Deal With XML In JSP

JSP and SAX

   <source lang="java">

<%@ page import="javax.xml.parsers.SAXParserFactory,

                javax.xml.parsers.SAXParser,
                com.jexp.MyHandler"%>

<html>

 <head><title>JSP and SAX</title></head>
 <body>
   <%
     SAXParserFactory factory   = SAXParserFactory.newInstance();
     SAXParser        parser    = factory.newSAXParser();
     MyHandler        myHandler = new MyHandler(out);
     parser.parse("http://localhost:8080/chapter10/people.xml",
                  myHandler);
   %>
 </body>

</html>

package com.jexp; import java.io.IOException; import javax.servlet.jsp.JspWriter; import org.xml.sax.Attributes; import org.xml.sax.SAXException; import org.xml.sax.helpers.DefaultHandler; public class MyHandler extends DefaultHandler {

 private int       stepCount, totalAge;
 private JspWriter out;
 private boolean   insideAgeElement;
 
 public MyHandler(JspWriter out)
 {
   this.out = out;
 }
 public void startDocument() throws SAXException
 {
   try 
   {
     out.write(++stepCount + ". Start of document
");      
   }
   catch (IOException e) 
   {
     throw new SAXException(e);
   }    
 } // end of startDocument()
 public void endDocument() throws SAXException
 {
   try 
   {

out.write(++stepCount + ". End of document

"); out.write("The total of all ages in the XML document is " + totalAge + ""); } catch (IOException e) { throw new SAXException(e); } } // end of endDocument() public void startElement(String namespaceURI, String localName, String qName, Attributes attrs) throws SAXException { if ( qName.equals("age")) { insideAgeElement = true; } try { out.write(++stepCount + ". Start of element: " + qName + ""); int numberOfAttributes = attrs.getLength(); if ( numberOfAttributes > 0 ) { out.write(". Attributes:

" + attrs.getQName(i) + " = " + attrs.getValue(i) + "

     } // end of for ()
       
     if ( numberOfAttributes > 0 ) 
     {

");

     }
   }
   catch (IOException e) 
   {
     throw new SAXException(e);
   }    
 } // end of startElement()
 public void endElement(String namespaceURI, String localName, String qName)
     throws SAXException
 {
   if ( qName.equals("age") ) 
   {
     insideAgeElement = false;
   }
   
   try 
   {
     out.write(++stepCount + ". End of element " + qName + "
");      
   }
   catch (IOException e) 
   {
     throw new SAXException(e);
   } // end of try-catch
   
 } // end of endElement()
 public void characters(char[] chars, int start, int length) throws SAXException
 {
   String content = new String(chars, start, length);
   if ( insideAgeElement ) 
   {
     int age  =  Integer.parseInt(content);
     totalAge += age;
   }
   
   try 
   {
     out.write(++stepCount + ". Character content = ");
     if ( length > 0 ) 
       out.write("" + content + "
");
   }
   catch (IOException e) 
   {
     throw new SAXException(e);
   } // end of try-catch
   
 } // end of characters()

} // end of class MyHandler

      </source>

JSP Displaying a Subset in XML

   <source lang="java">

/* <people>

 <person>
   <name>Peter</name>
   <age>54</age>
 </person>
 <person>
   <name>Patricia</name>
   <age>50</age>
 </person>

</people>

/

<%@ taglib uri="http://java.sun.ru/jstl/xml" prefix="x" %> <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <html >

 <head>
   <title>Displaying a Subset</title>
 </head>
 <body>
   <c:import url="http://localhost:8080/chapter02/people.xml"
             var="inputDoc" />
   <x:parse  xml = "${inputDoc}"
             var = "parsedDoc" />
   Here is a list of people over the age of 45:

<x:out select="." /> </x:forEach>

 </body>

</html>

      </source>

JSP in pure XML generating conforming XHTML

   <source lang="java">

/*

* Copyright (c) Ian F. Darwin, http://www.darwinsys.ru/, 1996-2002.
* All rights reserved. Software written by Ian F. Darwin and others.
* $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS""
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* 
* Java, the Duke mascot, and all variants of Sun"s Java "steaming coffee
* cup" logo are trademarks of Sun Microsystems. Sun"s, and James Gosling"s,
* pioneering role in inventing and promulgating (and standardizing) the Java 
* language and environment is gratefully acknowledged.
* 
* The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
* inventing predecessor languages C and C++ is also gratefully acknowledged.
*/

