无涯教程-XPath - 相对路径位置路径指定XML文档中节点的位置。此路径可以是绝对路径，也可以是相对路径。如果位置

位置路径指定XML文档中节点的位置。此路径可以是绝对路径，也可以是相对路径。如果位置路径以我们选择的节点开始，则它是相对路径。

以下是一些使用相对路径定位元素的示例。

firstname - 选择与学生节点相关的名字。

<p><xsl:value-of select = "firstname"/></p>

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. </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>
           </span><span class="tag">&lt;xsl:for-each</span><span class="pln"> </span><span class="atn">select</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="atv">"/class/student"</span><span class="tag">&gt;</span><span class="pln">
              </span><span class="tag">&lt;tr&gt;</span><span class="pln">
                 </span><span class="tag">&lt;td&gt;&lt;xsl:value-of</span><span class="pln"> </span><span class="atn">select</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="atv">"@rollno"</span><span class="tag">/&gt;&lt;/td&gt;</span><span class="pln">
                 </span><span class="tag">&lt;td&gt;&lt;xsl:value-of</span><span class="pln"> </span><span class="atn">select</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="atv">"firstname"</span><span class="tag">/&gt;&lt;/td&gt;</span><span class="pln">
                 </span><span class="tag">&lt;td&gt;&lt;xsl:value-of</span><span class="pln"> </span><span class="atn">select</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="atv">"lastname"</span><span class="tag">/&gt;&lt;/td&gt;</span><span class="pln">
                 </span><span class="tag">&lt;td&gt;&lt;xsl:value-of</span><span class="pln"> </span><span class="atn">select</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="atv">"nickname"</span><span class="tag">/&gt;&lt;/td&gt;</span><span class="pln">
                 </span><span class="tag">&lt;td&gt;&lt;xsl:value-of</span><span class="pln"> </span><span class="atn">select</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="atv">"marks"</span><span class="tag">/&gt;&lt;/td&gt;</span><span class="pln">		 
              </span><span class="tag">&lt;/tr&gt;</span><span class="pln">
           </span><span class="tag">&lt;/xsl:for-each&gt;</span><span class="pln">
        </span><span class="tag">&lt;/table&gt;</span><span class="pln"> 
     </span><span class="tag">&lt;/body&gt;</span><span class="pln">
  </span><span class="tag">&lt;/html&gt;</span><span class="pln">

</xsl:template>
</xsl:stylesheet>

无涯教程-XPath - 相对路径

students.xml

students.xsl

验证输出

参考链接