Java IOUtils类代码示例

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
/**
 * <a href="https://stackoverflow.com/questions/47383506/pdfbox-obtain-bounding-box-of-rotated-image">
 * PDFBox - obtain bounding box of rotated image
 * </a>
 * <p>
 * This test demonstrates how to position images given their dimensions,
 * rotation angle, and the coordinates of the lower left corner of their
 * bounding box. The work horse is {@link #placeImage(PDDocument, PDPage,
 * PDImageXObject, float, float, float, float, float)}. 
 * </p>
 */
@Test
public void testPlaceByBoundingBox() throws IOException {
    try (   InputStream resource = getClass().getResourceAsStream("Willi-1.jpg");
            PDDocument document = new PDDocument()  ) {
        PDPage page = new PDPage();
        document.addPage(page);

        PDRectangle mediaBox = page.getMediaBox();
        float bbLowerLeftX = 50;
        float bbLowerLeftY = 100;

        try (   PDPageContentStream contentStream = new PDPageContentStream(document, page)   ) {
            contentStream.moveTo(bbLowerLeftX, mediaBox.getLowerLeftY());
            contentStream.lineTo(bbLowerLeftX, mediaBox.getUpperRightY());
            contentStream.moveTo(mediaBox.getLowerLeftX(), bbLowerLeftY);
            contentStream.lineTo(mediaBox.getUpperRightX(), bbLowerLeftY);
            contentStream.stroke();
        }

        PDImageXObject image = PDImageXObject.createFromByteArray(document, IOUtils.toByteArray(resource), "Image");
        placeImage(document, page, image, bbLowerLeftX, bbLowerLeftY, image.getWidth(), image.getHeight(), (float)(Math.PI/4));
        placeImage(document, page, image, bbLowerLeftX, bbLowerLeftY, .5f*image.getWidth(), .5f*image.getHeight(), 0);
        placeImage(document, page, image, bbLowerLeftX, bbLowerLeftY, .25f*image.getWidth(), .25f*image.getHeight(), (float)(9*Math.PI/8));

        document.save(new File(RESULT_FOLDER, "rotatedImagesByBoundingBox.pdf"));
    }
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
public static byte[] getProcessDefinitionDiagramById(String processDefinitionId) throws Exception {
	ProcessDefinition pd = repositoryService
			.createProcessDefinitionQuery()
			.processDefinitionId( processDefinitionId )
			.singleResult();
	if (pd == null) {
		return null;
	}
	byte data[] = null;
	ProcessDefinitionEntity pde = (ProcessDefinitionEntity)pd;
	InputStream is = repositoryService.getResourceAsStream(pde.getDeploymentId(), pde.getDiagramResourceName());
	data = IOUtils.toByteArray(is);
	is.close();
	is = null;
	return data;
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
@Test
@Ignore("for generation and manual testing")
public void bigGeneratorTest() throws Exception {
	SignatureImageParameters signatureImageParameters = createSignatureImageParameters();

