Example usage for org.apache.pdfbox.pdmodel PDPage getContentStreams

Introduction

In this page you can find the example usage for org.apache.pdfbox.pdmodel PDPage getContentStreams.

Prototype

public Iterator<PDStream> getContentStreams() 

Source Link

Document

Returns the content streams which make up this page.

Usage

From source file:at.gv.egiz.pdfas.lib.impl.pdfbox2.placeholder.SignaturePlaceholderExtractor.java

License:EUPL

/**
 * Search the document for placeholder images and possibly included
 * additional info.<br/>//from   w w w  .  java  2s .  c o m
 * Searches only for the first placeholder page after page from top.
 *
 * @param inputStream
 * @return all available info from the first found placeholder.
 * @throws PDFDocumentException
 *             if the document could not be read.
 * @throws PlaceholderExtractionException
 *             if STRICT matching mode was requested and no suitable
 *             placeholder could be found.
 */
public static SignaturePlaceholderData extract(PDDocument doc, String placeholderId, int matchMode)
        throws PdfAsException {
    SignaturePlaceholderContext.setSignaturePlaceholderData(null);

    SignaturePlaceholderExtractor extractor;
    try {
        extractor = new SignaturePlaceholderExtractor(placeholderId, matchMode, doc);
    } catch (IOException | ClassNotFoundException | InstantiationException | IllegalAccessException e2) {
        throw new PDFIOException("error.pdf.io.04", e2);
    }

    int pageNr = 0;
    for (PDPage page : doc.getPages()) {
        pageNr++;

        try {
            extractor.setCurrentPage(pageNr);
            if (page.getContents() != null && page.getResources() != null && page.getContentStreams() != null) {
                extractor.processPage(page); //TODO: pdfbox2 - right?

            }
            SignaturePlaceholderData ret = matchPlaceholderPage(extractor.placeholders, placeholderId,
                    matchMode);
            if (ret != null) {
                SignaturePlaceholderContext.setSignaturePlaceholderData(ret);
                return ret;
            }
        } catch (IOException e1) {
            throw new PDFIOException("error.pdf.io.04", e1);
        } catch (Throwable e) {
            throw new PDFIOException("error.pdf.io.04", e);
        }
    }
    if (extractor.placeholders.size() > 0) {
        SignaturePlaceholderData ret = matchPlaceholderDocument(extractor.placeholders, placeholderId,
                matchMode);
        SignaturePlaceholderContext.setSignaturePlaceholderData(ret);
        return ret;
    }
    // no placeholders found, apply strict mode if set
    if (matchMode == PLACEHOLDER_MATCH_MODE_STRICT) {
        throw new PlaceholderExtractionException("error.pdf.stamp.09");
    }

    return null;
}

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