Xml parsing for in between xml data with tags in java

Question

Xml parsing for inbetween xml data

I have a XML string in one my java String objects as below:

<Record>
    <op>Add</op>
    <sensdata>400188711111</sensdata>
    <id>4</id>
    <a1>1111201090467034</a1>
</Record>

If i need the data between

<Record> </Record>

ie

<op>Add</op>
<sensdata>4001887XXXXX</sensdata>
<id>4</id>
<a1>1111201090467034</a1>

Can I get using the xml parser. I am able to get the values like Add40018871111141111201090467034. But not with tags.

Below is my code snippet

ByteArrayInputStream stream = new ByteArrayInputStream("<Record><op>Add</op><sensdata>400188711111</sensdata><id>4</id><a1>1111201090467034</a1></Record>".getBytes());
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document document = builder.parse(stream);
NodeList sensdata = document.getDocumentElement().getElementsByTagName("sensdata");
String sensitiveData = sensdata.item(0).getTextContent();

Editing my question with the Solution i have tried:

I did as below:

ByteArrayInputStream stream = new ByteArrayInputStream(toBeParsed.getBytes());
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document document = builder.parse(stream);      
NodeList XmlTagNodeList = document.getDocumentElement().getElementsByTagName(XmlTag);
Document newXmlDocument = DocumentBuilderFactory.newInstance()
        .newDocumentBuilder().newDocument();
for (int i = 0; i < XmlTagNodeList.getLength(); i++) {
    Node node = XmlTagNodeList.item(i);
    Node copyNode = newXmlDocument.importNode(node, true);
    newXmlDocument.appendChild(copyNode);
}

DOMImplementationLS domImplementationLS = (DOMImplementationLS) newXmlDocument.getImplementation();
LSSerializer lsSerializer = domImplementationLS.createLSSerializer();
record = lsSerializer.writeToString(newXmlDocument);
System.out.println(record);

It prints record prepended with xml tag for every record.

Kindly let me know, is it a good way to do it? And I do not require xml tag. How to get rid of this?

Answer 1

If you are trying to output the XML literally, with the tags and stuff, you can do it by using the Transformer API available at javax.xml.transform.*

TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no"); // I prefer to have the <?xml ?> tag
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
transformer.setOutputProperty(OutputKeys.INDENT, "yes"); // Indent the code
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8"); // Original encoding
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4"); // Indent 4 spaces

// write the XML of a single node to an OutputStream
transformer.transform(new DOMSource(node),  new StreamResult(new OutputStreamWriter(out, "UTF-8")));

Is this what you need?

Edit (looping through the nodes):

// Your previous code
LSSerializer lsSerializer = domImplementationLS.createLSSerializer();
StringBuilder builder = new StringBuilder();
NodeList children = newXmlDocument.getChildNodes();
for(int x = 0; x < children.getLength(); x++)
{
    Node node = children.item(x);
    builder.append(lsSerializer.writeToString(node));
    builder.append("\n");
}
System.out.println(builder.toString());

Is that any help?