<?xml version="1.0"?> <jsp:root xmlns:jsp="http://java.sun.ru/JSP/Page" version="1.2"> <jsp:directive.page contentType="text/html"/> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"

> <html> <head>

 <title>JSP in pure XML generating conforming XHTML</title>
 <meta name="version"
   content="$Id: hello-xml.jsp,v 1.3 2003/08/23 01:48:21 ian Exp $" />
 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />

</head> <body>

Hello

<p>Here on our farm it is now <jsp:expression> new java.util.Date() </jsp:expression>.

</body> </html> </jsp:root>

      </source>

JSP List of data in the XML document

   <source lang="java">

<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

 <xsl:template match="people">

List of people in the XML document

     <xsl:apply-templates />

Name	Age

 </xsl:template>
 <xsl:template match="person">
   <tr>
     <td><xsl:value-of select="name/text()" /></td>
     <td><xsl:value-of select="age/text()"  /></td>
   </tr>    
 </xsl:template>

</xsl:transform> <%@ taglib uri="http://java.sun.ru/jstl/xml" prefix="x" %> <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <html>

 <head>
   <title>Transforming a Subset</title>
 </head>
 <body>
   <c:import url="http://localhost:8080/chapter12/Multi-Template/people.xml"
             var="inputDoc" />
   <c:import url="http://localhost:8080/chapter12/Multi-Template/transform.xsl"
             var="stylesheet" />
   <x:parse  xml = "${inputDoc}"
             var = "parsedDoc" />
   <x:set    select = "$parsedDoc/people/person/name[../age > 50]"
             var    = "subset" />
    
   <x:transform xml  = "${subset}"
                xslt = "${stylesheet}" />

 </body>

</html>

      </source>

JSP Parsing using JDOM

   <source lang="java">

/* <people>

 <person>
   <name>Joe</name>
   <age>30</age>
 </person>
 <person>
   <name>Rob</name>
   <age>29</age>
 </person>

</people>

/

<%@ page import="org.jdom.Element,

                org.jdom.Document,
                org.jdom.input.SAXBuilder,
                java.util.List,
                java.util.Iterator"

%>

<%

 SAXBuilder builder  = new SAXBuilder();
 Document   doc      = builder.build("http://localhost:8080/chapter11/people.xml");
 List       children = doc.getRootElement().getChildren(); // 2 person nodes
 Iterator   iter     = children.iterator();

%> <html>

 <head><title>Parsing using JDOM</title></head>
 <body>

List of people

     <%
       while (iter.hasNext()) // for each "person" node
       {
         Element  currentItem = (Element) iter.next();     // each "person"
         List     nameAndAge  = currentItem.getChildren();
         Iterator nameAgeIter = nameAndAge.iterator();
     %>

<% while ( nameAgeIter.hasNext() ) { Element child = (Element) nameAgeIter.next(); // "name" or "age" %>

Name	Age
<%= child.getText() %>

 </body>

</html>

      </source>

JSP Parsing using the DOM

   <source lang="java">

/* <people>

 <person>
   <name>Joe</name>
   <age>30</age>
 </person>
 <person>
   <name>Rob</name>
   <age>29</age>
 </person>

</people>

/

<%@page import="org.w3c.dom.Node, org.w3c.dom.Element, org.w3c.dom.Document, org.w3c.dom.NodeList, javax.xml.parsers.DocumentBuilder, javax.xml.parsers.DocumentBuilderFactory" %> <%!

 public boolean isTextNode(Node n)
 {
   return n.getNodeName().equals("#text");
 }

%> <html>

 <head><title>Parsing using the DOM</title></head>
 <body>
   <%
     DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
     DocumentBuilder        builder = factory.newDocumentBuilder();
     Document doc = builder.parse("http://localhost:8080/chapter02/people.xml");
   %>

List of people

   <%
     Element  root        = doc.getDocumentElement(); // "people" node
     NodeList personNodes = root.getChildNodes();     // 2 "person" nodes
     for (int i=0; i<personNodes.getLength(); i++)
     {
       Node currentPerson = personNodes.item(i);
       if (isTextNode(currentPerson)) // skip whitespace node
         continue;
       NodeList nameAndAge = currentPerson.getChildNodes(); // "name" and "age" nodes
   %>

