Java – How to read the child nodes from XML using DOM or SAX parser in android

androiddomparserjavasaxparserxml-parsing

This is my XML.

<Operations>
<Operation Name="OperationName1">Entity details1</Operation>
<Operation Name="OperationName2">Entity details2</Operation>
<Operation Name="OperationName3">Entity details3</Operation>
<Operation Name="OperationName4">Entity details4</Operation>
</Operations>

In this I need to read each child nodes as a string variable. Using DOM I am trying like this.

NodeList items = root.getElementsByTagName("Operation");

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

            NodeList properties = item.getChildNodes();

            for (int j=0;j<properties.getLength();j++){

                Node property = properties.item(j);

                    }               
         }

Now as for my understand the items is having all the child nodes now I need to store each child node like this.

String ch_node="<Operation Name="OperationName4">Entity details4</Operation>"

Is there any default method that will give me the child node xml or I need to create again with node name,value and atrributes?

I have tried with SAX parser also but do not know how to get.

public void startElement(String uri, String localName, String qName,
        Attributes attributes) throws SAXException {       
    if (qName.equalsIgnoreCase("operation")) {     
        op_Name=attributes.getValue(0);
    }
}

public void characters(char[] ch, int start, int length)
        throws SAXException {        
}

public void endElement(String uri, String localName, String qName)
        throws SAXException {       
}

Best Answer

You can try DOM and Transformer

    Transformer tx = TransformerFactory.newInstance().newTransformer();
    tx.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
    Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new File("1.xml"));
    NodeList list = doc.getElementsByTagName("Operation");
    for (int i = 0; i < list.getLength(); i++) {
        DOMSource src = new DOMSource(list.item(i));
        StringWriter sr = new StringWriter();
        Result res = new StreamResult(sr);
        tx.transform(src, res);
        System.out.println(sr);
    }

output

<Operation Name="OperationName1">Entity details1</Operation>
<Operation Name="OperationName2">Entity details2</Operation>
<Operation Name="OperationName3">Entity details3</Operation>
<Operation Name="OperationName4">Entity details4</Operation>
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