Android中对XML文件的解析
ContentHandler.java：负责对XML进行处理
/**
?*
?*/
package com.duoguo.content;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
?* @author shyboy(897948924@qq.com)
?*
?*/
public class ContentHandler extends DefaultHandler {
?private String tagName;
?private String name;
?private String sex;
?private int age;
?// 解析XML文档开始部分
?@Override
?public void startDocument() throws SAXException {
??System.out.println("start document");
?}
?// 解析XML文件结束部分
?@Override
?public void endDocument() throws SAXException {
??System.out.println("end document");
?}
?// 解析XML文件元素开始部分
?@Override
?public void startElement(String uri, String localName, String qName,
???Attributes attributes) throws SAXException {
??// System.out.println("start element");
??tagName = localName;
??if ("user".equals(localName)) {
???for (int i = 0; i < attributes.getLength(); i++)// 遍历元素的属性
???{
????System.out.println(attributes.getLocalName(i) + "="
??????+ attributes.getValue(i));
???}
??}
?}
?// 解析XML文件元素结束部分
?@Override
?public void endElement(String uri, String localName, String qName)
???throws SAXException {
??// System.out.println("end element");
??if ("user".equals(localName)) {
???printout();
??}
?}
?// 解析XML文件的元素内容
?@Override
?public void characters(char[] ch, int start, int length)
???throws SAXException {
??// System.out.println("characters");
??if ("name".equals(tagName))// 当解析name元素的内容时
??{
???name = new String(ch, start, length);// 获取name元素的内容
??} else if ("sex".equals(tagName))// 当解析sex元素的内容时
??{
???sex = new String(ch, start, length);// 获取sex元素的内容
??} else if ("age".equals(tagName))// 当解析age元素的内容时
??{
???age = new Integer(new String(ch, start, length));// 获取age元素的内容
??}
?}
?// 打印解析的XML文件的内容
?public void printout() {
??System.out.println("name:" + name);
??System.out.println("sex:" + sex);
??System.out.println("age:" + age);
?}
}
?
XmlActivity.java
package com.duoguo.android;
import java.io.IOException;
import java.io.StringReader;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import com.duoguo.content.ContentHandler;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
/**
?* 解析XML文件
?*
?* @author shyboy(897948924@qq.com)
?*
?*/
public class XmlActivity extends Activity {
?// 声明Button控件
?private Button parseXMLButton;
?@Override
?public void onCreate(Bundle savedInstanceState) {
??super.onCreate(savedInstanceState);
??setContentView(R.layout.main);
??parseXMLButton = (Button) findViewById(R.id.parseXMLId);// 根据空间的ID获取Button空间
??parseXMLButton.setOnClickListener(new ParseXMLButtonClick());// 为Button控件添加单击事件监听器
?}
?// 解析XML文件事件监听器
?class ParseXMLButtonClick implements OnClickListener {
??@Override
??public void onClick(View v) {
???System.out.println("click");
???String xml = "<users><user id='001'><name>shyboy</name><sex>male</sex><age>24</age></user><user id='002'><name>playboy</name><sex>female</sex><age>20</age></user></users>";
???SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();// 实例化SAXParserFactory对象
???try {
????XMLReader xmlReader = saxParserFactory.newSAXParser()
??????.getXMLReader();// 获取XMLReader对象
????xmlReader.setContentHandler(new ContentHandler());// 注册内容事件处理器
????xmlReader.parse(new InputSource(new StringReader(xml)));// 开始解析XML
???} catch (SAXException e) {
????e.printStackTrace();
????Log.d("debug", e.getMessage());
???} catch (ParserConfigurationException e) {
????e.printStackTrace();
????Log.d("debug", e.getMessage());
???} catch (IOException e) {
????e.printStackTrace();
????Log.d("debug", e.getMessage());
???}
??}
?}
}
