sax解析xml案例二

ljq.xml文件

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

   

Person实体类

package com.ljq.service;

public class Person {

    private Integer id;
    private String name;
    private Short age;

    public Person() {
    }
    
    public Person(String name, Short age) {
        super();
        this.name = name;
        this.age = age;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Short getAge() {
        return age;
    }

    public void setAge(Short age) {
        this.age = age;
    }

}

  

XMLContentHandler

package com.ljq.service;

import java.util.ArrayList;
import java.util.List;

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


public class XMLContentHandler extends DefaultHandler {
    private List<Person> persons;
    private Person person;
    private String preTag;
    
    
    @Override
    public void startDocument() throws SAXException {
        persons = new ArrayList<Person>();
    }
    
    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        if (person!=null){
            String date = new String(ch,start,length);
            if ("name".equals(preTag)) {
                person.setName(date);
            }else if ("age".equals(preTag)) {
                person.setAge(new Short(date));
            }
        }
    }
    
    @Override
    public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException {
        if ("person".equals(localName)) {
            person= new Person();
            person.setId(attributes.getIndex("id"));
        }
        preTag = localName;
    }
    
    @Override
    public void endElement(String uri, String localName, String name) throws SAXException {
        if (person !=null && "person".equals(localName)) {
            persons.add(person);
            person = null;
        }
        preTag = null;
    }

    public List<Person> getPersons() {
        return persons;
    }
    
}

   

SaxPersonService

package com.ljq.service;

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

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

import android.util.Log;

public class SaxPersonService {
    // 业务层要对外抛出
    public static List<Person> readXML(InputStream inStream) throws Exception {
        SAXParserFactory spf = SAXParserFactory.newInstance();
        SAXParser saxParser = spf.newSAXParser(); // 创建解析器
        // 设置解析器的相关特性，http://xml.org/sax/features/namespaces = true
        // 表示开启命名空间特性
        // saxParser.setProperty("http://xml.org/sax/features/namespaces",true);
        XMLContentHandler handler = new XMLContentHandler();
        saxParser.parse(inStream, handler);
        inStream.close();
        return handler.getPersons();
    }

}

    

SaxPersonServiceTest

package com.ljq.service;

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

import android.test.AndroidTestCase;
import android.util.Log;

public class SaxPersonServiceTest extends AndroidTestCase{
    private final String TAG = "SaxPersonServiceTest";
    public void testReadXML() throws Exception{
        InputStream inputStream = SaxPersonServiceTest.class.getClassLoader().getResourceAsStream("ljq.xml");
        List<Person> persons = SaxPersonService.readXML(inputStream);
        for(Person person : persons){
           Log.i(TAG, person.getId() + " : " + person.getName() + " : " + person.getAge());
        }
    }
}