Example usage for org.apache.pdfbox.cos COSStream COSStream

Introduction

In this page you can find the example usage for org.apache.pdfbox.cos COSStream COSStream.

Prototype

public COSStream() 

Source Link

Document

Creates a new stream with an empty dictionary.

Usage

From source file:io.github.qwefgh90.akka.pdf.PDFUtilWrapper.java

License:Apache License

public static InputStream merge(final List<InputStream> sources, String _title, String _creator,
        String _subject) throws IOException {
    String title = _title == null ? "" : _title;
    String creator = _creator == null ? "" : _creator;
    String subject = _subject == null ? "" : _subject;

    ByteArrayOutputStream mergedPDFOutputStream = null;
    COSStream cosStream = null;/*from w  ww  .j av  a2s.  c o  m*/
    try {
        // If you're merging in a servlet, you can modify this example to use the outputStream only
        // as the response as shown here: http://stackoverflow.com/a/36894346/535646
        mergedPDFOutputStream = new ByteArrayOutputStream();
        cosStream = new COSStream();

        PDFMergerUtility pdfMerger = createPDFMergerUtility(sources, mergedPDFOutputStream);

        // PDF and XMP properties must be identical, otherwise document is not PDF/A compliant
        PDDocumentInformation pdfDocumentInfo = createPDFDocumentInfo(title, creator, subject);
        PDMetadata xmpMetadata = createXMPMetadata(cosStream, title, creator, subject);
        pdfMerger.setDestinationDocumentInformation(pdfDocumentInfo);
        pdfMerger.setDestinationMetadata(xmpMetadata);

        LOG.info("Merging " + sources.size() + " source documents into one PDF");
        pdfMerger.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());
        LOG.info("PDF merge successful, size = {" + mergedPDFOutputStream.size() + "} bytes");

        return new ByteArrayInputStream(mergedPDFOutputStream.toByteArray());
    } catch (BadFieldValueException e) {
        throw new IOException("PDF merge problem", e);
    } catch (TransformerException e) {
        throw new IOException("PDF merge problem", e);
    } finally {
        for (InputStream source : sources) {
            IOUtils.closeQuietly(source);
        }
        IOUtils.closeQuietly(cosStream);
        IOUtils.closeQuietly(mergedPDFOutputStream);
    }
}

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From source file:org.apache.fop.render.pdf.pdfbox.PDFBoxAdapter.java

License:Apache License

private PDStream getContents(PDPage page) throws IOException {
    PDStream pdStream = new PDStream(new COSStream());
    OutputStream os = pdStream.createOutputStream();
    IOUtils.copy(page.getContents(), os);
    os.close();//from w  ww. ja  v  a 2s.co m
    return pdStream;
}

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From source file:us.kagome.pdfbox.PDFMergerExample.java

License:Apache License

/**
 * Creates a compound PDF document from a list of input documents.
 * <p>//  w ww  . j av  a2s. c o m
 * The merged document is PDF/A-1b compliant, provided the source documents are as well. It
 * contains document properties title, creator and subject, currently hard-coded.
 *
 * @param sources list of source PDF document streams.
 * @return compound PDF document as a readable input stream.
 * @throws IOException if anything goes wrong during PDF merge.
 */
public InputStream merge(final List<InputStream> sources) throws IOException {
    String title = "My title";
    String creator = "Alexander Kriegisch";
    String subject = "Subject with umlauts ";

    ByteArrayOutputStream mergedPDFOutputStream = null;
    COSStream cosStream = null;
    try {
        // If you're merging in a servlet, you can modify this example to use the outputStream only
        // as the response as shown here: http://stackoverflow.com/a/36894346/535646
        mergedPDFOutputStream = new ByteArrayOutputStream();
        cosStream = new COSStream();

        PDFMergerUtility pdfMerger = createPDFMergerUtility(sources, mergedPDFOutputStream);

        // PDF and XMP properties must be identical, otherwise document is not PDF/A compliant
        PDDocumentInformation pdfDocumentInfo = createPDFDocumentInfo(title, creator, subject);
        PDMetadata xmpMetadata = createXMPMetadata(cosStream, title, creator, subject);
        //            pdfMerger.setDestinationDocumentInformation(pdfDocumentInfo);
        //            pdfMerger.setDestinationMetadata(xmpMetadata);

        LOG.info("Merging " + sources.size() + " source documents into one PDF");
        pdfMerger.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());
        LOG.info("PDF merge successful, size = {" + mergedPDFOutputStream.size() + "} bytes");

        return new ByteArrayInputStream(mergedPDFOutputStream.toByteArray());
    } catch (Exception e) {
        throw new IOException("PDF merge problem", e);
    } finally {
        for (InputStream source : sources) {
            IOUtils.closeQuietly(source);
        }
        IOUtils.closeQuietly(cosStream);
        IOUtils.closeQuietly(mergedPDFOutputStream);
    }
}

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