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在jsp中使用SAX

摘要: 在jsp中使用SAX

</td> </tr> <tr> <td height="35" valign="top" class="ArticleTeitle"> 请先将xerces.jar文件放入web应用程序的WEB-INF/lib目录中,再编写处理xml文件的处理器如下:
package example;
import java.io.*;
import java.util.Hashtable;
import org.xml.sax.*;
import org.xml.sax.helpers.*;

public class SAXHandler extends DefaultHandler
{
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 nspaceURI, String localName, String qName, Attributes atts) throws SAXException {
// System.out.println("Starting element: " + localName);
currentElement = localName;
}

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

public void endElement(String namespaceURI, String localName, String qualifiedName) throws SAXException {
// System.out.println("Ending element: " + localName);
if (currentElement.equals(localName))

table.put(currentElement, currentValue); //将元素名和内容放入一个Hashtable

}

}

用下面的jsp代码测试:
<%@ page contentType="text/html; charset=GBK" %>

<head>
剖析XML文件web.xml
</head>
<body>
<%@ page import="org.xml.sax.*" %>
<%@ page import="org.xml.sax.helpers.XMLReaderFactory" %>
<%@ page import="example.SAXHandler" %>
<%@ page import="java.util.*" %>

<% String fi=getServletContext().getRealPath("/")+"dir1\\dir6\\ex.xml";
XMLReader parser = XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
SAXHandler handler = new SAXHandler();
parser.setContentHandler(handler);
parser.parse(fi);
Hashtable hashTable = handler.getTable();
Enumeration e=hashTable.keys();
while(e.hasMoreElements()){
String key=(String)e.nextElement();
out.println(key+": "+hashTable.get(key)+"
");
}

%>
<table width="675" height="26" border="0"> <tr> <td width="357">ex.xml文件如下:
<?xml version="1.0" encoding="GB2312" standalone="no" ?>
booklist [

]>

<书名>一起玩OfficeXP
<定价>580元
<读者交流信箱>&QA-email;

</td> <td width="308"> </td> </tr> </table>

function TempSave(ElementID) { CommentsPersistDiv.setAttribute("CommentContent",document.getElementById(ElementID).value); CommentsPersistDiv.save("CommentXMLStore"); } function Restore(ElementID) { CommentsPersistDiv.load("CommentXMLStore"); document.getElementById(ElementID).value=CommentsPersistDiv.getAttribute("CommentContent"); } </td> </tr> <tr>

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