编程用JAVA解析XML的方式

答：用SAX 方式解析XML，XML 文件如下：
<?xml version=”1.0″ encoding=”gb2312″?>

王小明
信息学院
6258113
男,1955 年生,博士，95 年调入海南大学

事件回调类SAXHandler.java ：
import java.io.*;
import java.util.Hashtable;
import org.xml.sax.*;
第28 页共59 页
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:





<%@ 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();
第29 页共59 页
SAXHandler handler = new SAXHandler();
sp.parse(new InputSource(reader), handler);
Hashtable hashTable = handler.getTable();
out.println(“”);
out.println(“” + “”);
out.println(“” + “”);
out.println(“” + “”);
out.println(“” + “”);
out.println(“

” +
“教师信息表

姓名	” + (String)hashTable.get(new String(“name”)) + “
学院	” + (String)hashTable.get(new String(“college”)) +”
电话	” + (String)hashTable.get(new String(“telephone”)) + “
备注	” + (String)hashTable.get(new String(“notes”)) + “

”);
%>