sax xml

 

<?xml version="1.0" encoding="gb2312"?>
<student>
    <person age="25"><!--如果没有age属性，默认的为20-->
        <name>崔卫兵</name>
        <college>PC学院</college>
        <telephone>62354666</telephone>
        <notes>男,1982年生,硕士，现就读于北京邮电大学</notes>
    </person>
    <person>
        <name>cwb</name>
        <college leader="leader1">PC学院</college><!--如果没有leader属性，默

认的为leader-->
        <telephone>62358888</telephone>
        <notes>男,1987年生,硕士，现就读于中国农业大学</notes>
    </person>
    <person age="45">
        <name>xxxxx</name>
        <college leader="学院领导">xxx学院</college>
        <telephone>66666666</telephone>
        <notes>注视中，注释中</notes>
    </person>
</student>

package com.saxm.Test;

import java.util.HashMap;

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

public class SAXHandler extends DefaultHandler {

 //存放所有的节点（这里的节点等于原来的节点+编号）以及它所对应的值
   private HashMap<String,String> hashMap = new HashMap<String,String>();
   //目前的节点
   private String currentElement = null;
   //目前节点所对应的值
   private String currentValue = null;
   //用于节点编号（具体到person）
   private static int i=-1;
 
   public HashMap getHashMap() {
     return hashMap;
   }
 
   public void characters(char[] ch, int start, int length) throws SAXException {
     //取出目前节点对应的值
     currentValue = new String(ch, start, length);
   }
 
   public void startElement(String uri, String localName, String qName,
                            Attributes attr) throws SAXException {
     if(qName.equalsIgnoreCase("student")){
       //currentElement= "";
     }else if (qName.equalsIgnoreCase("person")){
       i++;
       //currentElement= "";
       String age=attr.getValue("age");
       if(age!=null){
        hashMap.put(qName+"-age"+i, age);
       }else{
        hashMap.put(qName+"-age"+i, "20");
       }
     }else if (qName.equalsIgnoreCase("college")){
         currentElement= qName;
         String leader=attr.getValue("leader");
         if(leader!=null){
          hashMap.put(qName+"-leader"+i, leader);
         }else{
          hashMap.put(qName+"-leader"+i, "leader");
         }
     }else{
       currentElement= qName;
     }
 
   }
 
   public void endElement(String uri, String localName, String qName) throws SAXException {
     if (qName.equalsIgnoreCase("student")){
//       hashMap.put(currentElement, currentValue);
     }else if (qName.equalsIgnoreCase("person")){
 
     }else{
       currentElement+=i;
       hashMap.put(currentElement, currentValue);
     }
   }
 }

 

 

package com.saxm.Test;

import java.io.File;
import java.util.HashMap;

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

public class TestSAXHandler {

 

public static void main(String[] args) {
 try{
       //初始化与解析
       SAXHandler handler = new SAXHandler();
       SAXParserFactory saxparserfactory = SAXParserFactory.newInstance();
       SAXParser saxparser = saxparserfactory.newSAXParser();
       saxparser.parse(new File("E:\\prjects\\SaxXml\\src\\studentInfo.xml"), handler);

       //解析完后获取解析信息
       HashMap hashMap = handler.getHashMap();
       System.out.println("姓名\t年龄\t学院\t学院领导\t电话\t\t备注");
       for(int i=0;i<hashMap.size();i+=6){
         int j=i/6;
         System.out.print(hashMap.get("name"+j)+"\t");
         System.out.print(hashMap.get("person-age"+j)+"\t");
         System.out.print(hashMap.get("college"+j)+"\t");
         System.out.print(hashMap.get("college-leader"+j)+"\t");
         System.out.print(hashMap.get("telephone"+j)+"\t");
         System.out.println(hashMap.get("notes"+j)+"\t");
       }
     }catch(Exception ex){
       ex.printStackTrace();
     }

}
}