Iterating a NodeList consisting some tags with same name using DOM
dom, java, loops, tags, xml
Solution
((Node) foodNode.getChildNodes().item(0)).getNodeValue()
Note that, as you can clearly see, dealing with the DOM API in Java is pretty painful. Have you looked at JDOM or dom4j?
Problem
I'm trying to read in an XML using DOM in Java ``` <?xml version="1.0"?> <record> <user> <name>Leo</name> <email>****@****.com</email> <food-list> <food>Hamburgers</food> <food>Fish</food> </food-list> </user> </record> ``` My current solution is ``` for (int userNumber = 0; userNumber < masterList.getLength(); userNumber++) { Node singleUserEntry = masterList.item(userNumber); if (singleUserEntry.getNodeType() == Node.ELEMENT_NODE) { org.w3c.dom.Element userEntryElement = (org.w3c.dom.Element) singleUserEntry; System.out.println("name : " + getTagValue("name", userEntryElement)); System.out.println("email : " +getTagValue("email", userEntryElement)); NodeList foodList = userEntryElement.getElementsByTagName("food-list").item(0).getChildNodes(); for(int i = 0; i < foodList.getLength(); i++){ Node foodNode = foodList.item(i); System.out.println("food : " + foodNode.getNodeValue()); } private static String getTagValue(String sTag, org.w3c.dom.Element eElement) { NodeList nlList = eElement.getElementsByTagName(sTag).item(0).getChildNodes(); Node nValue = (Node) nlList.item(0); return nValue.getNodeValue(); ``` And the output now is ``` name : Leo email : ******@*****.com food : food : null food : food : null food : ``` Which quite confuses me. Could you tell me where I'm wrong? The number of food tags is not pre-defined.