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POIterating a NodeList consisting some tags with same name using DOM
 

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  1. POIterating a NodeList consisting some tags with same name using DOM
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    <p>I'm trying to read in an XML using DOM in Java</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;record&gt; &lt;user&gt; &lt;name&gt;Leo&lt;/name&gt; &lt;email&gt;****@****.com&lt;/email&gt; &lt;food-list&gt; &lt;food&gt;Hamburgers&lt;/food&gt; &lt;food&gt;Fish&lt;/food&gt; &lt;/food-list&gt; &lt;/user&gt; &lt;/record&gt; </code></pre> <p>My current solution is </p> <pre><code> for (int userNumber = 0; userNumber &lt; 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 &lt; 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(); </code></pre> <p>And the output now is</p> <pre><code>name : Leo email : ******@*****.com food : food : null food : food : null food : </code></pre> <p>Which quite confuses me. Could you tell me where I'm wrong? The number of food tags is not pre-defined.</p>
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    1. COCan you check `foodNode.getNodeType()` in your loop?
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    2. CONodeList foodList = userEntryElement.getElementsByTagName("food-list").getChildNodes(); and Node foodNode = foodList.item(i); if(fooNode.getNodeType() == Node.ELEMENT_NODE) { Element userEntryElement = (Element) foodNode ; foodNode.getNodeValue()}
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    3. CO@O.R.Mapper If I check `foodNode.getNodeType == Node.Element_Node` before in the for loop before printing, I get two null output
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