使用Java自带SAX工具解析XML

package saxExample;

import java.util.HashMap;
import org.xml.sax.*;
import org.xml.sax.helpers.DefaultHandler;

/**
 * 继承DefaultHandler类，用SAX实现对xml的遍历
 * @author cuiweibing
 * @since 2007.8.8
 */

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 hashMap = new HashMap();
  //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);
    }
  }
} 

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package saxExample;

import java.io.File;
import java.util.HashMap;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.SAXParser;

/**
 * 解析主类
 * @author cuiweibing
 * @since 2007.8.8
 */

public class TestSAXHandler {
  public 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("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        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();
    }
  }
}

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