Example usage for java.io ByteArrayOutputStream flush

Introduction

In this page you can find the example usage for java.io ByteArrayOutputStream flush.

Prototype

public void flush() throws IOException 

Source Link

Document

Flushes this output stream and forces any buffered output bytes to be written out.

Usage

From source file:software.uncharted.util.HTTPUtil.java

public static String post(String urlToRead, String postData) {
    URL url;//from www  .j a va  2s .  c o m
    HttpURLConnection conn;
    try {
        url = new URL(urlToRead);
        conn = (HttpURLConnection) url.openConnection();

        conn.setRequestMethod("POST");
        conn.setDoOutput(true);
        conn.setRequestProperty("Content-Type", "application/json");

        DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
        wr.writeBytes(postData);
        wr.flush();
        wr.close();

        ByteArrayOutputStream buffer = new ByteArrayOutputStream();
        int nRead;
        byte[] data = new byte[16384];
        InputStream is = conn.getInputStream();
        while ((nRead = is.read(data, 0, data.length)) != -1) {
            buffer.write(data, 0, nRead);
        }
        buffer.flush();
        return buffer.toString();
    } catch (Exception e) {
        e.printStackTrace();
        System.err.println("Failed to read URL: " + urlToRead + " <" + e.getMessage() + ">");
    }
    return null;
}

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From source file:Main.java

/**
 * Converts a node to a string./*from  w ww .  j  a v a2  s.  co  m*/
 * @param node The node to convert.
 * @return A string representation of the node.
 */
public static String getStringFromNode(Node node) {
    DOMSource domSource = new DOMSource(node);
    ByteArrayOutputStream baos = null;
    try {
        baos = new ByteArrayOutputStream();
        StreamResult result = new StreamResult(baos);
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        transformer.transform(domSource, result);
        baos.flush();
        return new String(baos.toByteArray());
    } catch (Exception e) {
        throw new RuntimeException("Failed to stream node to string", e);
    } finally {
        try {
            baos.close();
        } catch (Exception e) {
        }
    }

}

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From source file:net.ripe.rpki.commons.crypto.x509cert.X509CertificateUtil.java

/**
 * Get a base 64-encoded, DER-encoded X.509 subjectPublicKeyInfo as used for the Trust Anchor Locator (TAL)
 *
 * @throws X509CertificateOperationException
 *
 * @throws IOException//from  w  w w . j a  v a 2 s .  c om
 */
public static String getEncodedSubjectPublicKeyInfo(X509Certificate certificate) {

    byte[] tbsCertificate;
    try {
        tbsCertificate = certificate.getTBSCertificate();
    } catch (CertificateEncodingException e) {
        throw new X509CertificateOperationException("Can't extract TBSCertificate from certificate", e);
    }
    ASN1Sequence tbsCertificateSequence = (ASN1Sequence) Asn1Util.decode(tbsCertificate);
    TBSCertificateStructure tbsCertificateStructure = new TBSCertificateStructure(tbsCertificateSequence);
    SubjectPublicKeyInfo subjectPublicKeyInfo = tbsCertificateStructure.getSubjectPublicKeyInfo();

    try {
        byte[] data = subjectPublicKeyInfo.getEncoded();
        Base64Encoder encoder = new Base64Encoder();
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        encoder.encode(data, 0, data.length, out);
        out.flush();
        return out.toString();
    } catch (IOException e) {
        throw new X509CertificateOperationException("Can't encode SubjectPublicKeyInfo for certificate", e);
    }
}

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From source file:Main.java

public static byte[] decompress(byte[] bytes) throws IOException {

    GZIPInputStream gzip = null;//from  w  ww.j av  a 2s.co  m
    ByteArrayOutputStream baos = null;
    try {
        baos = new ByteArrayOutputStream();

        gzip = new GZIPInputStream(new ByteArrayInputStream(bytes));

        int len = 0;
        byte data[] = new byte[BUFFER_SIZE];

        while ((len = gzip.read(data, 0, BUFFER_SIZE)) != -1) {
            baos.write(data, 0, len);
        }

        gzip.close();
        baos.flush();

        return baos.toByteArray();

    } finally {
        if (gzip != null) {
            gzip.close();
        }
        if (baos != null) {
            baos.close();
        }
    }
}

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From source file:com.chicm.cmraft.rpc.PacketUtils.java

private static int writeRpc(AsynchronousSocketChannel channel, Message header, Message body, int totalSize)
        throws IOException, InterruptedException, ExecutionException {
    // writing total size so that server can read all request data in one read
    //LOG.debug("total size:" + totalSize);
    long t = System.currentTimeMillis();

