayOutputStream out = new ByteArrayOutputStream();
FopFactory fopFactory;
try {
fopFactory = ApacheFopFactory.instance();
Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, out);
TransformerFactory transFactory = TransformerFactory.newInstance();
Transformer transformer = transFactory.newTransformer();
// set the input source (XSL-FO) and generate the PDF
Reader reader = new StringReader(reportXmlDocument);
Source src = new StreamSource(reader);
// load the FOP driver
// Get handler that is used in the generation process
Result res = new SAXResult(fop.getDefaultHandler());
// read the XSL-FO XML into the W3 Document
// Start XSLT transformation and FOP processing
transformer.transform(src, res);
// and generate the PDF
// We don't want to cache the images that get loaded by the FOP engine
fopFactory.getImageFactory().clearCaches();
} catch (FOPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransformerConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransformerFactoryConfigurationError e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransformerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
/*
// set the content type and length
response.setContentType("application/pdf");
response.setContentLength(out.size());
// write to the browser
try {
out.writeTo(response.getOutputStream());
response.getOutputStream().flush();
} catch (IOException e) {
throw new ViewHandlerException("Unable write to browser OutputStream", e);
}
*/
DocFlavor docFlavor = DocFlavor.BYTE_ARRAY.PDF;
Doc myDoc = new SimpleDoc(out.toByteArray(), docFlavor, null);
PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
aset.add(new Copies(1));
//aset.add(MediaSize.A4);
aset.add(Sides.ONE_SIDED);
PrintService[] services = PrintServiceLookup.lookupPrintServices(docFlavor, aset);
if (services.length > 0) {
DocPrintJob job = services[0].createPrintJob();
try {
job.print(myDoc, aset);
} catch (PrintException pe) {
String errMsg = "Unable to print PDF from XSL-FO: " + pe.toString();
Debug.logError(pe, errMsg, module);
return ServiceUtil.returnError(errMsg);
}
}
return ServiceUtil.returnSuccess();
}
}