XML文件读取(DOM方法)_JAVA_编程开发_程序员俱乐部

XML内容（放入项目中）

class="java" name="code">
<?xml version="1.0" encoding="UTF-8"?>	

	<bookstore>
		<book id="1">
			<name>冰与火之歌</name>
			<author>乔治马丁</author>
			<year>2014</year>
			<price>89</price>
		</book>
		<book id="2">
			<name>安徒生童话</name>
			<year>2004</year>
			<price>77</price>		
			<language>English</language>
		</book>
	</bookstore>

代码实现

import java.awt.print.Book;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;



public class XmlDOM {
    public static void main(String[] args) {
        DocumentBuilderFactory dbf =  DocumentBuilderFactory.newInstance();
      try {
        DocumentBuilder builder = dbf.newDocumentBuilder();
        Document document =  builder.parse("xml/001.xml");
        //nodeList获取所有节点的集合
        
        
        NodeList nodeList = document.getElementsByTagName("book");
       //便利每一个book节点
        for(int i=0;i<nodeList.getLength();i++){
            System.out.println("------------------------------------------j第" + (i+1) + "本书信息");
             //获取book节点
            Node book = nodeList.item(i);
          /*  //获取到书的所有信息
            NamedNodeMap bookMap = book.getAttributes();
            //遍历
            for(int n=0;n<bookMap.getLength();n++){
             Node attr =   bookMap.item(n);
            //获取属性名/获取属性值
            System.out.println("属性名："+attr.getNodeName() + "" + "属性值:" + attr.getNodeValue());
            }*/
            
            NodeList childNodes = book.getChildNodes();
            for(int j=0;j<childNodes.getLength();j++){
                //区分出text类型的node以及element类型的node
                if(childNodes.item(j).getNodeType() == Node.ELEMENT_NODE){
                    //获取了Element节点的节点名
                    System.out.println(childNodes.item(j).getNodeName() + "=" + childNodes.item(j).getTextContent());
                }
               
            }
        }
        
    } catch (ParserConfigurationException e) {
        e.printStackTrace();
    } catch (SAXException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    }
}

执行结果：

------------------------------------------j第1本书信息
name=冰与火之歌
author=乔治马丁
year=2014
price=89
------------------------------------------j第2本书信息
name=安徒生童话
year=2004
price=77
language=English