<% for (int j=0; j<nameAndAge.getLength(); j++ ) { Node currentItem = nameAndAge.item(j); if ( isTextNode(currentItem)) continue; %>

   <%
       } // end of name & age loop
   %>

<% } // end person loop %>

Name	Age
<%= currentItem.getFirstChild().getNodeValue() %>

 </body>

</html>

      </source>

JSP Parsing using the DOM and JSTL

   <source lang="java">

/* <people>

 <person>
   <name>Joe</name>
   <age>30</age>
 </person>
 <person>
   <name>Rob</name>
   <age>29</age>
 </person>

</people>

/

<%@ taglib uri="http://java.sun.ru/jstl/xml" prefix="x" %> <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <html>

 <head><title>Parsing using the DOM and JSTL</title></head>
 <body>
   <c:import url="http://localhost:8080/chapter11/people.xml"
             var="personXml" />
   <x:parse xml="${personXml}" varDom="parsedXml" />

List of people

     <x:forEach select="$parsedXml/people/person" var="currentPerson">

<x:forEach select="*">

       </x:forEach>

</x:forEach>

Name	Age
<x:out select="." />

 </body>

</html>

      </source>

JSP XML and XSLT transform

   <source lang="java">

/* <people>

 <person>
   <name>Peter</name>
   <age>54</age>
 </person>
 <person>
   <name>Patricia</name>
   <age>50</age>
 </person>

</people>

/

//globalParam.xsl /* <xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

 <xsl:param name="ageParam">60</xsl:param>
 <xsl:template match="people">

List of people in the XML document

     <xsl:apply-templates />

Name	Age

 </xsl:template>
 <xsl:template match="person">
   <xsl:call-template name="processPerson">
     <xsl:with-param name="ageParam">
       51
     </xsl:with-param>
   </xsl:call-template>
 </xsl:template>
 <xsl:template name="processPerson">
   
   <tr>
     <td>
       <xsl:value-of select="name/text()" />
     </td>
     <td>
       <xsl:value-of select="age/text()"  />
       <xsl:if test="age/text() > $ageParam">
           (old!)
         </xsl:if>
     </td>
   </tr>    
 </xsl:template>

</xsl:transform>

/

<%@ taglib uri="http://java.sun.ru/jstl/xml" prefix="x" %> <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <html >

 <head>
   <title>Using a Named Template with Global Parameters</title>
 </head>
 <body>
   <c:import url="http://localhost:8080/chapter02/people.xml"
             var="inputDoc" />
   <c:import url="http://localhost:8080/chapter02/globalParam.xsl"
             var="stylesheet" />
   <x:transform xml  = "${inputDoc}"
                xslt = "${stylesheet}">
     <x:param name="ageParam"  value="49" />
   </x:transform>
 </body>

</html>

      </source>

Performing XSL Transformations

   <source lang="java">

<%@ page language="java" contentType="text/html" %> <%@ page pageEncoding="UTF-8"%> <%@ page import="javax.xml.transform.*"%> <%@ page import="javax.xml.transform.stream.*"%> <html>

 <head>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <title>Customer Orders</title>
 </head>
 <body>

Customer Orders

     <%! String FS = System.getProperty("file.separator"); %>
       <%
       String xmlFile = request.getParameter("XML");
       String xslFile = request.getParameter("XSL");
       String ctx = getServletContext().getRealPath("") + FS;
       xslFile = ctx + xslFile;
       xmlFile = ctx + xmlFile;
       TransformerFactory tFactory = TransformerFactory.newInstance();
       Transformer transformer = tFactory.newTransformer(new StreamSource(xslFile));
       transformer.transform(new StreamSource(xmlFile), new StreamResult(out));
       %>
   </body>

</html>

</source>

Using the Core XML tags

   <source lang="java">

<%@ taglib uri="http://java.sun.ru/jstl/xml" prefix="x" %> <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <html> <head><title>Using the Core XML tags</title></head> <body>

Here are the context-params and servlets from the XML file

<c:import url="http://localhost:8080/home/web.xml" var="webXml" /> <x:parse xml="${webXml}" var="doc" />

First the context params...

<x:forEach select="$doc//context-param">

   <x:out select="param-name"/>: <x:out select="param-value"/>

</x:forEach>

Now the servlet info...

