Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.io.StringReader;
import java.io.StringWriter;

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;
import org.xml.sax.InputSource;

public class Main {
    public static String getXMLData() {
        return "<a><person><email>asdf</email></person></a>";
    }

    public static void main(String[] argv) throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        Document doc = factory.newDocumentBuilder().parse(new InputSource(new StringReader(getXMLData())));

        replacePerson(doc, "newName", "111111", "newEmail@email.com");

        System.out.println(documentToString(doc));

    }

    public static void replacePerson(Document doc, String name, String phone, String email) {
        Element newPersonNode = doc.createElement("person");

        Element nameNode = doc.createElement("name");
        newPersonNode.appendChild(nameNode);
        Text nametextNode = doc.createTextNode(name);
        nameNode.appendChild(nametextNode);

        Element phoneNode = doc.createElement("phone");
        newPersonNode.appendChild(phoneNode);
        Text phonetextNode = doc.createTextNode(phone);
        phoneNode.appendChild(phonetextNode);

        Element emailNode = doc.createElement("email");
        newPersonNode.appendChild(emailNode);
        Text emailtextNode = doc.createTextNode(email);
        emailNode.appendChild(emailtextNode);

        Element root = doc.getDocumentElement();
        Element oldPersonNode = (Element) root.getFirstChild();
        root.replaceChild(newPersonNode, oldPersonNode);
    }

    public static String documentToString(Document document) {
        try {
            TransformerFactory tf = TransformerFactory.newInstance();
            Transformer trans = tf.newTransformer();
            StringWriter sw = new StringWriter();
            trans.transform(new DOMSource(document), new StreamResult(sw));
            return sw.toString();
        } catch (TransformerException tEx) {
            tEx.printStackTrace();
        }
        return null;
    }
}