java dom解析xml

java dom解析xml

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import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.NodeList;

public class FileTest {

/**

* @param args

*/

public static void main(String[] args) {

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

try {

DocumentBuilder db = dbf.newDocumentBuilder();

Document doc = db.parse("d:/test.xml");

//得到根节点

Element root = doc.getDocumentElement();

NodeList nl = root.getElementsByTagName("HLR");

Element e = (Element) nl.item(0);

String hlrId=e.getAttribute("HlrId");

System.out.println(hlrId);

}catch(Exception e){

e.printStackTrace();

}

}

}