//设置一个可以定位文档内容事件发生位置的定位器对象

public void setDocumentLocator(Locator locator)

//用于处理文档解析开始事件

public void startDocument()throws SAXException

//处理元素开始事件，从参数中可以获得元素所在名称空间的uri，元素名称，属性类表等信息

public void startElement(String namespacesURI , String localName , String qName , Attributes atts) throws SAXException

//处理元素结束事件，从参数中可以获得元素所在名称空间的uri，元素名称等信息

public void endElement(String namespacesURI , String localName , String qName) throws SAXException

//处理元素的字符内容，从参数中可以获得内容

public void characters(char[] ch , int start , int length) throws SAXException

//注册处理XML文档解析事件ContentHandler
public void setContentHandler(ContentHandler handler)

//开始解析一个XML文档
public void parse(InputSorce input) throws SAXException

SAXParserFactory factory = SAXParserFactory.newInstance();

SAXParser parser = factory.newSAXParser();

XMLReader reader = parser.getXMLReader();

RSSHandler handler = new RSSHandler();
reader.setContentHandler(handler);

parser.parse(is);

<?xml version="1.0" encoding="UTF-8"?>
  <channel>
    <title>RSS 解析练习</title>
    <description>hehehaha</description>
    <link>http://www.cnblogs.com/felix-hua/</link>
    <language>zh-cn</language>


    <item>
      <title><![CDATA[头条]]></title>
      <link>http://mc.cz001.com.cn/images/menu/23_active.png</link>
      <category>0</category>
      <description>描述详细信息的</description>
      <pubDate>2012-01-09</pubDate>
    </item>
    
    <item>
      <title><![CDATA[新闻]]></title>
      <link>http://mc.cz001.com.cn/images/menu/23_active.png</link>
      <category>0</category>
      <description>描述详细信息的</description>
      <pubDate>2012-01-09</pubDate>
    </item>
    
    <item>
      <title><![CDATA[首页]]></title>
      <link>http://mc.cz001.com.cn/images/menu/23_active.png</link>
      <category>0</category>
      <description>描述详细信息的</description>
      <pubDate>2012-01-09</pubDate>
    </item>
    
    <item>
      <title><![CDATA[财经]]></title>
      <link>http://mc.cz001.com.cn/images/menu/23_active.png</link>
      <category>0</category>
      <description>描述详细信息的</description>
      <pubDate>2012-01-09</pubDate>
    </item>

package com.sax.org.entity;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Vector;

public class RSSFeed {
  private String title;
  private int itemcount;
  private List<RSSItem> itemlist;
  
  public RSSFeed(){
    itemlist = new Vector<RSSItem>(0);
  }
  
  /**
   * 负责将一个RSSItem加入到RSSFeed类中
   * @param item
   * @return
   */
  public int addItem(RSSItem item){
    itemlist.add(item);
    itemcount++;
    return itemcount;
  }
  
  public RSSItem getItem(int location){
    return itemlist.get(location);
  }
  
  public List<RSSItem> getAllItems(){
    return itemlist;
  }
  
  /**
   * 负责从RSSFeed类中生成列表所需要的数据
   * @return
   */
  public List getAllItemForListView(){
    List<Map<String, Object>> data = new ArrayList<Map<String,Object>>();
    int size = itemlist.size();
    for(int i=0 ; i<size ; i++){
      HashMap<String , Object> item = new HashMap<String, Object>();
      item.put(RSSItem.TITLE, itemlist.get(i).getTitle());
      item.put(RSSItem.PUBDATE, itemlist.get(i).getPubdate());
      data.add(item);
    }
    return data;
  }

  public String getTitle() {
    return title;
  }

  public void setTitle(String title) {
    this.title = title;
  }

  public int getItemcount() {
    return itemcount;
  }

  public void setItemcount(int itemcount) {
    this.itemcount = itemcount;
  }

  public List<RSSItem> getItemlist() {
    return itemlist;
  }

  public void setItemlist(List<RSSItem> itemlist) {
    this.itemlist = itemlist;
  }
  
}

package com.sax.org.entity;

public class RSSItem {
  public static String TITLE = "title";
  public static String PUBDATE = "pubdate";
  public String title;
  public String description;
  public String link;
  public String category;
  public String pubdate;
  public RSSItem() {
  }
  public String getTitle() {
    return title;
  }
  public void setTitle(String title) {
    this.title = title;
  }
  public String getDescription() {
    return description;
  }
  public void setDescription(String description) {
    this.description = description;
  }
  public String getLink() {
    return link;
  }
  public void setLink(String link) {
    this.link = link;
  }
  public String getCategory() {
    return category;
  }
  public void setCategory(String category) {
    this.category = category;
  }
  public String getPubdate() {
    return pubdate;
  }
  public void setPubdate(String pubdate) {
    this.pubdate = pubdate;
  }
  
