Example usage for java.io DataOutputStream write

List of usage examples for java.io DataOutputStream write

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Introduction

In this page you can find the example usage for java.io DataOutputStream write.

Prototype

public synchronized void write(int b) throws IOException

Source Link

Document

Writes the specified byte (the low eight bits of the argument b) to the underlying output stream.

Usage

From source file:com.linkedin.pinot.common.utils.DataTable.java

private byte[] serializeMetadata() throws Exception {
    if (metadata != null) {
        final ByteArrayOutputStream baos = new ByteArrayOutputStream();
        final DataOutputStream out = new DataOutputStream(baos);
        out.writeInt(metadata.size());/*w  w  w.  j a  v a 2 s .  c o m*/
        for (Entry<String, String> entry : metadata.entrySet()) {
            byte[] keyBytes = entry.getKey().getBytes(UTF8);
            out.writeInt(keyBytes.length);
            out.write(keyBytes);
            byte[] valueBytes = entry.getValue().getBytes(UTF8);
            out.writeInt(valueBytes.length);
            out.write(valueBytes);
        }
        return baos.toByteArray();
    }
    return new byte[0];
}

From source file:darks.learning.word2vec.Word2Vec.java

/**
 * Save model/*  w w  w  .  j  a v a  2 s  .c om*/
 * 
 * @param file Model file saved
 */
public void saveModel(File file) {
    log.info("Saving word2vec model to " + file);
    DataOutputStream dos = null;
    try {
        dos = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(file)));
        dos.writeInt(wordNodes.size());
        dos.writeInt(config.featureSize);
        double[] syn0 = null;
        for (Entry<String, WordNode> element : wordNodes.entrySet()) {
            byte[] bytes = element.getKey().getBytes();
            dos.writeInt(bytes.length);
            dos.write(bytes);
            syn0 = (element.getValue()).feature.toArray();
            for (int i = 0; i < config.featureSize; i++) {
                dos.writeDouble(syn0[i]);
            }
        }
    } catch (IOException e) {
        log.error(e.getMessage(), e);
    } finally {
        IOUtils.closeStream(dos);
    }
}

From source file:org.opencms.synchronize.CmsSynchronize.java

/**
 * This writes the byte content of a resource to the file on the server
 * file system.<p>/*from w w w .ja v  a  2  s  .  co  m*/
 *
 * @param content the content of the file in the VFS
 * @param file the file in SFS that has to be updated with content
 * 
 * @throws IOException if something goes wrong
 */
private void writeFileByte(byte[] content, File file) throws IOException {

    FileOutputStream fOut = null;
    DataOutputStream dOut = null;
    try {
        // write the content to the file in server filesystem
        fOut = new FileOutputStream(file);
        dOut = new DataOutputStream(fOut);
        dOut.write(content);
        dOut.flush();
    } catch (IOException e) {
        throw e;
    } finally {
        try {
            if (fOut != null) {
                fOut.close();
            }
        } catch (IOException e) {
            // ignore
        }
        try {
            if (dOut != null) {
                dOut.close();
            }
        } catch (IOException e) {
            // ignore
        }
    }
}

From source file:org.latticesoft.util.common.CryptoHelper.java

public String encode(String input) {
    if (this.keyPair == null || input == null || input.length() == 0) {
        return "";
    }/*from  w  w  w. java  2s . c  om*/
    int index = 0;
    int diff = 0;
    StringBuffer sb = new StringBuffer();
    String algor = this.getInstanceAlgorithm();
    PublicKey pubKey = null;
    SecureRandom srand = null;
    Cipher rsaEnc = null;
    ByteArrayOutputStream baos = null;
    DataOutputStream dos = null;
    byte[] data = input.getBytes();
    int bufferSize = strength / 32;
    byte[] buffer = new byte[bufferSize];
    byte[] tmp = null;
    String output = null;

    try {
        pubKey = this.keyPair.getPublic();
        srand = SecureRandom.getInstance(this.secureRandomAlgorithm, this.secureRandomProviderName);
        rsaEnc = Cipher.getInstance(algor, this.providerName);
        rsaEnc.init(Cipher.ENCRYPT_MODE, pubKey, srand);

