x_parse2.jsp

JavaWeb高级特性书中源代码

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>
<%@ page contentType="text/html;charset=gb2312" %>
<!--导入所需要的类-->
<%@ page import="javax.xml.transform.TransformerFactory" %>
<%@ page import="javax.xml.transform.TransformerConfigurationException" %>
<%@ page import="javax.xml.transform.TransformerException" %>
<%@ page import="javax.xml.transform.sax.SAXSource" %>
<%@ page import="javax.xml.transform.sax.SAXResult" %>
<%@ page import="javax.xml.transform.sax.SAXTransformerFactory" %>
<%@ page import="javax.xml.transform.stream.StreamSource" %>
<%@ page import="java.io.IOException" %>
<%@ page import="org.xml.sax.XMLFilter,org.xml.sax.SAXException" %>
<%@ page import="org.xml.sax.XMLReader,org.xml.sax.InputSource" %>
<%@ page import="org.xml.sax.helpers.XMLReaderFactory" %>
<%@ page import="org.apache.xml.serializer.Serializer" %>
<%@ page import="org.apache.xml.serializer.SerializerFactory" %>
<%@ page import="org.apache.xml.serializer.OutputPropertiesFactory" %>
<!--创建一个过滤器类-->
<%
	String path = getServletContext().getRealPath("/");
	TransformerFactory tFactory = TransformerFactory.newInstance();
	if(tFactory.getFeature(SAXSource.FEATURE) && 
			tFactory.getFeature(SAXResult.FEATURE))
	{
		SAXTransformerFactory saxTFactory = (SAXTransformerFactory)tFactory;
		XMLFilter xmlFilter1 = saxTFactory.newXMLFilter(new StreamSource(path + 
			"book1.xsl"));
		XMLReader xmlReader = XMLReaderFactory.createXMLReader();
		xmlFilter1.setParent(xmlReader);
		Serializer serializer = SerializerFactory.getSerializer
			(OutputPropertiesFactory.getDefaultMethodProperties("xml"));        
		serializer.setOutputStream(System.out);
		xmlFilter1.setContentHandler(serializer.asContentHandler());
		session.setAttribute("filter", xmlFilter1);
	}
%>
<c:import url="book.xml" charEncoding="gb2312" var="doc" />
设置&lt;x:parse&gt;标签的filter属性，只显示“张孝祥”所著书的相关信息：<br />
<x:parse doc="${doc}" filter="${filter}" var="parsedDoc" />
<table border="1">
	<tr><td>书ID号</td><td>书名</td><td>售价</td></tr>
	<x:forEach select="$parsedDoc//书">
		<tr>
			<td><x:out select="@id"/></td><td><x:out select="书名"/></td>
			<td><x:out select="售价"/></td>
		</tr>
	</x:forEach>
</table>