Get child from an element by name : DOM Element « XML « Java

1. Java
2. XML
3. DOM Element

Get child from an element by name

    

import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {
  public static String getChildContent(Element parent, String name, String missing, String empty) {
    Element child = getChild(parent, name);
    if (child == null) {
      return missing;
    } else {
      String content = (String) getContent(child);
      return (content != null) ? content : empty;
    }
  }

  public static Object getContent(Element element) {
    NodeList nl = element.getChildNodes();
    StringBuffer content = new StringBuffer();
    for (int i = 0; i < nl.getLength(); i++) {
      Node node = nl.item(i);
      switch (node.getNodeType()) {
      case Node.ELEMENT_NODE:
        return node;
      case Node.CDATA_SECTION_NODE:
      case Node.TEXT_NODE:
        content.append(node.getNodeValue());
        break;
      }
    }
    return content.toString().trim();
  }

  public static Element getChild(Element parent, String name) {
    for (Node child = parent.getFirstChild(); child != null; child = child.getNextSibling()) {
      if (child instanceof Element && name.equals(child.getNodeName())) {
        return (Element) child;
      }
    }
    return null;
  }
}

   
    
    
    
  

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