Change value of an xml tag using java

Question

I have the following xml format:

<component>
   <observation classCode="OBS" moodCode="EVN">
      <value unit="mm[Hg]" value="120.0" xsi:type="PQ"/>
  </observation>
</component>

I want to change value "120.0" to "120". Thus, remove the decimal part using java code.

Currently, my code is the following but it's incomplete.

    NodeList nodePhysical = dom.getElementsByTagName("observation");

    for (int i = 0; i < nodePhysical.getLength(); i++) {
        Node node = nodePhysical.item(i);

        NodeList childNodes = node.getChildNodes();

    }

Look at the setAttribute function in org.w3c.dom.Element. — Sascha
– Sascha, Commented May 20, 2019 at 13:58

Srinivasan Sekar · Accepted Answer · 2019-05-21 13:20:33Z

2

Try this,

    NodeList nodePhysical = dom.getElementsByTagName("observation");
    for (int i = 0; i < nodePhysical.getLength(); i++) {
    Node node = nodePhysical.item(i);
    NodeList childNodes = node.getChildNodes();
    Element ele;
    for (int count = 0; count < childNodes.getLength(); count++) {
    ele= (Element) childNodes.item(count);
    ele.setAttribute("value",ele.getAttribute("value").split("\\.")[0]);
    }
    }

edited May 21, 2019 at 13:20

answered May 20, 2019 at 14:54

Srinivasan Sekar

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2 Comments

zinon Over a year ago

What is nodeList? And where do I have this? Within the for-loop that I already have?

zinon Over a year ago

Thanks. Also, attribute "id" does not exist. Where do I have to locate this code? Within my other for-loop? Can you please write the full code, including what you need from my current code please?

Srinivasan Sekar · Accepted Answer · 2019-05-21 13:35:49Z

0

Thank you @Srinivasan Sekar for your help!

I fixed it.

My new code is:

    NodeList nodePhysical = dom.getElementsByTagName("observation");

    for (int i = 0; i < nodePhysical.getLength(); i++) {
        Node node = nodePhysical.item(i);
        NodeList nodeC = node.getChildNodes();
        for (int j = 0; j < nodeC.getLength(); j++) {
            if(nodeC.item(j).getNodeType() == Node.ELEMENT_NODE){
                Element element = (Element) nodeC.item(j);
                element.setAttribute("value", (element.getAttribute("value").split("\\.")[0]));
            }
        }
    }

edited May 21, 2019 at 13:35

Srinivasan Sekar

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answered May 21, 2019 at 13:09

zinon

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