Java: DocumentBuilderFactory 호출 XML 메소드 인스턴스

먼저 제공: DOM 해석기를 받은 공장 인스턴스 DocumentBuilderFactory domfac=DocumentBuilderFactory.newInstance();
그리고 DOM 공장에서 DOM 해상도를 가져옵니다.
 DocumentBuilder dombuilder=domfac.newDocumentBuilder();
 
) 해석할 XML 문서를 DOM 해석기가 해석할 수 있도록 입력 흐름으로 변환
InputStream is= new  FileInputStream("test1.xml");        
(4) XML 문서의 입력 흐름을 분석하여 Document를 가져옵니다.
 Document doc=dombuilder.parse(is);
(5) XML 문서의 루트 노드 가져오기
Element root=doc.getDocumentElement();
(6) 노드의 하위 노드 얻기
  NodeList books=root.getChildNodes();

package com.st.demo;   

import java.io.File;   
import java.io.FileInputStream;   
import java.io.InputStream;   

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 XmlReader {   
    public static void main(String[] args) {   
        XmlReader reader = new XmlReader();   
    }   
    public XmlReader(){   
        DocumentBuilderFactory domfac = DocumentBuilderFactory.newInstance();   
        try {   
            DocumentBuilder domBuilder = domfac.newDocumentBuilder();   
            InputStream is = new FileInputStream(new File("D:/test1.xml"));   
            Document doc = domBuilder.parse(is);   
            Element root = doc.getDocumentElement();   
            NodeList books = root.getChildNodes();   
            if(books!=null){   
                for (int i = 0; i < books.getLength(); i++) {   
                    Node book = books.item(i);   
                     if(book.getNodeType()==Node.ELEMENT_NODE) {   
                            //（7）    
                            String email=book.getAttributes().getNamedItem("email").getNodeValue();   
                            System.out.println(email);   
                            // ， 。 Node.ELEMENT_NODE   
                            //（8）    
                            for(Node node=book.getFirstChild();node!=null;node=node.getNextSibling()) {   
                                if(node.getNodeType()==Node.ELEMENT_NODE) {   
                                    if(node.getNodeName().equals("name")) {   
                                        String name=node.getNodeValue();   
                                        String name1=node.getFirstChild().getNodeValue();   
                                        System.out.println(name);   
                                        System.out.println(name1);   
                                    }   
                                    if(node.getNodeName().equals("price")) {   
                                        String price=node.getFirstChild().getNodeValue();   
                                        System.out.println(price);   
                                    }   
                                }   
                            }   
                     }   
                }   
            }   
        } catch (Exception e) {   
            // TODO Auto-generated catch block   
            e.printStackTrace();   
        }   

    }   
}