CODEWITHSUNDEEP
javaxml
Bharat M
Bharat M

Reputation: 109

How to get value from name-value pair property from XML in Java

Below are the contents of the local xml file 

<configuration>


<property>

<name>test</name>

<value>A</value>

</property>

</configuration>

How can I read in the value "A" in java? Here is the code that I am testing with in Java

    Properties properties = new Properties();
    FileInputStream fis = new FileInputStream("path to file");
    properties.load(fis);
    String test = properties.getProperty("test");
    System.out.println(test);

Is the problem with the java code? I can't seem to associate the name with the value. Moreover, I can't read the attribute value because of the fact that the real file contains multiple pairs of name-values.

 File file = new File("path to file");
    DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
            .newInstance();
    DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
    Document dom = documentBuilder.parse(file);
    Element docEle = dom.getDocumentElement();
    NodeList nl = docEle.getChildNodes();
    ArrayList<String> names = new ArrayList<String>();
    ArrayList<String> values = new ArrayList<String>();
    if (nl != null) {
        int length = nl.getLength();
        for (int i = 0; i < length; i++) {
            if (nl.item(i).getNodeType() == Node.ELEMENT_NODE) {
                Element el = (Element) nl.item(i);
                if (el.getNodeName().contains("configuration")) {
                    names.add( el.getElementsByTagName("name").item(0).getTextContent());
                    System.out.println(el.getElementsByTagName("name").item(0).getTextContent());
                    values.add( el.getElementsByTagName("value").item(0).getTextContent());
                    System.out.println(el.getElementsByTagName("value").item(0).getTextContent());
                }
            }
        }
    }

Upvotes: 0

Views: 2413

Answers (1)

dave
dave

Reputation: 575

You could do somthing like this:

    File file = new File("path to file");
    DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
        .newInstance();
    DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
    Document document = documentBuilder.parse(file);
    document.getDocumentElement().normalize();
    Element docEle = document.getDocumentElement();
    NodeList nl = docEle.getElementsByTagName("property");
    ArrayList names = new ArrayList();
    ArrayList values = new ArrayList();
    if (nl != null) {
        int length = nl.getLength();
        //System.out.println(length);
        for (int i = 0; i < length; i++) {
            if (nl.item(i).getNodeType() == Node.ELEMENT_NODE) {
                Element el = (Element) nl.item(i);
                if (el.getNodeName().contains("property")) {
                    names.add( el.getElementsByTagName("name").item(0).getTextContent());
                    //System.out.println(el.getElementsByTagName("name").item(0).getTextContent());
                    values.add( el.getElementsByTagName("value").item(0).getTextContent());
                    //System.out.println(el.getElementsByTagName("value").item(0).getTextContent());
                }
            }
        }
    }

This will add all the values into ArrayLists and then you can access them however you want. Or you can print them like the comments I left.

Upvotes: 1

Related Questions