1 # 大 中 小 发表于 2008-05-19 21:30:17 
用SAX方式解析XML，XML文件如下： 
<?xml version="1.0" encoding="gb2312"?> 
<person> 
  <name>王小明</name> 
  <college>信息学院</college>   
  <telephone>6258113</telephone> 
  <notes>男,1955年生,博士，95年调入海南大学</notes> 
 </person>


事件回调类SAXHandler.java
import java.io.*;
import java.util.Hashtable;
import org.xml.sax.*;

public class SAXHandler extends HandlerBase {
  private Hashtable table = new Hashtable();

  private String currentElement = null;

  private String currentValue = null;

  public void setTable(Hashtable table) {
    this.table = table;
  }

  public Hashtable getTable() {
    return table;
  }

  public void startElement(String tag, AttributeList attrs) throws SAXException {
    currentElement = tag;
  }

  public void characters(char[] ch, int start, int length) throws SAXException {
    currentValue = new String(ch, start, length);
  }

  public void endElement(String name) throws SAXException {
    if (currentElement.equals(name))
      table.put(currentElement, currentValue);
  }
}
JSP内容显示源码,SaxXml.jsp
<HTML> 
<HEAD> 
<TITLE>剖析XML文件people.xml</TITLE> 
</HEAD> 
<BODY> 
<%@ page errorPage="ErrPage.jsp" 
contentType="text/html;charset=GB2312" %> 
<%@ page import="java.io.*" %> 
<%@ page import="java.util.Hashtable" %> 
<%@ page import="org.w3c.dom.*" %> 
<%@ page import="org.xml.sax.*" %> 
<%@ page import="javax.xml.parsers.SAXParserFactory" %> 
<%@ page import="javax.xml.parsers.SAXParser" %> 
<%@ page import="SAXHandler" %> 
<% 
File file = new File("c:\\people.xml"); 
FileReader reader = new FileReader(file); 
Parser parser; 
SAXParserFactory spf = SAXParserFactory.newInstance(); 
SAXParser sp = spf.newSAXParser(); 
SAXHandler handler = new SAXHandler(); 
sp.parse(new InputSource(reader), handler); 
Hashtable hashTable = handler.getTable(); 
out.println("<TABLE BORDER=2><CAPTION>教师信息表</CAPTION>"); 
out.println("<TR><TD>姓名</TD>" + "<TD>" + 
  (String)hashTable.get(new String("name")) + "</TD></TR>"); 
out.println("<TR><TD>学院</TD>" + "<TD>" + 
  (String)hashTable.get(new String("college"))+"</TD></TR>"); 
out.println("<TR><TD>电话</TD>" + "<TD>" + 
  (String)hashTable.get(new String("telephone")) + "</TD></TR>"); 
out.println("<TR><TD>备注</TD>" + "<TD>" + 
  (String)hashTable.get(new String("notes")) + "</TD></TR>"); 
out.println("</TABLE>"); 
%> 
</BODY> 
</HTML>
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