使用DOM读取XML文件

import java.io.InputStream;

import java.util.ArrayList;

import java.util.List;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import cn.itcast.xml.domain.Person;

/**

* 使用Dom解析xml文件

*

*/

public class DomXMLReader {

public static List<Person> readXML(InputStream inStream) {

List<Person> persons = new ArrayList<Person>();

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

try {

DocumentBuilder builder = factory.newDocumentBuilder();

Document dom = builder.parse(inStream);

Element root = dom.getDocumentElement();

NodeList items = root.getElementsByTagName("person");//ﾲ￩ￕￒￋￓ￐personﾽￚﾵ￣

for (int i = 0; i < items.getLength(); i++) {

Person person = new Person();

//得到第一个person节点

Element personNode = (Element) items.item(i);

//获取person节点的id属性值

person.setId(new Integer(personNode.getAttribute("id")));

//获取person节点下的所有子节点(标签之间的空白节点和name/age元素)

NodeList childsNodes = personNode.getChildNodes();

for (int j = 0; j < childsNodes.getLength(); j++) {

Node node = (Node) childsNodes.item(j); //判断是否为元素类型

if(node.getNodeType() == Node.ELEMENT_NODE){


Element childNode = (Element) node;

//判断是否name元素

if ("name".equals(childNode.getNodeName())) {

//获取name元素下Text节点,然后从Text节点获取数据


person.setName(childNode.getFirstChild().getNodeValue());

} else if (“age”.equals(childNode.getNodeName())) {

person.setAge(new Short(childNode.getFirstChild().getNodeValue()));

}

}

}

persons.add(person);

}

inStream.close();

} catch (Exception e) {

e.printStackTrace();

}

return persons;

}