	for (SignatureImageParameters.VisualSignatureRotation rotation : SignatureImageParameters.VisualSignatureRotation.values()) {
		for (SignatureImageParameters.VisualSignatureAlignmentHorizontal horizontal : SignatureImageParameters.VisualSignatureAlignmentHorizontal
				.values()) {
			for (SignatureImageParameters.VisualSignatureAlignmentVertical vertical : SignatureImageParameters.VisualSignatureAlignmentVertical.values()) {
				signatureImageParameters.setRotation(rotation);
				signatureImageParameters.setAlignmentHorizontal(horizontal);
				signatureImageParameters.setAlignmentVertical(vertical);
				String[] pdfs = new String[] { "normal", "90", "180", "270" };
				for (String pdf : pdfs) {
					DSSDocument document = sign(signablePdfs.get(pdf));
					File checkPdfFile = new File(
							"target/pdf/check_" + rotation.name() + "_" + pdf + "_" + horizontal.name() + "_" + vertical.name() + ".pdf");
					checkPdfFile.getParentFile().mkdirs();
					IOUtils.copy(document.openStream(), new FileOutputStream(checkPdfFile));
				}
			}
		}
	}
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
/**
 * <a href="http://stackoverflow.com/questions/29123436/how-to-sign-an-inputstream-from-a-pdf-file-with-pdfbox-2-0-0">
 * How to sign an InputStream from a PDF file with PDFBox 2.0.0
 * </a>
 * 
 * Test the equivalent for PDFBox 1.8.8. Works alright.
 */
@Test
public void testDummySignInMemory() throws IOException, COSVisitorException, SignatureException
{
    try (   InputStream sourceStream = getClass().getResourceAsStream("/mkl/testarea/pdfbox1/assembly/document1.pdf");
            OutputStream output = new FileOutputStream(new File(RESULT_FOLDER, "document1-with-dummy-sig.pdf")))
    {
        byte[] input = IOUtils.toByteArray(sourceStream);
        output.write(input);
        signDetached(input, output, new SignatureInterface()
                {
                    @Override
                    public byte[] sign(InputStream content) throws SignatureException, IOException
                    {
                        return "Test".getBytes();
                    }
                });
    }
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
void test(String resourceName, File resultFile) throws IOException, COSVisitorException, CertificateEncodingException
{
    try (   InputStream source = getClass().getResourceAsStream(resourceName);
            FileOutputStream fos = new FileOutputStream(resultFile);
            FileInputStream fis = new FileInputStream(resultFile);
            )
    {
        List<byte[]> certificates = new ArrayList<byte[]>();
        for (int i = 0; i < cert.length; i++)
            certificates.add(cert[i].getEncoded());
        COSDictionary dss = createDssDictionary(certificates, null, null);

        byte inputBytes[] = IOUtils.toByteArray(source);

        PDDocument pdDocument = PDDocument.load(new ByteArrayInputStream(inputBytes));
        PDDocumentCatalog catalog = pdDocument.getDocumentCatalog();
        catalog.getCOSObject().setNeedToBeUpdate(true);
        catalog.getCOSDictionary().setItem(COSName.getPDFName("DSS"), dss);

        fos.write(inputBytes);
        pdDocument.saveIncremental(fis, fos);
        pdDocument.close();
    }
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
@Override
public byte[] download( String prefix, Long id, String format ) throws InvoiceServiceException
{
    try
    {
        InputStream in = storeService.downloadFile( blobStoreFileFactory.produce( format, prefix, id ) );

        if ( in == null ) throw new InvoiceMissingException();

        return IOUtils.toByteArray( in );
    }
    catch ( IOException e )
    {
        throw new InvoiceServiceException( e );
    }
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
@Ignore
@Test
public void firstPageOf() throws Exception {

    URL resource = Resources.getResource(PdfManipulatorTest.class, "sample-invoice.pdf");
    byte[] bytes = Resources.toByteArray(resource);

    Stamp stamp = new Stamp(Arrays.asList(
            "approved by: Joe Bloggs",
            "approved on: 3-May-2017 14:15",
            "doc barcode: 3013011234"
    ), Arrays.asList(
            "debtor IBAN: FR12345678900000123",
            "crdtor IBAN: FR99999912312399800",
            "gross amt  : 12345.99"
    ), "http://www.google.com");

    final PdfManipulator pdfManipulator = new PdfManipulator();
    pdfManipulator.pdfBoxService = new PdfBoxService();


    //stamp = null;
    byte[] firstPageBytes = pdfManipulator.extractAndStamp(bytes, new ExtractSpec(3,1), stamp);