        baos = new ByteArrayOutputStream();
        dos = new DataOutputStream(baos);
        while (index < data.length) {
            diff = data.length - index;
            if (diff > buffer.length) {
                diff = buffer.length;
            }
            NumeralUtil.resetByteArray(buffer);
            System.arraycopy(data, index, buffer, 0, diff);
            tmp = rsaEnc.doFinal(buffer, 0, buffer.length);
            if (tmp != null) {
                dos.writeInt(tmp.length);
                dos.write(tmp);
                NumeralUtil.resetByteArray(tmp);
            }
            tmp = null;//*/
            index += diff;
        }
        output = NumeralUtil.toHexString(baos.toByteArray());
    } catch (Exception e) {
        if (log.isErrorEnabled()) {
            log.error("Error in encryption", e);
        }
    }
    return output;
}

From source file:fedora.test.api.TestRESTAPI.java

public void testAddDatastream() throws Exception {
    // inline (X) datastream
    String xmlData = "<foo>bar</foo>";
    String dsPath = "/objects/" + pid + "/datastreams/FOO";
    url = dsPath + "?controlGroup=X&dsLabel=bar";
    assertEquals(SC_UNAUTHORIZED, post(xmlData, false).getStatusCode());
    HttpResponse response = post(xmlData, true);
    assertEquals(SC_CREATED, response.getStatusCode());
    Header locationHeader = response.getResponseHeader("location");
    assertNotNull(locationHeader);/*from w w  w . ja  v a  2  s. com*/
    assertEquals(new URL(url.substring(0, url.indexOf('?'))).toString(), locationHeader.getValue());
    assertEquals("text/xml", response.getResponseHeader("Content-Type").getValue());
    url = dsPath + "?format=xml";
    assertEquals(response.getResponseBodyString(), get(true).getResponseBodyString());

    // managed (M) datastream
    String mimeType = "text/plain";
    dsPath = "/objects/" + pid + "/datastreams/BAR";
    url = dsPath + "?controlGroup=M&dsLabel=bar&mimeType=" + mimeType;
    File temp = File.createTempFile("test", null);
    DataOutputStream os = new DataOutputStream(new FileOutputStream(temp));
    os.write(42);
    os.close();
    assertEquals(SC_UNAUTHORIZED, post(temp, false).getStatusCode());
    response = post(temp, true);
    assertEquals(SC_CREATED, response.getStatusCode());
    locationHeader = response.getResponseHeader("location");
    assertNotNull(locationHeader);
    assertEquals(new URL(url.substring(0, url.indexOf('?'))).toString(), locationHeader.getValue());
    assertEquals("text/xml", response.getResponseHeader("Content-Type").getValue());
    url = dsPath + "?format=xml";
    assertEquals(response.getResponseBodyString(), get(true).getResponseBodyString());
    Datastream ds = apim.getDatastream(pid.toString(), "BAR", null);
    assertEquals(ds.getMIMEType(), mimeType);
}

From source file:org.apache.hadoop.hbase.security.visibility.ExpAsStringVisibilityLabelServiceImpl.java

private Tag createTag(ExpressionNode node) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(baos);
    List<String> labels = new ArrayList<String>();
    List<String> notLabels = new ArrayList<String>();
    extractLabels(node, labels, notLabels);
    Collections.sort(labels);/*ww  w.  ja v a 2 s  . c o m*/
    Collections.sort(notLabels);
    // We will write the NOT labels 1st followed by normal labels
    // Each of the label we will write with label length (as short 1st) followed
    // by the label bytes.
    // For a NOT node we will write the label length as -ve.
    for (String label : notLabels) {
        byte[] bLabel = Bytes.toBytes(label);
        short length = (short) bLabel.length;
        length = (short) (-1 * length);
        dos.writeShort(length);
        dos.write(bLabel);
    }
    for (String label : labels) {
        byte[] bLabel = Bytes.toBytes(label);
        dos.writeShort(bLabel.length);
        dos.write(bLabel);
    }
    return new Tag(VISIBILITY_TAG_TYPE, baos.toByteArray());
}