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    writeIntToStream(totalSize, bos);//from   w ww.  ja  v a  2s  .  c  o m

    header.writeDelimitedTo(bos);
    if (body != null)
        body.writeDelimitedTo(bos);

    bos.flush();
    byte[] b = bos.toByteArray();
    ByteBuffer buf = ByteBuffer.allocateDirect(totalSize + 4);
    buf.put(b);

    buf.flip();
    channel.write(buf).get();

    if (LOG.isTraceEnabled()) {
        LOG.trace("Write Rpc message to socket, takes " + (System.currentTimeMillis() - t) + " ms, size "
                + totalSize);
        LOG.trace("message:" + body);
    }
    return totalSize;
}

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From source file:it.polito.elite.dog.core.library.model.DeviceStatus.java

/**
 * Serialize a DeviceStatus into a String using a byte encoding
 * @param object//from   www . j a va 2  s . c om
 *          a DeviceStatus ready for serialization
 * @return a byte encoded String of a DeviceStatus
 * @throws IOException 
 */
public static String serializeToString(DeviceStatus object) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream encoder = new ObjectOutputStream(baos);
    //serialize the DeviceStatus
    encoder.writeObject(object);
    //flush and close everything
    encoder.flush();
    baos.flush();
    encoder.close();
    baos.close();
    return new String(Base64.encodeBase64(baos.toByteArray()));
}

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From source file:com.reydentx.core.common.PhotoUtils.java

public static byte[] waterMarkJPG(String baseImagePath, String waterMartPath) {
    try {/* ww  w .  j a  v a  2 s .c o m*/
        File origFile = new File(baseImagePath);
        ImageIcon icon = new ImageIcon(origFile.getPath());
        BufferedImage bufferedImage = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(),
                BufferedImage.TYPE_INT_RGB);
        Graphics graphics = bufferedImage.getGraphics();
        graphics.drawImage(icon.getImage(), 0, 0, null);

        ImageIcon png = new ImageIcon(waterMartPath);
        graphics.drawImage(png.getImage(), 0, 0, null);

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageIO.write(bufferedImage, "jpg", baos);
        baos.flush();
        byte[] imageInByte = baos.toByteArray();

        return imageInByte;
    } catch (IOException e) {
        e.printStackTrace();
    }

    return null;
}

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From source file:org.asqatasun.crawler.util.CrawlUtils.java

/**
 * Get the raw content of an image//from  ww w  .ja va2s .c om
 * @param is
 * @param imgExtension
 * @return
 */
public static byte[] getImageContent(InputStream is, String imgExtension) {
    // O P E N
    ByteArrayOutputStream baos = new ByteArrayOutputStream(BYTE_BUFFER_SIZE);
    byte[] resultImageAsRawBytes = null;
    try {
        BufferedImage image = ImageIO.read(is);
        // W R I T E
        ImageIO.write(image, imgExtension, baos);
        // C L O S E
        baos.flush();
        resultImageAsRawBytes = baos.toByteArray();
        baos.close();
    } catch (IOException ex) {
        LOGGER.warn(ex.getMessage());
    }
    return resultImageAsRawBytes;
}

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From source file:de.qaware.chronix.converter.common.Compression.java

/**
 * Compresses the given byte[]//  w  w  w .  j a  v a  2  s.co m
 *
 * @param decompressed - the byte[] to compress
 * @return the byte[] compressed
 */
public static byte[] compress(byte[] decompressed) {
    if (decompressed == null) {
        return new byte[] {};
    }
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(decompressed.length);
    OutputStream gzipOutputStream = null;
    try {
        gzipOutputStream = new GZIPOutputStream(byteArrayOutputStream);
        gzipOutputStream.write(decompressed);
        gzipOutputStream.flush();
        byteArrayOutputStream.flush();
    } catch (IOException e) {
        LOGGER.error("Exception occurred while compressing gzip stream.", e);
        return null;
    } finally {
        IOUtils.closeQuietly(gzipOutputStream);
        IOUtils.closeQuietly(byteArrayOutputStream);
    }

    return byteArrayOutputStream.toByteArray();
}

---

From source file:com.reydentx.core.common.PhotoUtils.java

public static byte[] cropBufferedImage(boolean isPNG, BufferedImage originalImage, int x, int y, int width,
        int height) throws IOException {
    byte[] imageFinal = null;
    if (originalImage != null) {
        // step 1: crop
        BufferedImage thumbnail = Scalr.crop(originalImage, x, y, width, height, Scalr.OP_ANTIALIAS);

        // step 2. convert BufferedImage to byte[].
        String extension = "";
        if (isPNG == true) {
            extension = "png";
        } else {/*  ww w .java  2 s.com*/
            extension = "jpg";
        }
        ByteArrayOutputStream outstream = new ByteArrayOutputStream();
        ImageIO.write(thumbnail, extension, outstream);
        outstream.flush();
        imageFinal = outstream.toByteArray();
        outstream.close();
    }
    return imageFinal;
}

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