XPath - 属性节点

可以使用元素的 @attribute-name，轻松检索和检查此属性。

@name − 获取属性“name”的值。

<td><xsl:value-of select = "@rollno"/></td>

属性可以使用运算符进行比较。

@rollno = 493 − 获取属性“rollno”的文本值，并与值进行比较。

<xsl:if test = "@rollno = 493">

示例

在此示例中，我们创建了样本 XML 文档 students.xml 及其样式表文档 students.xsl，该文档使用了 XPath 表达式。

以下是使用的示例 XML。

students.xml

<?xml version = "1.0"?>
<?xml-stylesheet type = "text/xsl" href = "students.xsl"?>
<class>
   <student rollno = "393">
      <firstname>Dinkar</firstname>
      <lastname>Kad</lastname>
      <nickname>Dinkar</nickname>
      <marks>85</marks>
   </student>
   <student rollno = "493">
      <firstname>Vaneet</firstname>
      <lastname>Gupta</lastname>
      <nickname>Vinni</nickname>
      <marks>95</marks>
   </student>
   <student rollno = "593">
      <firstname>Jasvir</firstname>
      <lastname>Singh</lastname>
      <nickname>Jazz</nickname>
      <marks>90</marks>
   </student>
</class>

students.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>
            <h3>Details of each Students. Xpath expression = "/class/student"</h3>
				
            <table border = "1">
               <tr bgcolor = "#9acd32">
                  <th>Roll No</th>
                  <th>First Name</th>
                  <th>Last Name</th>
                  <th>Nick Name</th>
                  <th>Marks</th>
               </tr>
					
               <xsl:for-each select = "/class/student">
                  <tr>
                     <td><xsl:value-of select = "@rollno"/></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 = "marks"/></td>
                  </tr>
               </xsl:for-each>
            </table> 
				
            <h3>Details of Student whose roll no is 493. Xpath expression = "@rollno = 493"</h3>
				
            <table border = "1">
               <tr bgcolor = "#9acd32">
                  <th>Roll No</th>
                  <th>First Name</th>
                  <th>Last Name</th>
                  <th>Nick Name</th>
                  <th>Marks</th>
               </tr>
					
               <xsl:for-each select = "//student">
					
                  <xsl:if test = "@rollno = 493">
                     <tr>
                        <td><xsl:value-of select = "@rollno"/></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 = "marks"/></td>
                     </tr>
                  </xsl:if>
               </xsl:for-each>
            </table> 
         </body>
      </html>
   </xsl:template>
</xsl:stylesheet>

验证输出

xpath_nodes.htm

打印页面