From source file:org.nuxeo.ecm.core.blob.binary.AESBinaryManager.java

/**
 * Encrypts the given input stream into the given output stream, while also computing the digest of the input
 * stream.//w w w  .  j a  v a2s. c o m
 * <p>
 * File format version 1 (values are in network order):
 * <ul>
 * <li>10 bytes: magic number "NUXEOCRYPT"
 * <li>1 byte: file format version = 1
 * <li>1 byte: use keystore = 1, use PBKDF2 = 2
 * <li>if use PBKDF2:
 * <ul>
 * <li>4 bytes: salt length = n
 * <li>n bytes: salt data
 * </ul>
 * <li>4 bytes: IV length = p
 * <li>p bytes: IV data
 * <li>x bytes: encrypted stream
 * </ul>
 *
 * @param in the input stream containing the data
 * @param file the file containing the encrypted data
 * @return the digest of the input stream
 */
@Override
public String storeAndDigest(InputStream in, OutputStream out) throws IOException {
    out.write(FILE_MAGIC);
    DataOutputStream data = new DataOutputStream(out);
    data.writeByte(FILE_VERSION_1);

    try {
        // get digest to use
        MessageDigest messageDigest = MessageDigest.getInstance(digestAlgorithm);

        // secret key
        Key secret;
        if (usePBKDF2) {
            data.writeByte(USE_PBKDF2);
            // generate a salt
            byte[] salt = new byte[16];
            RANDOM.nextBytes(salt);
            // generate secret key
            secret = generateSecretKey(salt);
            // write salt
            data.writeInt(salt.length);
            data.write(salt);
        } else {
            data.writeByte(USE_KEYSTORE);
            // find secret key from keystore
            secret = getSecretKey();
        }

        // cipher
        Cipher cipher = Cipher.getInstance(AES_CBC_PKCS5_PADDING);
        cipher.init(Cipher.ENCRYPT_MODE, secret);

        // write IV
        byte[] iv = cipher.getIV();
        data.writeInt(iv.length);
        data.write(iv);

        // digest and write the encrypted data
        CipherAndDigestOutputStream cipherOut = new CipherAndDigestOutputStream(out, cipher, messageDigest);
        IOUtils.copy(in, cipherOut);
        cipherOut.close();
        byte[] digest = cipherOut.getDigest();
        return toHexString(digest);
    } catch (GeneralSecurityException e) {
        throw new NuxeoException(e);
    }

}

From source file:fedora.test.api.TestRESTAPI.java

public void testModifyDatastreamByReference() throws Exception {
    // Create BAR datastream
    url = String.format("/objects/%s/datastreams/BAR?controlGroup=M&dsLabel=bar", pid.toString());
    File temp = File.createTempFile("test", null);
    DataOutputStream os = new DataOutputStream(new FileOutputStream(temp));
    os.write(42);
    os.close();//from  w ww.ja  v  a2s.c  om
    assertEquals(SC_UNAUTHORIZED, post(temp, false).getStatusCode());
    assertEquals(SC_CREATED, post(temp, true).getStatusCode());

    // Update the content of the BAR datastream (using PUT)
    url = String.format("/objects/%s/datastreams/BAR", pid.toString());
    assertEquals(SC_UNAUTHORIZED, put(temp, false).getStatusCode());
    HttpResponse response = put(temp, true);
    assertEquals(SC_OK, response.getStatusCode());
    assertEquals("text/xml", response.getResponseHeader("Content-Type").getValue());
    url = url + "?format=xml";
    assertEquals(response.getResponseBodyString(), get(true).getResponseBodyString());

    // Ensure 404 on attempt to update BOGUS_DS via PUT
    url = "/objects/" + pid + "/datastreams/BOGUS_DS";
    assertEquals(SC_NOT_FOUND, put(temp, true).getStatusCode());

    // Update the content of the BAR datastream (using POST)
    url = String.format("/objects/%s/datastreams/BAR", pid.toString());
    response = post(temp, true);
    assertEquals(SC_CREATED, response.getStatusCode());
    Header locationHeader = response.getResponseHeader("location");
    assertNotNull(locationHeader);
    assertEquals(url, locationHeader.getValue());
    assertEquals("text/xml", response.getResponseHeader("Content-Type").getValue());
    url = url + "?format=xml";
    assertEquals(response.getResponseBodyString(), get(true).getResponseBodyString());

