使用pull解析xml

测试工程目录：

要解析的xml（person.xml）文件：（在MyEclipse的web测试工程里部署）

<?xml version="1.0" encoding="UTF-8"?>
<persons>
	<person id="23">
		<name>jack</name>
		<age>30</age>
	</person>
	<person id="20">
		<name>rose</name>
		<age>25</age>
	</person>
</persons>

要用到的jar类库，http://yunpan.cn/cA7m8Y2CzN9Ah  提取码 c6eb

Person.java :

package com.pull.domain;

public class Person {
	
	private int id;
	private String name;
	private int age;
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	
	@Override
	public String toString() {
		return "Person [id=" + id + ", name=" + name + ", age=" + age + "]";
	}
}

PullXmlTools.java：解析xml文件

/**
 * android适用，因为android本身就是用这个方法解析xml
 */
package com.pull.parser;

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

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;

import com.pull.domain.Person;

public class PullXmlTools {

	public PullXmlTools() {
		// TODO Auto-generated constructor stub
	}

	/**
	 * @param inputStream
	 *            从服务器获取xml文件，以流的方式返回
	 * @param encode
	 *            编码格式
	 * @return
	 * @throws Exception
	 */
	public List<Person> paserXml(InputStream inputStream, String encode)
			throws Exception {
		List<Person> list = null;
		Person person = null;
		// 创建一个xml解析工厂
		XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
		// 获得xml解析类的对象
		XmlPullParser parser = factory.newPullParser();
		parser.setInput(inputStream, encode);	//设置解析对象要解析的流，就流的编码
		// 获得事件类型
		int eventType = parser.getEventType();
		while (eventType != XmlPullParser.END_DOCUMENT) {
			switch (eventType) {
			case XmlPullParser.START_DOCUMENT:	//文档开头
				list = new ArrayList<Person>();
				break;
			case XmlPullParser.START_TAG:		//遇到开始标签
				if ("person".equals(parser.getName())) {
					person = new Person();
					int id = Integer.parseInt(parser.getAttributeValue(0));//开始标签的属性
					person.setId(id);
				} else if ("name".equals(parser.getName())) {	//内容标签
					String name = parser.nextText();			//获取节点的内容
					person.setName(name);
				} else if ("age".equals(parser.getName())) {
					int age = Integer.parseInt(parser.nextText());
					person.setAge(age);
				}
				break;
			case XmlPullParser.END_TAG:
				if ("person".equals(parser.getName())) {
					list.add(person);
					person = null;
				}
				break;
			}
			eventType = parser.next();	//循环条件
		}
		return list;
	}

}

从服务器获取xml文件HttpUtils.java：

package com.pull.http;

import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpUtils {
	/**
	 * 传入路径url
	 * @param path
	 * @return
	 */
	public static InputStream getXml(String path) {
		InputStream inputStream = null;
		try {
			URL url = new URL(path);	//路径转化为url
			//通过在 URL 上调用 openConnection 方法创建连接对象。
			HttpURLConnection conn = (HttpURLConnection) url.openConnection();	
			conn.setRequestMethod("GET");	//设置请求方式
			conn.setReadTimeout(3000);
			conn.setDoInput(true);	//服务器到客户端可输入流（不知道怎么说）
			int responseCode = conn.getResponseCode();	//获取服务器响应代码
			if(responseCode == 200){
				inputStream = conn.getInputStream();	//获取输入流形式的xml
				return inputStream;
			}
		} catch (Exception e) {
			// TODO: handle exception
		}
		return null;
	}
}

测试一下Test.java:

package com.pull.test;

import java.io.InputStream;
import java.util.List;

import com.pull.domain.Person;
import com.pull.http.HttpUtils;
import com.pull.parser.PullXmlTools;

public class Test {

	public static void main(String[] args) {
		String path = "http://140.237.253.221:8080/news/person.xml";//写入自己的IP地址，这个不用说吧！
		InputStream is = HttpUtils.getXml(path);
		PullXmlTools pullXml = new PullXmlTools();
		List<Person> list = null;
		try {
			list = pullXml.paserXml(is, "utf-8");
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		for (Person person : list) {
			System.out.println(person.toString());
		}

	}
}

测试结果：