[Java开发之路]（12）JDOM和DOM4J解析XML文档

   
SAXBuilder saxBuilder = new SAXBuilder();

   
FileInputStream inputStream = new FileInputStream("D:\\bookstore.xml");

   
Document document = saxBuilder.build(inputStream);

   
Element rootElement = document.getRootElement();

   
List<Element> bookList = rootElement.getChildren();

   
List<Attribute> attrList = book.getAttributes();

   
// 属性名称
node.getName();
// 属性值
node.getValue();

   
// book为Element对象
List<Attribute> attrList = book.getAttributes()

   
Element titleElement = book.getChild("title");

   
// titleElement为title节点
titleElement.getName();

   
titleElement.getValue()

   
<author>Scott Meyers</author>

   
package com.qunar.xml;
 
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;
 
import org.jdom2.Attribute;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.input.SAXBuilder;
 
/**
 * JDOM解析XML文档
 * @author sjf0115
 *
 */
public class JDOMXMLCode {
 
	public static void main(String[] args) {
		try {
			// 创建SAXBuilder对象
			SAXBuilder saxBuilder = new SAXBuilder();
			// 创建输入流对象并将XML文档加载到输入流中
			FileInputStream inputStream = new FileInputStream("D:\\bookstore.xml");
			// 通过saxBuilder对象的build方法将输入流加载到saxBuilder中
			Document document = saxBuilder.build(inputStream);
			// 通过document对象获取XML文档的根节点
			Element rootElement = document.getRootElement();
			// 根据根节点获取根节点下的子节点集合
			List<Element> bookList = rootElement.getChildren();
			// 遍历子节点
			for (Element book : bookList) {
				System.out.println("开始解析一本书...");
				
				// 解析属性
				List<Attribute> attrList = book.getAttributes();
				for (Attribute attribute : attrList) {
					// 属性名称
					System.out.print("---" + attribute.getName() + "：");
					// 属性值
					System.out.println(attribute.getValue());
				}//for
				
				// 获取book节点下的子节点
				List<Element> bookChildren = book.getChildren();
				for (Element bookChild : bookChildren) {
					// 节点名称
					System.out.print("------" + bookChild.getName() + "：");
					// 节点值
					System.out.println(bookChild.getValue());
				}//for
				
				System.out.println("结束解析一本书...");
			}//for
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (JDOMException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

   
SAXReader saxReader = new SAXReader();

   
Document document = saxReader.read(new File("D:\\bookstore.xml"));

   
Element bookstore = document.getRootElement();

   
Iterator iterator = bookstore.elementIterator();

   
while (iterator.hasNext()) {
    // 获取下一个子节点
    Element book = (Element)iterator.next();
}

   
// 获取book的属性节点集合
List<Attribute> bookAttr = book.attributes();
// 遍历book属性节点
for (Attribute attribute : bookAttr) {
   // 获取book的属性节点的属性名称以及属性值
   System.out.println("name：" + attribute.getName() + "   value："  + attribute.getValue());
}//for

   
package com.qunar.xml;
 
import java.io.File;
import java.util.Iterator;
import java.util.List;
 
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
 
public class DOM4JXMLCode {
 
	public static void main(String[] args) {
		try {
			// 创建SAXReader对象
			SAXReader saxReader = new SAXReader();
			// 通过SaxReader对象的read方法加载XML文档获取Document对象
			Document document = saxReader.read(new File("D:\\bookstore.xml"));
			// 通过Document对象获取根节点
			Element bookstore = document.getRootElement();
			// 通过Element对象的elementIterator方法获取迭代器
			Iterator iterator = bookstore.elementIterator();
			// 遍历根节点的子节点
			while (iterator.hasNext()) {
				System.out.println("开始解析一本书...");
				// 获取下一个元素节点
				Element book = (Element)iterator.next();
				// 获取book的属性节点集合
				List<Attribute> bookAttr = book.attributes();
				// 遍历book属性节点
				for (Attribute attribute : bookAttr) {
					// 获取book的属性节点的属性名称以及属性值
					System.out.println("name：" + attribute.getName() + "   value："  + attribute.getValue());
				}//for
				Iterator ite = book.elementIterator();
				// 遍历book节点的子节点
				while(ite.hasNext()){
					// book节点的子节点
					Element bookChild = (Element)ite.next();
					System.out.println("name：" + bookChild.getName() + "   value：" + bookChild.getStringValue());
					//System.out.println("name：" + bookChild.getName() + "   value：" + bookChild.getText());
				}//while
				System.out.println("结束解析一本书...");
			}
		} catch (DocumentException e) {
			e.printStackTrace();
		}
	}
}