java解析xml

解析的xml

<?xml version="1.0" encoding="UTF-8"?>
<bookstore>
    <book id="1">
        <name>Java</name>
        <author>Bruce Eckel</author>
        <year>2014</year>
        <price>102</price>
    </book>
    <book id="2">
        <name>JavaScript</name>
        <year>2012</year>
        <price>86</price>
        <language>Chinese</language>
    </book> 
</bookstore>

1.dom解析xml

package www.it.com.parse;

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.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

/**
 * @author wangjie:
 * @version 创建时间：2019年8月30日 上午11:58:03
 * @Description 类描述:
 */
public class DomParseXml {

	public static void main(String[] args) {
		// 创建解析工厂
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		try {
			// 创建文档解析器
			DocumentBuilder documentBuilder = factory.newDocumentBuilder();
			// 文档解析器解析xml获得文档对象
			Document document = documentBuilder.parse("E://book.xml");
			// 通过节点的名字获取节点的集合对象
			NodeList nodeList = document.getElementsByTagName("book");
			System.out.println("==========book节点数" + nodeList.getLength());
			// 循环遍历节点集合
			for (int i = 0; i < nodeList.getLength(); i++) {
				Node item = nodeList.item(i);
				System.out.println("上一级几点" + item.getNodeName());
				// 获得节点的属性
				NodeList childNodes = item.getChildNodes();
				System.out.println("=======" + childNodes.getLength());
				for (int j = 1; j < childNodes.getLength(); j++) {
					Node childNode = childNodes.item(j);
					// 12.区分出text类型和element类型的node
					if (childNode.getNodeType() == Node.ELEMENT_NODE) {
						System.out.println("book节点下面的子节点" + "节点的标签" + childNode.getNodeName() + "节点的内容"
								+ childNode.getTextContent());
					}
				}
			}
		} catch (ParserConfigurationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SAXException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
}