  
}

package com.sax.org.handler;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import com.sax.org.entity.RSSFeed;
import com.sax.org.entity.RSSItem;

public class RSSHandler extends DefaultHandler{
  RSSFeed RssFeed;
  RSSItem RssItem;
  final int RSS_TITLE = 1;
  final int RSS_LINK = 2;
  final int RSS_DESCRIPTION = 3;
  final int RSS_CATEGORY = 4;
  final int RSS_PUBDATE = 5;
  int currentstate = 0;
  
  public RSSHandler(){}
  
  public RSSFeed getFeed(){
    return RssFeed;
  }
  
  @Override
  public void startDocument() throws SAXException {
    // TODO Auto-generated method stub
    RssFeed = new RSSFeed();
    RssItem = new RSSItem();
  }
  
  @Override
  public void endDocument() throws SAXException {
    // TODO Auto-generated method stub
    
  }
  
  @Override
  public void startElement(String uri, String localName, String qName,
      Attributes attributes) throws SAXException {
    // TODO Auto-generated method stub
    if(localName.equals("channel")){
      currentstate = 0;
      return;
    }
    if(localName.equals("item")){
      RssItem = new RSSItem();
      return;
    }
    if(localName.equals("title")){
      currentstate = RSS_TITLE;
      return;
    }
    if(localName.equals("description")){
      currentstate = RSS_DESCRIPTION;
      return;
    }
    if(localName.equals("link")){
      currentstate = RSS_LINK;
      return;
    }
    if(localName.equals("category")){
      currentstate = RSS_CATEGORY;
      return;
    }
    if(localName.equals("pubDate")){
      currentstate = RSS_PUBDATE;
      return;
    }
    currentstate = 0;
  }
  
  @Override
  public void endElement(String uri, String localName, String qName)
      throws SAXException {
    // TODO Auto-generated method stub
    if(localName.equals("item")){
      RssFeed.addItem(RssItem);
      return;
    }
  }
  
  @Override
  public void characters(char[] ch, int start, int length)
      throws SAXException {
    // TODO Auto-generated method stub
    String theString = new String(ch, start, length);
    switch(currentstate){
    case RSS_TITLE:
      RssItem.setTitle(theString);
      currentstate = 0;
      break;
    case RSS_DESCRIPTION:
      RssItem.setDescription(theString);
      currentstate = 0;
      break;
    case RSS_LINK:
      RssItem.setLink(theString);
      currentstate = 0;
      break;
    case RSS_PUBDATE:
      RssItem.setPubdate(theString);
      currentstate = 0;
      break;
    case RSS_CATEGORY:
      RssItem.setCategory(theString);
      currentstate = 0;
      break;
    default:
      return;
    }
  }
}

 package com.sax.org;

import java.io.IOException;
import java.net.URL;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

import com.sax.org.entity.RSSFeed;
import com.sax.org.entity.RSSItem;
import com.sax.org.handler.RSSHandler;

public class SAXReaderActivity extends Activity {
  /** Called when the activity is first created. */

  public String rssUrl = "http://mc.cz001.com.cn/a/indexconfig/index.rss";
  public RSSFeed feed;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    feed = getFeed(rssUrl);
    showList();
  }

  public RSSFeed getFeed(String rssUrl) {
    try {
// 这里我们实现了本地解析，所以注掉了这个取网络数据的。
//      URL url = new URL(rssUrl);
      SAXParserFactory factory = SAXParserFactory.newInstance();
      SAXParser parser = factory.newSAXParser();
      XMLReader reader = parser.getXMLReader();
      RSSHandler handler = new RSSHandler();
      reader.setContentHandler(handler);
      InputSource is = new InputSource(this.getClassLoader().getResourceAsStream("rssxml.xml"));//取得本地xml文件
      reader.parse(is);
      return handler.getFeed();
    } catch (ParserConfigurationException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (SAXException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    return null;
  }

  public void showList() {
    ListView rsslistview = (ListView) findViewById(R.id.rssList);
    TextView rsstitle = (TextView) findViewById(R.id.rsstitle);
    if (feed == null) {
      rsstitle.setText("访问失败...");
      return;
    }
    SimpleAdapter adapter = new SimpleAdapter(this,
        feed.getAllItemForListView(),
        android.R.layout.simple_list_item_2, new String[] {
            RSSItem.TITLE, RSSItem.PUBDATE }, new int[] {
            android.R.id.text1, android.R.id.text2 });
    rsslistview.setAdapter(adapter);
  }
}