编程用 JAVA 解析 XML 的方式。

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用 SAX 方式解析 XML，XML 文件如下：

<?xml version="1.0" encoding="gb2312"?>

<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();

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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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