Android 采用DOM解析XML内容 【学习记录】

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 com.android.mldn.domain.Person;

public class DOMPersonService {

/**

* 采用DOM解析XML内容

*/

public static List<Person> getPersons(InputStream inStream)

throws Throwable{

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

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

DocumentBuilder builder = factory.newDocumentBuilder();

//对xml 文件进行解析

Document document = builder.parse(inStream);

//得到元素的根节点

Element root = document.getDocumentElement();

//得到person 节点

NodeList personNodes = root.getElementsByTagName("person");

//遍历内部节点元素

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

//创建一个person 实例

Person person = new Person();

Element personElement = (Element) personNodes.item(i);

//查找 名称为 id 的元素节点

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

//读取 子节点

NodeList personChilds = personElement.getChildNodes();

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

//判断当前节点是否是元素类型节点

if (personChilds.item(j).getNodeType() == Node.ELEMENT_NODE) {

Element childElement = (Element)personChilds.item(j);

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

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

}else if ("age".equals(childElement.getNodeName())) {

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

}

}

}

persons.add(person);

}

return persons;

}

}