    // Update the label of the BAR datastream
    String newLabel = "tikibar";
    url = String.format("/objects/%s/datastreams/BAR?dsLabel=%s", pid.toString(), newLabel);
    assertEquals(SC_UNAUTHORIZED, put(false).getStatusCode());
    assertEquals(SC_OK, put(true).getStatusCode());
    assertEquals(newLabel, apim.getDatastream(pid.toString(), "BAR", null).getLabel());

    // Update the location of the EXTDS datastream (E type datastream)
    String newLocation = "http://" + getHost() + ":" + getPort() + "/" + getFedoraAppServerContext()
            + "/get/demo:REST/DC";
    url = String.format("/objects/%s/datastreams/EXTDS?dsLocation=%s", pid.toString(), newLocation);
    assertEquals(SC_UNAUTHORIZED, put(false).getStatusCode());
    assertEquals(SC_OK, put(true).getStatusCode());

    assertEquals(newLocation, apim.getDatastream(pid.toString(), "EXTDS", null).getLocation());
    String dcDS = new String(apia.getDatastreamDissemination(pid.toString(), "DC", null).getStream());
    String extDS = new String(apia.getDatastreamDissemination(pid.toString(), "EXTDS", null).getStream());
    assertEquals(dcDS, extDS);

    // Update DS1 by reference (X type datastream)
    // Error expected because attempting to access internal DS with API-A auth on
    url = String.format("/objects/%s/datastreams/DS1?dsLocation=%s", pid.toString(), newLocation);
    assertEquals(SC_UNAUTHORIZED, put(false).getStatusCode());
    assertEquals(SC_INTERNAL_SERVER_ERROR, put(true).getStatusCode());

    // Update DS1 by reference (X type datastream) - Success expected
    newLocation = getBaseURL() + "/ri/index.xsl";
    url = String.format("/objects/%s/datastreams/DS1?dsLocation=%s", pid.toString(), newLocation);
    assertEquals(SC_UNAUTHORIZED, put(false).getStatusCode());
    assertEquals(SC_OK, put(true).getStatusCode());
}

From source file:com.vimc.ahttp.HurlWorker.java

@SuppressWarnings({ "unchecked", "rawtypes" })
private void addBodyIfExists(HttpURLConnection connection, Request request) throws IOException {
    if (request.containsMutilpartData()) {
        connection.setDoOutput(true);//from w w w .  j  av  a2s.c o  m
        connection.addRequestProperty(HEADER_CONTENT_TYPE, request.getBodyContentType());
        DataOutputStream out = new DataOutputStream(connection.getOutputStream());

        if (request.getStringParams().size() > 0) {
            writeStringFields(request.getStringParams(), out, request.getBoundray());
        }
        if (request.getFileParams().size() > 0) {
            writeFiles(request.getFileParams(), out, request.getBoundray());
        }
        if (request.getByteParams().size() > 0) {
            writeBytes(request.getByteParams(), out, request.getBoundray());
        }
        out.flush();
        out.close();
    } else {
        byte[] body = request.getStringBody();
        if (body != null) {
            connection.setDoOutput(true);
            connection.addRequestProperty(HEADER_CONTENT_TYPE, request.getBodyContentType());
            DataOutputStream out = new DataOutputStream(connection.getOutputStream());
            out.write(body);
            out.flush();
            out.close();
        }
    }
}

From source file:com.appbase.androidquery.callback.AbstractAjaxCallback.java

private static void writeField(DataOutputStream dos, String name, String value) throws IOException {
    dos.writeBytes(twoHyphens + boundary + lineEnd);
    dos.writeBytes("Content-Disposition: form-data; name=\"" + name + "\"");
    dos.writeBytes(lineEnd);//  w w  w  .  j  a  va2 s  .  c om
    dos.writeBytes(lineEnd);

    byte[] data = value.getBytes("UTF-8");
    dos.write(data);

    dos.writeBytes(lineEnd);
}