    IOUtils.copy(new ByteArrayInputStream(firstPageBytes), new FileOutputStream("x.pdf"));
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
@Override
public void process(ExamPaper examPaper) {
    try {
        examPaper.setPageImages(pdfProcessor.getPageImages(examPaper));
        examPaper.setQRCodeString(pdfProcessor.readQRCode(examPaper));
    } catch (PdfException | NotFoundException ex) {
        exceptionLogger.logException(ex);
        LOGGER.debug("QR-koodia ei pystytty lukemaan.");
        if (saveOnExamPaperPDFError) {
            try {
                InputStream stream = new ByteArrayInputStream(examPaper.getPdf());
                fileSaver.saveInputStream(stream, saveErrorFolder, "" + System.currentTimeMillis() + ".pdf");
                IOUtils.closeQuietly(stream);
                LOGGER.debug("Tallennettin virheellinen PDF.");
            } catch (FileAlreadyExistsException ex1) {
                exceptionLogger.logException(ex);
            }
        }
        // Don't continue if we couldn't read QR code.
        return;
    }
    processNextStages(examPaper);
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
/**
 * Register a font. If possible, try to use a font file, i.e.
 * {@link #registerFont(String,File)}. This method will lead to the creation of
 * a temporary file which stores the font data.
 * 
 * @param fontName
 *            the name of the font to use. If null, the name is taken from the
 *            font.
 * @param fontStream
 *            the input stream of the font. This file must be a ttf/otf file!
 *            You have to close the stream outside, this method will not close
 *            the stream.
 */
@SuppressWarnings("WeakerAccess")
public void registerFont(String fontName, InputStream fontStream) throws IOException {
	File fontFile = File.createTempFile("pdfboxgfx2dfont", ".ttf");
	FileOutputStream out = new FileOutputStream(fontFile);
	try {
		IOUtils.copy(fontStream, out);
	} finally {
		out.close();
	}
	fontFile.deleteOnExit();
	tempFiles.add(fontFile);
	registerFont(fontName, fontFile);
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
/**
 * <a href="http://stackoverflow.com/questions/41767351/create-pkcs7-signature-from-file-digest">
 * Create pkcs7 signature from file digest
 * </a>
 * <p>
 * The OP's <code>sign</code> method after fixing some errors. The
 * OP's original method is {@link #signBySnox(InputStream)}. The
 * errors were
 * </p>
 * <ul>
 * <li>multiple attempts at reading the {@link InputStream} parameter;
 * <li>convoluted creation of final CMS container.
 * </ul>
 * <p>
 * Additionally this method uses SHA256 instead of SHA-1.
 * </p>
 */
public byte[] signWithSeparatedHashing(InputStream content) throws IOException
{
    try
    {
        // Digest generation step
        MessageDigest md = MessageDigest.getInstance("SHA256", "BC");
        byte[] digest = md.digest(IOUtils.toByteArray(content));

        // Separate signature container creation step
        List<Certificate> certList = Arrays.asList(chain);
        JcaCertStore certs = new JcaCertStore(certList);

        CMSSignedDataGenerator gen = new CMSSignedDataGenerator();

        Attribute attr = new Attribute(CMSAttributes.messageDigest,
                new DERSet(new DEROctetString(digest)));

        ASN1EncodableVector v = new ASN1EncodableVector();

        v.add(attr);

        SignerInfoGeneratorBuilder builder = new SignerInfoGeneratorBuilder(new BcDigestCalculatorProvider())
                .setSignedAttributeGenerator(new DefaultSignedAttributeTableGenerator(new AttributeTable(v)));

        AlgorithmIdentifier sha256withRSA = new DefaultSignatureAlgorithmIdentifierFinder().find("SHA256withRSA");

        CertificateFactory certFactory = CertificateFactory.getInstance("X.509");
        InputStream in = new ByteArrayInputStream(chain[0].getEncoded());
        X509Certificate cert = (X509Certificate) certFactory.generateCertificate(in);

        gen.addSignerInfoGenerator(builder.build(
                new BcRSAContentSignerBuilder(sha256withRSA,
                        new DefaultDigestAlgorithmIdentifierFinder().find(sha256withRSA))
                                .build(PrivateKeyFactory.createKey(pk.getEncoded())),
                new JcaX509CertificateHolder(cert)));

        gen.addCertificates(certs);

