SaxXML解析

//sax解析的帮助类

package com.bai.saxxml;

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

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

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

import com.bai.saxxml.bean.Book;

public class SaxHander extends DefaultHandler {
 private SAXParser parser;
 private List<Book> bookList;
 private Book book;
 private String type;

 public List<Book> handler(InputStream f, SaxHander aa) {
  SAXParserFactory sax = SAXParserFactory.newInstance();
  try {
   parser = sax.newSAXParser();
   parser.parse(f, aa);

  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return bookList;
 }

 @Override
 public void startDocument() throws SAXException {
  bookList = new ArrayList<Book>();
  // TODO Auto-generated method stub
  super.startDocument();
 }

 // 开始元素解析
 @Override
 public void startElement(String uri, String localName, String qName,
   Attributes attributes) throws SAXException {
  if ("Book".equals(qName)) {
   book = new Book();
  }
  type = qName;
  // TODO Auto-generated method stub
  super.startElement(uri, localName, qName, attributes);
 }

 @Override
 public void endDocument() throws SAXException {
  // TODO Auto-generated method stub
  super.endDocument();
 }

 // 结束元素解析
 @Override
 public void endElement(String uri, String localName, String qName)
   throws SAXException {
  if ("Book".equals(qName)) {
   bookList.add(book);
  }
  type = null;
  // TODO Auto-generated method stub
  super.endElement(uri, localName, qName);
 }

 @Override
 public void characters(char[] ch, int start, int length)
   throws SAXException {
  String data = new String(ch, start, length);
  if ("name".equals(type)) {
   book.setName(data);
  } else if ("price".equals(type)) {
   book.setJiage(data);
  } else if ("author".equals(type)) {
   book.setAuthor(data);
  }
  // TODO Auto-generated method stub
  super.characters(ch, start, length);
 }
}

主类中的写法

package com.bai.saxxml;

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

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import com.bai.saxxml.bean.Book;

public class MainActivity extends Activity {

 private TextView tv;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  tv = (TextView) findViewById(R.id.textView1);

 }

 public void butt(View v) {
  try {
   SaxHander sax = new SaxHander();
   InputStream f = getAssets().open("Books.xml");
   List<Book> list = sax.handler(f, sax);
   tv.setText(list.toString());
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

}