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("\n")) {
                 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