        CMSSignedData s = gen.generate(new CMSAbsentContent(), false);
        return s.getEncoded();
    }
    catch (Exception e)
    {
        e.printStackTrace();
        throw new IOException(e);
    }
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
/**
 * <a href="http://stackoverflow.com/questions/41116833/pdf-signature-validation">
 * PDF Signature Validation
 * </a>
 * <br/>
 * <a href="https://drive.google.com/file/d/0BzEmZ9pRWLhPOUJSYUdlRjg2eEU/view?usp=sharing">
 * SignatureVlidationTest.pdf
 * </a>
 * <p>
 * The code completely ignores the <b>SubFilter</b> of the signature.
 * It is appropriate for signatures with <b>SubFilter</b> values
 * <b>adbe.pkcs7.detached</b> and <b>ETSI.CAdES.detached</b>
 * but will fail for signatures with <b>SubFilter</b> values
 * <b>adbe.pkcs7.sha1</b> and <b>adbe.x509.rsa.sha1</b>.
 * </p>
 * <p>
 * The example document has been signed with a signatures with
 * <b>SubFilter</b> value <b>adbe.pkcs7.sha1</b>.
 * </p>
 */
@Test
public void testValidateSignatureVlidationTest() throws Exception
{
    System.out.println("\nValidate signature in SignatureVlidationTest.pdf; original code.");
    byte[] pdfByte;
    PDDocument pdfDoc = null;
    SignerInformationVerifier verifier = null;
    try
    {
        pdfByte = IOUtils.toByteArray(this.getClass().getResourceAsStream("SignatureVlidationTest.pdf"));
        pdfDoc = PDDocument.load(new ByteArrayInputStream(pdfByte));
        PDSignature signature = pdfDoc.getSignatureDictionaries().get(0);

        byte[] signatureAsBytes = signature.getContents(pdfByte);
        byte[] signedContentAsBytes = signature.getSignedContent(pdfByte);
        CMSSignedData cms = new CMSSignedData(new CMSProcessableByteArray(signedContentAsBytes), signatureAsBytes);
        SignerInformation signerInfo = (SignerInformation) cms.getSignerInfos().getSigners().iterator().next();
        X509CertificateHolder cert = (X509CertificateHolder) cms.getCertificates().getMatches(signerInfo.getSID())
                .iterator().next();
        verifier = new JcaSimpleSignerInfoVerifierBuilder().setProvider(new BouncyCastleProvider()).build(cert);

        // result if false
        boolean verifyRt = signerInfo.verify(verifier);
        System.out.println("Verify result: " + verifyRt);
    }
    finally
    {
        if (pdfDoc != null)
        {
            pdfDoc.close();
        }
    }
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
/**
 * <a href="http://stackoverflow.com/questions/41116833/pdf-signature-validation">
 * PDF Signature Validation
 * </a>
 * <br/>
 * <a href="https://drive.google.com/file/d/0BzEmZ9pRWLhPOUJSYUdlRjg2eEU/view?usp=sharing">
 * SignatureVlidationTest.pdf
 * </a>
 * <p>
 * This code also ignores the <b>SubFilter</b> of the signature,
 * it is appropriate for signatures with <b>SubFilter</b> value
 * <b>adbe.pkcs7.sha1</b> which the example document has been
 * signed with.
 * </p>
 */
@Test
public void testValidateSignatureVlidationTestAdbePkcs7Sha1() throws Exception
{
    System.out.println("\nValidate signature in SignatureVlidationTest.pdf; special adbe.pkcs7.sha1 code.");
    byte[] pdfByte;
    PDDocument pdfDoc = null;
    SignerInformationVerifier verifier = null;
    try
    {
        pdfByte = IOUtils.toByteArray(this.getClass().getResourceAsStream("SignatureVlidationTest.pdf"));
        pdfDoc = PDDocument.load(new ByteArrayInputStream(pdfByte));
        PDSignature signature = pdfDoc.getSignatureDictionaries().get(0);

