package com.dom;

import java.io.File;

import java.util.ArrayList;

import java.util.List;

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 DOMExample {

public static void main(String[] args) {

List<Student> listStudents = DOMExample.readListStudents();

for(Student student : listStudents) {

System.out.println(student.toString());

}

}

public static List<Student> readListStudents() {

List<Student> listStudents = new ArrayList<>();

Student student = null;

try {

// /Java-DOM/input.xml

File inputFile = new File("input.xml");

DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();

DocumentBuilder dBuilder;

dBuilder = dbFactory.newDocumentBuilder();

Document doc = dBuilder.parse(inputFile);

doc.getDocumentElement().normalize();

System.out.println("Phan tu goc: " + doc.getDocumentElement().getNodeName());

NodeList nodeListStudent = doc.getElementsByTagName("student");

for(int i = 0; i < nodeListStudent.getLength(); i++) {

student = new Student();

Node nNode = nodeListStudent.item(i);

if(nNode.getNodeType() == Node.ELEMENT_NODE) {

Element eElement = (Element) nNode;

student.setId(eElement.getAttribute("id"));

student.setFirstName(eElement.getElementsByTagName("firstname").item(0).getTextContent());

student.setLastName(eElement.getElementsByTagName("lastname").item(0).getTextContent());

student.setMarks(eElement.getElementsByTagName("marks").item(0).getTextContent());

}

listStudents.add(student);

}

} catch (Exception e) {

e.printStackTrace();

}

return listStudents;

}

}