Android 开发工具类 13_ SaxService

网络 xml 解析方式

package com.example.dashu_saxxml;

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

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

import org.xml.sax.InputSource;
import org.xml.sax.SAXParseException;

public class SaxService {
    public SaxService() {
    }

    /**
     * 网络xml解析方式
     * */
    public static List<HashMap<String, String>> readXML(
            InputStream inputStream, String nodeName) {
        List<HashMap<String, String>>list=null;
        try {
            //创建一个解析xml工厂对象
            SAXParserFactory saxParserFactory=SAXParserFactory.newInstance();
            SAXParser parser=saxParserFactory.newSAXParser();//解析xml
            MyHandler myHandler=new MyHandler(nodeName);
            parser.parse(inputStream, myHandler);
            list=myHandler.getList();
            inputStream.close();//关闭io
        } catch (Exception e) {
            // TODO: handle exception
        }
        return list;
    }
}

MyHandler 继承 DefaultHandler 解析工具类

package com.example.dashu_saxxml;

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

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

import android.R.integer;

public class MyHandler extends DefaultHandler {
    private HashMap<String, String> map = null;// 存储单个解析的完整对象
    List<HashMap<String, String>> list = null;// 存储所以的解析对象
    private String currentTag = null;// 正在解析元素的标签
    private String currentValue = null;// 正在解析元素的值
    private String nodeName = null;// 当前解析节点名称

    public MyHandler(String nodeName) {
        super();
        this.nodeName = nodeName;
    }

    public List<HashMap<String, String>> getList() {
        return list;
    }

    /**
     * xml文件开始解析时候调用的方法
     * */
    @Override
    public void startDocument() throws SAXException {
        // TODO Auto-generated method stub
        list = new ArrayList<HashMap<String, String>>();
        super.startDocument();
    }

    /**
     * 解析到节点开头调用方法<name>
     * */
    @Override
    public void startElement(String uri, String localName, String qName,
            Attributes attributes) throws SAXException {
        // TODO Auto-generated method stub
        if (qName.equals(nodeName)) {
            map = new HashMap<String, String>();
        }
        if (attributes != null && map != null) {
            for (int i = 0; i < attributes.getLength(); i++) {
                map.put(attributes.getQName(i), attributes.getValue(i));
            }
        }
        currentTag = qName;
    }

    /**
     * 解析到节点开头结尾中间夹的文字所调用的方法
     * */
    @Override
    public void characters(char[] ch, int start, int length)
            throws SAXException {
        // TODO Auto-generated method stub
        if (currentTag != null && map != null) {
            currentValue = new String(ch, start, length);
            if (currentValue != null && !currentValue.trim().equals("")
                    && !currentValue.trim().equals("
")) {
                map.put(currentTag, currentValue);
            }
        }
        currentTag = null;// 把当前节点对应的值和标签设置为空
        currentValue = null;
    }

    /**
     * 解析到节点结尾调用方法</name>
     * */
    @Override
    public void endElement(String uri, String localName, String qName)
            throws SAXException {
        // 遇到结束标记时候
        if (qName.equals(nodeName)) {
            list.add(map);
            map = null;
        }
    }
}

dashu.xml

<?xml version="1.0" encoding="UTF-8"?>
<user-list>
    <user id="1">
        <name>大树</name>
        <age>22</age>
    </user>
    
    <user id="2">
        <name>梅子</name>
        <age>28</age>
    </user>

    <user id="3">
        <name>爸爸</name>
        <age>48</age>
    </user>
    
    <user id="4">
        <name>妈妈</name>
        <age>48</age>
    </user>
</user-list>

 【参考文献】

http://blog.csdn.net/u010794950/article/details/24553733