Hello,Attached, you'll find a sample java code which creates a PDF/A-1b file using CreatePDFA sample [1], and then immediately tries to validate it using Preflight as described in Cookbook [2]
The validation fails with the following error: --8<---------------- The file/tmp/test.pdf is not valid, error(s) : 7.1 : Error on MetaData, xmp should start with a processing instruction -->8----------------I'm using PDFBox to generates PDF/A files which are validated by an application which obviously uses PDFBox for validation, and my PDF files are rejected for the moment, with the same error.
Could you please tell me what's missing in CreatePDFA sample to make it pass the validation?
Kind Regards, Julien.[1] http://svn.apache.org/viewvc/pdfbox/branches/1.8/examples/src/main/java/org/apache/pdfbox/examples/pdfa/CreatePDFA.java?revision=1620380&view=markup
[2] http://pdfbox.apache.org/1.8/cookbook/pdfavalidation.html
/* * 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. */ import java.io.ByteArrayOutputStream; import java.io.InputStream; import javax.activation.FileDataSource; import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDDocumentCatalog; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.common.PDMetadata; import org.apache.pdfbox.pdmodel.edit.PDPageContentStream; import org.apache.pdfbox.pdmodel.font.PDFont; import org.apache.pdfbox.pdmodel.font.PDTrueTypeFont; import org.apache.pdfbox.pdmodel.graphics.color.PDOutputIntent; import org.apache.pdfbox.preflight.PreflightDocument; import org.apache.pdfbox.preflight.ValidationResult; import org.apache.pdfbox.preflight.exception.SyntaxValidationException; import org.apache.pdfbox.preflight.parser.PreflightParser; import org.apache.xmpbox.XMPMetadata; import org.apache.xmpbox.schema.PDFAIdentificationSchema; import org.apache.xmpbox.type.BadFieldValueException; import org.apache.xmpbox.xml.XmpSerializationException; import org.apache.xmpbox.xml.XmpSerializer; /** * This is an example that creates a simple PDF/A document. * */ public class CreateAndCheckPDFA { /** * Constructor. */ public CreateAndCheckPDFA() { super(); } /** * Create a simple PDF/A document. * * This example is based on HelloWorld example. * * As it is a simple case, to conform the PDF/A norm, are added : - the font used in the document - a light xmp * block with only PDF identification schema (the only mandatory) - an output intent * * @param file The file to write the PDF to. * @param message The message to write in the file. * * @throws Exception If something bad occurs */ public void doIt(String file, String message) throws Exception { // the document PDDocument doc = null; try { doc = new PDDocument(); PDPage page = new PDPage(); doc.addPage(page); // load the font from pdfbox.jar InputStream fontStream = CreateAndCheckPDFA.class.getResourceAsStream("/org/apache/pdfbox/resources/ttf/ArialMT.ttf"); PDFont font = PDTrueTypeFont.loadTTF(doc, fontStream); // create a page with the message where needed PDPageContentStream contentStream = new PDPageContentStream(doc, page); contentStream.beginText(); contentStream.setFont(font, 12); contentStream.moveTextPositionByAmount(100, 700); contentStream.drawString(message); contentStream.endText(); contentStream.saveGraphicsState(); contentStream.close(); PDDocumentCatalog cat = doc.getDocumentCatalog(); PDMetadata metadata = new PDMetadata(doc); cat.setMetadata(metadata); XMPMetadata xmp = XMPMetadata.createXMPMetadata(); try { PDFAIdentificationSchema pdfaid = xmp.createAndAddPFAIdentificationSchema(); pdfaid.setConformance("B"); pdfaid.setPart(1); pdfaid.setAboutAsSimple("PDFBox PDFA sample"); XmpSerializer serializer = new XmpSerializer(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); serializer.serialize(xmp, baos, false); metadata.importXMPMetadata(baos.toByteArray()); } catch (BadFieldValueException badFieldexception) { // can't happen here, as the provided value is valid } catch (XmpSerializationException xmpException) { System.err.println(xmpException.getMessage()); } InputStream colorProfile = CreateAndCheckPDFA.class.getResourceAsStream("/sRGB Color Space Profile.icm"); // create output intent PDOutputIntent oi = new PDOutputIntent(doc, colorProfile); oi.setInfo("sRGB IEC61966-2.1"); oi.setOutputCondition("sRGB IEC61966-2.1"); oi.setOutputConditionIdentifier("sRGB IEC61966-2.1"); oi.setRegistryName("http://www.color.org";); cat.addOutputIntent(oi); doc.save(file); } finally { if (doc != null) { doc.close(); } } } /** * This will create a hello world PDF/A document. * <br /> * see usage() for commandline * * @param args Command line arguments. */ public static void main(String[] args) { CreateAndCheckPDFA app = new CreateAndCheckPDFA(); try { String filePath = "/tmp/test.pdf"; app.doIt(filePath, "Hello, world"); // Check. See http://pdfbox.apache.org/1.8/cookbook/pdfavalidation.html ValidationResult result = null; FileDataSource fd = new FileDataSource(filePath); PreflightParser parser = new PreflightParser(fd); try { parser.parse(); PreflightDocument document = parser.getPreflightDocument(); document.validate(); result = document.getResult(); document.close(); } catch (SyntaxValidationException e) { /* the parse method can throw a SyntaxValidationException * if the PDF file can't be parsed. * In this case, the exception contains an instance of ValidationResult */ result = e.getResult(); } // display validation result if (result.isValid()) { System.out.println("The file " + filePath+ " is a valid PDF/A-1b file"); } else { System.out.println("The file" + filePath + " is not valid, error(s) :"); for (ValidationResult.ValidationError error : result.getErrorsList()) { System.out.println(error.getErrorCode() + " : " + error.getDetails()); } } } catch (Exception e) { e.printStackTrace(); } } /** * This will print out a message telling how to use this example. */ private void usage() { System.err.println("usage: " + this.getClass().getName() + " <output-file> <Message>"); } }
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