Java XML String Transform addElementToXml(String xmlFile, String nodeToAdd, String nodeContent)

Description

add Element To Xml

License

Apache License

Declaration

public static void addElementToXml(String xmlFile, String nodeToAdd, String nodeContent)
            throws ParserConfigurationException, SAXException, IOException, TransformerException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
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.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class Main {
    public static void addElementToXml(String xmlFile, String nodeToAdd, String nodeContent)
            throws ParserConfigurationException, SAXException, IOException, TransformerException {

        Document doc = getXmlDoc(xmlFile);

        NodeList nodes = doc.getChildNodes();

        Node node = doc.createElement(nodeToAdd);
        node.setNodeValue(nodeContent);//from ww w .j  av a2  s  .c om

        nodes.item(0).appendChild(node);

        saveXml(doc, xmlFile);
    }

    public static Document getXmlDoc(String xmlFile)
            throws ParserConfigurationException, SAXException, IOException {

        DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
        domFactory.setIgnoringComments(true);
        domFactory.setIgnoringElementContentWhitespace(true);
        DocumentBuilder builder = domFactory.newDocumentBuilder();
        Document doc = builder.parse(new File(xmlFile));
        return doc;
    }

    public static void saveXml(Document modDoc, String path) throws TransformerException, IOException {
        Writer writer = null;
        try {
            TransformerFactory tranFactory = TransformerFactory.newInstance();
            Transformer aTransformer = tranFactory.newTransformer();
            Source src = new DOMSource(modDoc);
            writer = getFileWriter(path);
            Result dest = new StreamResult(writer);

            aTransformer.setOutputProperty(OutputKeys.INDENT, "yes");
            aTransformer.setOutputProperty(OutputKeys.METHOD, "xml");
            aTransformer.transform(src, dest);
        } catch (TransformerException e) {
            throw e;
        } finally {

            writer.close();
        }

    }

    public static FileWriter getFileWriter(String filePath) {

        File xmlFile = new File(filePath);
        FileWriter writer = null;
        try {
            writer = new FileWriter(xmlFile);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return writer;
    }
}

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