Sax解析结合Xpath的用法

package sax;

import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;

public class SAXReaderUtil {
	public static List<BookModel> saxXMLData() {
		SAXReader saxReader = new SAXReader();
		List<BookModel> bookModelList = new ArrayList<BookModel>();
		try {
			FileInputStream fis = new FileInputStream("F:/WorkSpeace/TestDemo/WebRoot/WEB-INF/classes/books.xml");
			Document doc = saxReader.read(fis);
			List result = doc.selectNodes("//books/book");
			for (Object object : result) {
				BookModel bookModel = new BookModel();
				Node node = (Node) object;
				String id = node.valueOf("@id");
				bookModel.setId(id);
				String name = node.valueOf("name");
				bookModel.setName(name);
				Node imageNode = node.selectSingleNode("image");
				if (imageNode != null) {
					List imageURLList = imageNode.selectNodes("image_url");
					List<String> imageURLListTemp = new ArrayList<String>();
					for (Object object2 : imageURLList) {
						Node imageURLNode = (Node) object2;
						String image_url = imageURLNode.getText();
						imageURLListTemp.add(image_url);
					}
					bookModel.setImageURLList(imageURLListTemp);
				}
				bookModelList.add(bookModel);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return bookModelList;
	}
	public static void main(String[] args) {
		List<BookModel> bookModelList = saxXMLData();
		for (BookModel bookModel : bookModelList) {
			System.out.println(bookModel.getId());
			System.out.println(bookModel.getName());
			List<String> imageList = bookModel.getImageURLList();
			if (imageList != null && imageList.size() > 0) {
				for (String string : imageList) {
					System.out.println(string);
				}
			}
			System.out.println("=================");
		}
	}
}

<?xml version="1.0" encoding="GB2312"?>
<books>
	<book id="1">
		<name>Thinking in JAVA</name>
		<image>
			<image_url>http://www.coojin.com</image_url>
			<image_url>http://shop.coojin.com</image_url>
			<image_url>http://car.coojin.com</image_url>
		</image>
	</book>
	<book id="2">
		<name>Core JAVA2</name>
	</book>
	<book id="3">
		<name>C++ primer</name>
	</book>
</books>

要导入三个jar包：
jaxen-full.jar
saxpath.jar
dom4j-1.6.1.jar

评论

1 楼 409693935 2010-07-08  

dom4j不是用sax方式解析xml的，dom4j和jdom都是将整个xml读入内存，处理不了大的xml文件