JSP SAX Parser : XML « JSP « Java Tutorial






  1. Java Tutorial
  2. JSP
  3. XML

Jsp code

<!--
Sams Teach Yourself JavaServer Pages in 21 Days (Paperback)
by Steven Holzner (Author), Steve Holzner (Author)

# Publisher: Sams; 1st edition (September 19, 2002)
# Language: English
# ISBN-10: 0672324490
# ISBN-13: 978-0672324499
-->

<%@ page import="org.xml.sax.*, org.xml.sax.helpers.DefaultHandler, javax.xml.parsers.*, java.io.*" %>

<%!

javax.servlet.jsp.JspWriter localOut;

public class parser extends DefaultHandler
{
    String indent = "";

    void parse(String name) 
    {
        DefaultHandler handler = this;
        SAXParserFactory factory = SAXParserFactory.newInstance();
        try {
            SAXParser saxParser = factory.newSAXParser();
            saxParser.parse(new File(name), handler);
        } catch (Throwable t) {}
    }

    public void startDocument() throws SAXException
    {
        try{
            localOut.println("&lt;?xml version=\"1.0\" encoding=\""+"UTF-8" + "\"?&gt;<BR>");
        }
        catch(java.io.IOException e){}
    }

    public void endDocument() throws SAXException 
    {
    }

    public void startElement(String namespaceURI, String localName, String qualifiedName, Attributes attrs)
    throws SAXException 
    {
        try{
            String elementName = localName; 
            if ("".equals(elementName)) {
                elementName = qualifiedName; 
            }
            localOut.println(indent + "&lt;" + elementName);
            if (attrs != null) {
                for (int i = 0; i < attrs.getLength(); i++) {
                    String attributeName = attrs.getLocalName(i);  
                    if ("".equals(attributeName)) attributeName = attrs.getQName(i);
                    localOut.println(attributeName + "=");
                    localOut.println("\"" + attrs.getValue(i) + "\"");
                }
            }
            localOut.println("&gt;<BR>");
            indent += "&nbsp;&nbsp;&nbsp;&nbsp;";   
        }
        catch(java.io.IOException e){}
    }

    public void endElement(String namespaceURI, String localName, String qualifiedName)
    throws SAXException 
    {
        try{
            String elementName = localName; 
            if ("".equals(elementName)) {
                elementName = qualifiedName; 
            }
            indent = indent.substring(0, indent.length() - 24);
            localOut.println(indent + "&lt;/" + elementName + "&gt;");
            localOut.println("<BR>");
        }
        catch(java.io.IOException e){}
    }

    public void characters(char buf[], int offset, int len)
    throws SAXException
    {
        try{
            String s = new String(buf, offset, len);
            if (!s.trim().equals("")) {
                localOut.println(indent + "&nbsp;&nbsp;&nbsp;&nbsp;" + s);
                localOut.println("<BR>"); 
            }
        }
        catch(java.io.IOException e){}
    }
}        
%>

<HTML>
    <HEAD>
        <TITLE>Parsing an XML Document with SAX</TITLE>
    </HEAD>

    <BODY>
        <H1>Parsing an XML Document with SAX</H1>

    <%
        localOut = out;
        parser p = new parser();
        p.parse(application.getRealPath("/") + "test.xml");
    %>
    </BODY>
</HTML>

XML document

<a>

   <b>
   
   </b>
</a>
  Download:  JSPSAXParser.zip( 2 k)




23.53.XML
23.53.1.DOM Parser In JSP
23.53.2.JSP SAX Parser