使用pull解析xml

測試工程目錄：

要解析的xml（person.xml）文件：（在MyEclipse的web測試工程裏部署）

<?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類庫，http://yunpan.cn/cA7m8Y2CzN9Ah  提取碼 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適用，因爲android本身就是用這個方法解析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
	 *            從服務器獲取xml文件，以流的方式返回
	 * @param encode
	 *            編碼格式
	 * @return
	 * @throws Exception
	 */
	public List<Person> paserXml(InputStream inputStream, String encode)
			throws Exception {
		List<Person> list = null;
		Person person = null;
		// 創建一個xml解析工廠
		XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
		// 獲得xml解析類的對象
		XmlPullParser parser = factory.newPullParser();
		parser.setInput(inputStream, encode);	//設置解析對象要解析的流，就流的編碼
		// 獲得事件類型
		int eventType = parser.getEventType();
		while (eventType != XmlPullParser.END_DOCUMENT) {
			switch (eventType) {
			case XmlPullParser.START_DOCUMENT:	//文檔開頭
				list = new ArrayList<Person>();
				break;
			case XmlPullParser.START_TAG:		//遇到開始標籤
				if ("person".equals(parser.getName())) {
					person = new Person();
					int id = Integer.parseInt(parser.getAttributeValue(0));//開始標籤的屬性
					person.setId(id);
				} else if ("name".equals(parser.getName())) {	//內容標籤
					String name = parser.nextText();			//獲取節點的內容
					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();	//循環條件
		}
		return list;
	}

}

從服務器獲取xml文件HttpUtils.java：

package com.pull.http;

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

public class HttpUtils {
	/**
	 * 傳入路徑url
	 * @param path
	 * @return
	 */
	public static InputStream getXml(String path) {
		InputStream inputStream = null;
		try {
			URL url = new URL(path);	//路徑轉化爲url
			//通過在 URL 上調用 openConnection 方法創建連接對象。
			HttpURLConnection conn = (HttpURLConnection) url.openConnection();	
			conn.setRequestMethod("GET");	//設置請求方式
			conn.setReadTimeout(3000);
			conn.setDoInput(true);	//服務器到客戶端可輸入流（不知道怎麼說）
			int responseCode = conn.getResponseCode();	//獲取服務器響應代碼
			if(responseCode == 200){
				inputStream = conn.getInputStream();	//獲取輸入流形式的xml
				return inputStream;
			}
		} catch (Exception e) {
			// TODO: handle exception
		}
		return null;
	}
}

測試一下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";//寫入自己的IP地址，這個不用說吧！
		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());
		}

	}
}

測試結果：