Example usage for java.io ByteArrayInputStream ByteArrayInputStream

Introduction

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

Prototype

public ByteArrayInputStream(byte buf[])

Source Link

Document

Creates a ByteArrayInputStream so that it uses buf as its buffer array.

Usage

From source file:ZipDemo.java

public static final String uncompress(final byte[] compressed) throws IOException {
    String uncompressed = "";

    try {/*from   w w  w. j a v  a2 s.c  o  m*/
        ByteArrayInputStream bais = new ByteArrayInputStream(compressed);
        GZIPInputStream zis = new GZIPInputStream(bais);

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        int numBytesRead = 0;
        byte[] tempBytes = new byte[DEFAULT_BUFFER_SIZE];
        while ((numBytesRead = zis.read(tempBytes, 0, tempBytes.length)) != -1) {
            baos.write(tempBytes, 0, numBytesRead);
        }

        uncompressed = new String(baos.toByteArray());
    } catch (ZipException e) {
        e.printStackTrace(System.err);
    }

    return uncompressed;
}

From source file:Main.java

public static Serializable toSerializable(byte[] bytes) {
    if (bytes == null) {
        return null;
    }/*  ww w  . jav a2 s. co  m*/
    try {
        final ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
        final ObjectInputStream ois = new ObjectInputStream(bais);
        try {
            return (Serializable) ois.readObject();
        } finally {
            ois.close();
        }
    } catch (Exception e) {
        String msg = "Failed to convert the object to binary: bytes.length=" + bytes.length;
        throw new IllegalStateException(msg, e);
    }
}

From source file:Util.java

public static Object decompress(byte[] data) {
    if (data == null) {
        return null;
    }/*w ww  . j av  a  2s  .  c om*/
    try {
        ByteArrayInputStream bais = new ByteArrayInputStream(data);
        GZIPInputStream gin = new GZIPInputStream(bais);
        ObjectInputStream ois = new ObjectInputStream(gin);
        return ois.readObject();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static String prettyPrintXML(String xml, int indentAmount)
        throws TransformerConfigurationException, TransformerException {

    Transformer serializer = SAXTransformerFactory.newInstance().newTransformer();

    serializer.setOutputProperty(OutputKeys.INDENT, "yes");
    serializer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", String.valueOf(indentAmount));
    Source xmlSource = new SAXSource(new InputSource(new ByteArrayInputStream(xml.getBytes())));
    StreamResult res = new StreamResult(new ByteArrayOutputStream());
    serializer.transform(xmlSource, res);

    return new String(((ByteArrayOutputStream) res.getOutputStream()).toByteArray());
}

From source file:Main.java

/**
 * Creates a document from the given xml bytes.
 * @return The desired document. Never returns null but throws some Exception.
 * @throws ParserConfigurationException, IOException, SAXException  
 *///from www.  j  a va 2 s.c  o  m
public static Document getDocument(byte[] xml) throws ParserConfigurationException, IOException, SAXException {
    if (xml != null) {
        final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        // factory.setNamespaceAware( true );
        // factory.setValidating( true );
        final DocumentBuilder builder = factory.newDocumentBuilder();
        final Document document = builder.parse(new ByteArrayInputStream(xml));
        return document;
    }
    throw new IOException("No xml data");
}

From source file:Main.java

/**
 * Convert XML data to a bean using JAXB.
 * // w w  w .  j a va  2 s. c  om
 * @param b
 *            The bean, represented as XML.
 * @param implClass
 *            The implementation class of the bean.
 * @param bc
 *            Additional classes to add to the JAXB context.
 * @return The bean, unmarshalled from the XML data using JAXB.
 */
public static <T> T unmarshal(String b, Class<T> implClass, Class<?>... bc) {
    Class<?>[] bind;
    if (bc.length > 1) {
        bind = new Class<?>[bc.length + 1];
        bind[0] = implClass;
        for (int i = 0; i < bc.length; i++) {
            bind[i + 1] = bc[i];
        }
    } else {
        bind = new Class<?>[] { implClass, };
    }
    ByteArrayInputStream bais = new ByteArrayInputStream(b.getBytes());
    try {
        JAXBContext jaxbContext = JAXBContext.newInstance(bind);
        Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
        return implClass.cast(unmarshaller.unmarshal(bais));
    } catch (JAXBException e) {
        throw new IllegalStateException("Error unmarshalling", e);
    }
}

From source file:Main.java

private static Element getRootNodeFromXmlStr(String xmlStr) {
    Element element = null;/*from w ww .j  a v a 2s  . c  o m*/
    try {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        InputStream is = new ByteArrayInputStream(xmlStr.getBytes("UTF-8"));
        Document document = db.parse(is);
        element = document.getDocumentElement();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ParserConfigurationException e) {
        e.printStackTrace();
    } catch (SAXException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return element;
}

From source file:Main.java

public static Node getNode(String xmlStr, String nodeName, Map<String, String> attributesMap) {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    Node returnNode = null;/*from  w w w . j  a  v  a 2s .  com*/
    try {
        DocumentBuilder db = dbf.newDocumentBuilder();
        InputStream inStream = new ByteArrayInputStream(xmlStr.getBytes(StandardCharsets.UTF_8));
        // or InputSource inputSource = new InputSource( new StringReader(
        // xmlStr ) );
        Document doc = db.parse(inStream);
        DocumentTraversal dt = (DocumentTraversal) doc;
        NodeIterator i = dt.createNodeIterator(doc, NodeFilter.SHOW_ELEMENT, null, false);
        Node node = i.nextNode();
        while (node != null) {
            if (node.getNodeName().equals(nodeName)) {
                if (attributesExist(node, attributesMap)) {
                    returnNode = node;
                    break;
                }
            }
            node = i.nextNode();
        }
    } catch (Exception ex) {
        logger.error(ex);
    }
    return returnNode;
}

From source file:Main.java

/**
 * Validate xml file using specific schema
 * @param sourceXmlBytes/*  ww w .ja  v  a 2s  . c o  m*/
 *        the byte array reading from xml file
 * @param schemaUrl   
 *         schema url used for validation
 * @return  byte[]
 */
public static void validate(byte[] sourceXmlBytes, URL schemaUrl) throws IOException, SAXException {
    SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
    try {
        Schema schema = factory.newSchema(schemaUrl);
        Validator validator = schema.newValidator();
        Source source = new StreamSource(new ByteArrayInputStream(sourceXmlBytes));
        validator.validate(source);
    } catch (SAXException ex) {
        throw ex;
    } catch (IOException e) {
        throw e;
    }
}

From source file:net.es.nsi.topology.translator.http.Decoder.java

public static Document decode(String source) throws IOException {
    byte[] encoded = Base64.getDecoder().decode(source);
    byte[] xml = decompress(encoded);

    try {/*from w  w  w. ja v  a 2 s. c o m*/
        Document doc = DomParser.xml2Dom(new ByteArrayInputStream(xml));
        return doc;
    } catch (ParserConfigurationException | SAXException ex) {
        log.error("decode: failed to parse document", ex);
        throw new IOException(ex.getMessage(), ex.getCause());
    }
}