JSTL - XML <x:param> 标签



<x:param>标签与transform标签一起使用,用于在XSLT样式表中设置参数。

属性

<x:param>标签具有以下属性:

属性 描述 必填 默认值
name 要设置的XSLT参数的名称 主体
要设置的XSLT参数的值

示例

考虑以下XSLT样式表style.xsl。注意<xsl:param...>标签和变量{$bgColor}的使用:

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

<xsl:output method = "html" indent = "yes"/>
<xsl:param name = "bgColor"/>

   <xsl:template match = "/">
      <html>
         <body>
            <xsl:apply-templates/>
         </body>
      </html>
   </xsl:template>

   <xsl:template match = "books">
      <table border = "1" width = "50%" bgColor = "{$bgColor}">
         <xsl:for-each select = "book">
            <tr>
               <td><i><xsl:value-of select = "name"/></i></td>
               <td><xsl:value-of select = "author"/></td>
               <td><xsl:value-of select = "price"/></td>
            </tr>
         </xsl:for-each>
      </table>
   </xsl:template>
   
</xsl:stylesheet>

考虑以下JSP文件,我们使用<x:transform>标签内的<x:param>标签定义bgColor的值:

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

<html>
   <head>
      <title>JSTL x:transform Tags</title>
   </head>

   <body>
      <h3>Books Info:</h3>
      <c:set var = "xmltext">
         <books>
            <book>
               <name>Padam History</name>
               <author>ZARA</author>
               <price>100</price>
            </book>
            
            <book>
               <name>Great Mistry</name>
               <author>NUHA</author>
               <price>2000</price>
            </book>
         </books>
      </c:set>

      <c:import url = "https://127.0.0.1:8080/style.xsl" var = "xslt"/>
      <x:transform xml = "${xmltext}" xslt = "${xslt}">
         <x:param name = "bgColor" value = "grey"/>
      </x:transform>

   </body>
</html>

您将收到以下结果:

Books Info:

Padam History ZARA 100
Great Mistry NUHA 2000
jsp_standard_tag_library.htm
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