Skip to content
- <?xml version=“1.0”?>
- <students>
- <student>
- <name>John</name>
- <grade>B</grade>
- <age>12</age>
- </student>
- <student>
- <name>Mary</name>
- <grade>A</grade>
- <age>11</age>
- </student>
- <student>
- <name>Simon</name>
- <grade>A</grade>
- <age>18</age>
- </student>
- </students>
- package net.viralpatel.java.xmlparser;
- import java.io.File;
- import javax.xml.parsers.DocumentBuilder;
- import javax.xml.parsers.DocumentBuilderFactory;
- import org.w3c.dom.Document;
- import org.w3c.dom.Element;
- import org.w3c.dom.Node;
- import org.w3c.dom.NodeList;
- public class XMLParser {
- public void getAllUserNames(String fileName) {
- try {
- DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
- DocumentBuilder db = dbf.newDocumentBuilder();
- File file = new File(fileName);
- if (file.exists()) {
- Document doc = db.parse(file);
- Element docEle = doc.getDocumentElement();
-
- System.out.println(“Root element of the document: “
- + docEle.getNodeName());
- NodeList studentList = docEle.getElementsByTagName(“student”);
-
- System.out
- .println(“Total students: “ + studentList.getLength());
- if (studentList != null && studentList.getLength() > 0) {
- for (int i = 0; i < studentList.getLength(); i++) {
- Node node = studentList.item(i);
- if (node.getNodeType() == Node.ELEMENT_NODE) {
- System.out
- .println(“=====================”);
- Element e = (Element) node;
- NodeList nodeList = e.getElementsByTagName(“name”);
- System.out.println(“Name: “
- + nodeList.item(0).getChildNodes().item(0)
- .getNodeValue());
- nodeList = e.getElementsByTagName(“grade”);
- System.out.println(“Grade: “
- + nodeList.item(0).getChildNodes().item(0)
- .getNodeValue());
- nodeList = e.getElementsByTagName(“age”);
- System.out.println(“Age: “
- + nodeList.item(0).getChildNodes().item(0)
- .getNodeValue());
- }
- }
- } else {
- System.exit(1);
- }
- }
- } catch (Exception e) {
- System.out.println(e);
- }
- }
- public static void main(String[] args) {
- XMLParser parser = new XMLParser();
- parser.getAllUserNames(“c:\\test.xml”);
- }
- }