Java之DOM4J方式解析XML文件（学习笔记）

使用DOM4J方式解析XML文件，不是java官方提供的方法，所以我们的需要自己导入一个dom4j-1.6.1.jar包，下载地址为：http://download.csdn.net/detail/xx_123_1_rj/8307651

DOM4Jxml.java:

package cn.ytu.dom4j;

import java.io.File;
import java.util.ArrayList;
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 DOM4Jxml {
	private static ArrayList<Book> bookList = new ArrayList<Book>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// 解析books.xml文件
		// 创建SAXReader的对象reader
		SAXReader reader = new SAXReader();
		try {
			// 通过reader对象的read方法加载books.xml文件,获取docuemnt对象。
			Document document = reader.read(new File("xml/books.xml"));
			// 通过document对象获取根节点bookstore
			Element bookStore = document.getRootElement();
			// 通过element对象的elementIterator方法获取迭代器
			Iterator it = bookStore.elementIterator();
			// 遍历迭代器，获取根节点中的信息（书籍）
			while (it.hasNext()) {
				System.out.println("=====开始遍历某一本书=====");
				Element book = (Element) it.next();
				// 获取book的属性名以及 属性值
				List<Attribute> bookAttrs = book.attributes();
				for (Attribute attr : bookAttrs) {
					System.out.println("属性名：" + attr.getName() + "--属性值："
							+ attr.getValue());
				}
				Iterator itt = book.elementIterator();
				while (itt.hasNext()) {
					Element bookChild = (Element) itt.next();
					System.out.println("节点名：" + bookChild.getName() + "--节点值：" + bookChild.getStringValue());
				}
				System.out.println("=====结束遍历某一本书=====");
			}
		} catch (DocumentException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

}

Book.java:

package cn.ytu.dom4j;

public class Book {
	private String id;
	private String name;
	private String author;
	private String year;
	private String price;
	private String language;
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getAuthor() {
		return author;
	}
	public void setAuthor(String author) {
		this.author = author;
	}
	public String getYear() {
		return year;
	}
	public void setYear(String year) {
		this.year = year;
	}
	public String getPrice() {
		return price;
	}
	public void setPrice(String price) {
		this.price = price;
	}
	public String getLanguage() {
		return language;
	}
	public void setLanguage(String language) {
		this.language = language;
	}
	
}

books.xml：

<?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>

运行结果：