        byte[] signatureAsBytes = signature.getContents(pdfByte);
        CMSSignedData cms = new CMSSignedData(new ByteArrayInputStream(signatureAsBytes));
        SignerInformation signerInfo = (SignerInformation) cms.getSignerInfos().getSigners().iterator().next();
        X509CertificateHolder cert = (X509CertificateHolder) cms.getCertificates().getMatches(signerInfo.getSID())
                .iterator().next();
        verifier = new JcaSimpleSignerInfoVerifierBuilder().setProvider(new BouncyCastleProvider()).build(cert);

        boolean verifyRt = signerInfo.verify(verifier);
        System.out.println("Verify result: " + verifyRt);

        byte[] signedContentAsBytes = signature.getSignedContent(pdfByte);
        MessageDigest md = MessageDigest.getInstance("SHA1");
        byte[] calculatedDigest = md.digest(signedContentAsBytes);
        byte[] signedDigest = (byte[]) cms.getSignedContent().getContent();
        System.out.println("Document digest equals: " + Arrays.equals(calculatedDigest, signedDigest));
    }
    finally
    {
        if (pdfDoc != null)
        {
            pdfDoc.close();
        }
    }
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
private static byte[] getDiagramByte(ProcessInstance pi) throws Exception {
	byte[] data = null;
	ProcessDiagramGenerator processDiagramGenerator = new DefaultProcessDiagramGenerator();
	BpmnModel model = repositoryService.getBpmnModel(pi.getProcessDefinitionId());
	InputStream is = processDiagramGenerator.generateDiagram(
			model, 
			"png", 
			runtimeService.getActiveActivityIds(pi.getId()));
	data = IOUtils.toByteArray(is);
	is.close();
	is = null;	
	return data;
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
@Test
@Ignore("for generation and manual testing")
public void rotateTest() throws Exception {
	SignatureImageParameters signatureImageParameters = createSignatureImageParameters();

	signatureImageParameters.setRotation(SignatureImageParameters.VisualSignatureRotation.AUTOMATIC);
	DSSDocument document = sign(signablePdfs.get("minoltaScan90"));
	File checkPdfFile = new File("target/pdf/check.pdf");
	checkPdfFile.getParentFile().mkdirs();
	IOUtils.copy(document.openStream(), new FileOutputStream(checkPdfFile));
}
 

import org.apache.pdfbox.io.IOUtils; //导入依赖的package包/类
/**
 * @param pdfStream the input stream for reading the PDF. It will be closed before returning from
 *                  this method
 * @param readStrategy decides if PDF is completely read into memory or not
 */
private PdfValidationResult validateForPrint(InputStream pdfStream, PdfValidationSettings printValidationSettings, PdfValidateStrategy readStrategy) {
    int numberOfPages = -1;
    try {
        List<PdfValidationError> errors;
        try {
            if (readStrategy == NON_SEQUENTIALLY) {
                try (EnhancedNonSequentialPDFParser dpostNonSequentialPDFParser = new EnhancedNonSequentialPDFParser(pdfStream)){
                    numberOfPages = dpostNonSequentialPDFParser.getNumberOfPages();
                    errors = validateStreamForPrint(dpostNonSequentialPDFParser, printValidationSettings);
                }
            } else if (readStrategy == FULLY_IN_MEMORY) {
                try (PDDocument pdDoc = PDDocument.load(pdfStream)) {
                    numberOfPages = pdDoc.getNumberOfPages();
                    errors = validateDocumentForPrint(pdDoc, printValidationSettings);
                }
            } else {
                throw new IllegalArgumentException("Unknown " + PdfValidateStrategy.class.getSimpleName() + ": " + readStrategy);
            }
        } catch (Exception e) {
            errors = asList(PdfValidationError.PDF_PARSE_ERROR);
            LOG.info("PDF could not be parsed. (" + e.getMessage() + ")");
            LOG.debug(e.getMessage(), e);
        }

        return new PdfValidationResult(errors, numberOfPages, printValidationSettings.bleed);
    } finally {
        IOUtils.closeQuietly(pdfStream);
    }
}