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XPath 中的 Element函数

有多种获取和处理元素的方法。

/class/* -选择根节点下的所有元素。

<xsl:for-each select="/class/*">

/class/student -选择根节点下的所有学生元素。

<xsl:for-each select="/class/student">

// student -选择文档中的所有学生元素。

<xsl:for-each select="//student">

示例

在此示例中，我们创建了一个样本XML文档 students.xml 及其样式表文档 students.xsl ，该文档使用XPath表达式。

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/*"</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/*">
                  <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 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 each Students. Xpath expression="//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="//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> 
				
         </body>
      </html>
   </xsl:template>
</xsl:stylesheet>