OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Re: [xml-dev] adding new attribute to an existing xml fileusing JAXPwith

[ Lists Home | Date Index | Thread Index ]

Hi Rahil,

I don't see anything wrong in your code.

This may be a stupid question, but it is better for conform:

Did you finally persist the DOM tree back to test.xml after modifications?


Rahil wrote:

This is my first post to this forum and Im hoping to get some suggestions as Im completely exhausted trying to resolve my query.

My query is to add a new attribute to a selected node in an existing xml file.

I have a test.xml file whose structure is such:

        <Tag id="123" name="Home">
           <Value>Inner Text</Value>

Now using the JAXP DocumentBuilder I am able to access the attribute @name from the <Tag> node. I then want to insert a new attribute @new="some value" to this <Tag> node. But despite trying out several options Im not able to. I want to do something similar with the <Value> node as well and append some InnerText to the existing one.

My code so far is:
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(test.xml);

NodeList list = doc.getElementsByTagName("Tag");

for(int i=0; i<list.getLength();i++){
Element tagNode = (Element)list.item(i); //<Tag>
nm = tagNode.getAttributes();

for(int j=0;j<nm.getLength();j++){
   Node ndNm = nm.item(j); // id, name --attributes names
   nodeLocNm = ndNm.getNodeName();

   if(nodeLocNm.equals(new String("name"))){
       String nodeVal = nm.item(j).getNodeValue(); //@name value -- do something
       String newRes = "new value";
       tagNode.setAttribute("new", "new value");


Of course no attribute @name gets added to test.xml which is my problem !

Could someone please help.

Thanks in advance to everyone for helping out!

The xml-dev list is sponsored by XML.org <http://www.xml.org>, an
initiative of OASIS <http://www.oasis-open.org>

The list archives are at http://lists.xml.org/archives/xml-dev/

To subscribe or unsubscribe from this list use the subscription
manager: <http://www.oasis-open.org/mlmanage/index.php>


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS