Add new element to xml file with Java DOM

Question

I have been working with a simple cd catalog XML file:

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<CATALOG>
<CD>
<TITLE>Empire Burlesque</TITLE>
<ARTIST>Bob Dylan</ARTIST>
<COUNTRY>USA</COUNTRY>
<COMPANY>Columbia</COMPANY>
<PRICE>10.90</PRICE>
<YEAR>1985</YEAR>
</CD>
<CD>
<TITLE>Hide your heart</TITLE>
<ARTIST>Bonnie Tyler</ARTIST>
<COUNTRY>UK</COUNTRY>
<COMPANY>CBS Records</COMPANY>
<PRICE>9.90</PRICE>
<YEAR>1988</YEAR>
</CD>
</CATALOG>

With this method I want to create a new CD element:

private static void addCd(File xml) throws ParserConfigurationException, TransformerConfigurationException, TransformerException, SAXException, IOException {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document document = db.parse(xml);

        Element cd = document.createElement("CD");

        document.appendChild(cd);
        for (int i = 1; i <= 3; i++) {
            Element title = document.createElement("TITLE");
            Element artist = document.createElement("ARTIST");
            Element country = document.createElement("COUNTRY");
            Element company = document.createElement("COMPANY");
            Element price = document.createElement("PRICE");
            Element year = document.createElement("YEAR");


            title.appendChild(document.createTextNode("mike "));
            artist.appendChild(document.createTextNode("oconnor "));
            country.appendChild(document.createTextNode("ie "));
            company.appendChild(document.createTextNode("dell "));
            price.appendChild(document.createTextNode("14 "));
            year.appendChild(document.createTextNode("2014 "));

            cd.appendChild(title);
            cd.appendChild(artist);
            cd.appendChild(country);
            cd.appendChild(company);
            cd.appendChild(price);
            cd.appendChild(year);
        }

        TransformerFactory factory = TransformerFactory.newInstance();
        Transformer transformer = factory.newTransformer();
        DOMSource domSource = new DOMSource(document);
        StreamResult streamResult = new StreamResult(new File("cdCatalog.xml"));
        transformer.transform(domSource, streamResult);

        DOMSource source = new DOMSource(document);

    }

I can create a new CD element, but the new element appears outside my root (<CATALOG>) element:

<?xml version="1.0" encoding="utf-8" standalone="no"?><CATALOG>
<CD>
<TITLE>Empire Burlesque</TITLE>
<ARTIST>Bob Dylan</ARTIST>
<COUNTRY>USA</COUNTRY>
<COMPANY>Columbia</COMPANY>
<PRICE>10.90</PRICE>
<YEAR>1985</YEAR>
</CD>
<CD>
<TITLE>Hide your heart</TITLE>
<ARTIST>Bonnie Tyler</ARTIST>
<COUNTRY>UK</COUNTRY>
<COMPANY>CBS Records</COMPANY>
<PRICE>9.90</PRICE>
<YEAR>1988</YEAR>
</CD>
</CATALOG><CD><TITLE>mike </TITLE><ARTIST>oconnor </ARTIST><COUNTRY>ie </COUNTRY><COMPANY>dell </COMPANY><PRICE>14 </PRICE><YEAR>2014 </YEAR><TITLE>mike </TITLE><ARTIST>oconnor </ARTIST><COUNTRY>ie </COUNTRY><COMPANY>dell </COMPANY><PRICE>14 </PRICE><YEAR>2014 </YEAR><TITLE>mike </TITLE><ARTIST>oconnor </ARTIST><COUNTRY>ie </COUNTRY><COMPANY>dell </COMPANY><PRICE>14 </PRICE><YEAR>2014 </YEAR></CD>

I think I appended the wrong element, but have no idea how to append to CATALOG.

Suzon · Accepted Answer · 2014-03-14 19:35:43Z

9

The problem is, you were append element by document, YOU needs to append CD by root element

Try like this:

...
Document document = db.parse(xml);
Element root = document.getDocumentElement();
Element cd = document.createElement("CD");
root.appendChild(cd);
.....
......
....

answered Mar 14, 2014 at 19:35

Suzon

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Comments

Augusto · Accepted Answer · 2014-03-14 19:28:07Z

2

You should use the getElementsByTagName to get the first catalog tag and append your cd object to it, not to the document like you're doing.

answered Mar 14, 2014 at 19:28

Augusto

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Comments

Eskandar Abedini · Accepted Answer · 2022-05-15 17:06:22Z

0

You can use XML DOM editing features: Java DOM

answered May 15, 2022 at 17:06

Eskandar Abedini

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