<x:forEach select="$doc//servlet>

   <x:out select="servlet-name"/>

 <x:out select="servlet-class"/>

</x:forEach>

</body> </html>

      </source>

XML transformation

   <source lang="java">

<%@ taglib uri="http://java.sun.ru/jstl/xml" prefix="x" %> <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <c:import url="http://localhost:8080/home/build.xml" var="buildXml" /> <c:import url="/WEB-INF/xslt/myTrans.xsl" var="xslt" /> <x:transform xml="${buildXml}" xslt="${xslt}" /> //myTrans.xsl

<?xml version="1.0" encoding="ISO-8859-1"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output method="html"/> <xsl:template match="/">

   <html><head><title>List of build.xml targets

</title></head><body bgcolor="white">

Build.xml targets

   <xsl:apply-templates />
   </body></html>

</xsl:template> <xsl:template match="/project">

<xsl:value-of select="@name" />: depends=<xsl:value-of select="@depends" />

</xsl:template>

<xsl:template match="text()">

   <xsl:value-of select="normalize-space()" />

</xsl:template>

</xsl:stylesheet>

      </source>

XSLT In JSP

   <source lang="java">

/*

 Java, XML, and Web Services Bible
 Mike Jasnowski
 ISBN: 0-7645-4847-6

/

<HTML>

Enter card Info

Card To:	<INPUT TYPE="TEXT" SIZE="20" NAME="cardto">
Card From:	<INPUT TYPE="TEXT" SIZE="20" NAME="cardfrom">
Message:	<INPUT TYPE="TEXT" SIZE="60" NAME="message">

<INPUT TYPE="SUBMIT" VALUE="PREVIEW">

</FORM> </HTML>

<%@ page contentType="image/svg-xml" %> <% String cardTo = request.getParameter("cardto"); String cardFrom = request.getParameter("cardfrom"); String message = request.getParameter("message"); %> <svg width="400" height="200"> <g style="font-family:Arial;font-size:12pt;">

<text x="10" y="20">
   <%= cardTo %>, someone has sent you a message
</text>
<text x="10" y="60">
   <%= cardFrom %> would like to tell you
</text>
<text x="10" y="140">
   <%= message %>
</text>

</g> </svg>

      </source>

XSLT in JSP 2

   <source lang="java">

/*

 Java, XML, and Web Services Bible
 Mike Jasnowski
 ISBN: 0-7645-4847-6

/

<%@ page contentType="image/svg-xml" %> <%@ page import="org.xml.sax.*" %> <%@ page import="org.apache.xalan.xslt.*" %> <%@ page import="java.io.*" %> <% try {

   XSLTProcessor processor = XSLTProcessorFactory.getProcessor(); 
      
   ByteArrayOutputStream bos = new ByteArrayOutputStream();
   
   processor.process(new XSLTInputSource("games.xml"),
                     new XSLTInputSource("games.xsl"),
                   new XSLTResultTarget(bos));
   out.println(bos);

} catch (Exception ex) {

   out.println(ex);

} %>

<?xml version="1.0"?> <games>

 <game genre="rpg">XML Invaders</game>
 <game genre="rpg">A Node in the XPath</game>
 <game genre="rpg">XPath Racers</game>

</games> //games.xsl <?xml version="1.0"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output method="html"/> <xsl:template match="/"> <svg width="200" height="200"> <g> <xsl:for-each select="games/game"> <text x="10" y="{number(10)*position()}"> <xsl:value-of select="text()"/> </text> </xsl:for-each> </g> </svg> </xsl:template> </xsl:stylesheet>

      </source>

Java/JSP/XML

Содержание

Deal With XML In JSP

JSP and SAX

JSP Displaying a Subset in XML

JSP in pure XML generating conforming XHTML

Hello

JSP List of data in the XML document

List of people in the XML document

JSP Parsing using JDOM

List of people

JSP Parsing using the DOM

List of people

JSP Parsing using the DOM and JSTL

List of people

JSP XML and XSLT transform

List of people in the XML document

Performing XSL Transformations

Customer Orders

Using the Core XML tags

Here are the context-params and servlets from the XML file

First the context params...

Now the servlet info...

XML transformation

Build.xml targets

XSLT In JSP

Enter card Info

XSLT in JSP 2

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