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XSLT xsl:value-of用法

本文概述

XSLT <xsl:value-of>元素用于提取所选节点的值。它将根据XPath表达式将所选节点的值放入文本中。

<xsl:value-of
   select = Expression
   disable-output-escaping = "yes" | "no">
</xsl:value-of>

参数说明

Index Name Description
1) select 它指定要在当前上下文中评估的XPpath表达式。
2) disable-outputescaping 默认值-“否”。如果为”是”, 则输出文本不会从文本中转义XML字符。

XSLT <xsl:value-of>元素示例

让我们来看一个示例, 以了解XSLT <xsl:value-of>元素及其属性” id”及其子元素<firstname>, <lastname>, <nickname>和<salary>的用法。

employee.xml

<?xml version = "1.0"?>
<?xml-stylesheet type = "text/xsl" href = "employee.xsl"?> 
<class> 
   <employee id = "001">
      <firstname>Aryan</firstname> 
      <lastname>Gupta</lastname> 
      <nickname>Raju</nickname> 
      <salary>30000</salary>
   </employee> 
   <employee id = "024"> 
      <firstname>Sara</firstname> 
      <lastname>Khan</lastname> 
      <nickname>Zoya</nickname> 
      <salary>25000</salary>
   </employee> 
   <employee id = "056"> 
      <firstname>Peter</firstname> 
      <lastname>Symon</lastname> 
      <nickname>John</nickname> 
      <salary>10000</salary> 
   </employee> 
</class>

员工.xsl

<?xml version = "1.0" encoding = "UTF-8"?>
<xsl:stylesheet version = "1.0" 
xmlns:xsl = "http://www.w3.org/1999/XSL/Transform">   
   <xsl:template match = "/"> 
      <html> 
         <body> 
            <h2>Employee</h2> 
            <table border = "1"> 
               <tr bgcolor = "purple"> 
                  <th>ID</th> 
                  <th>First Name</th> 
                  <th>Last Name</th> 
                  <th>Nick Name</th> 
                  <th>Salary</th> 
               </tr> 
               <!-- for-each processing instruction 
               Looks for each element matching the XPath expression 
               --> 
               <xsl:for-each select="class/employee"> 
                  <tr> 
                     <td> 
                        <!-- value-of processing instruction 
                        process the value of the element matching the XPath expression 
                        -->
                        <xsl:value-of select = "@id"/> 
                     </td> 
                     <td><xsl:value-of select = "firstname"/></td> 
                     <td><xsl:value-of select = "lastname"/></td> 
                     <td><xsl:value-of select = "nickname"/></td> 
                     <td><xsl:value-of select = "salary"/></td>   
                  </tr> 
               </xsl:for-each> 
            </table>
         </body>
      </html> 
   </xsl:template>  
</xsl:stylesheet>

输出

XSLT Xsl值为1
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