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XPath比较运算符

XPath中使用的比较运算符列表:

Index Operator Description
1) = 它指定等于
2) != 它指定不等于
3) < 它指定小于
4) > 它指定大于
5) <= 它指定小于或等于
6) >= 它指定大于或等于

XPath比较运算符示例

让我们以一个例子来演示比较运算符的用法。在这里, 我们通过遍历每个员工来创建一个元素表, 该表具有其属性ID和其子元素<firstname>, <lastname>, <nickname>和<salary>。它检查薪水是否大于(>)25000, 然后打印详细信息。

employee.xml

<?xml version = "1.0"?>
<?xml-stylesheet type = "text/xsl" href = "employee.xsl"?>
<class>
   <employee id = "001">
      <firstname>Abhiram</firstname>
      <lastname>Kushwaha</lastname>
      <nickname>Manoj</nickname>
      <salary>15000</salary>
   </employee>
   <employee id = "002">
      <firstname>Akash</firstname>
      <lastname>Singh</lastname>
      <nickname>Bunty</nickname>
      <salary>25000</salary>
   </employee>
    <employee id = "003">
      <firstname>Brijesh</firstname>
      <lastname>Kaushik</lastname>
      <nickname>Ballu</nickname>
      <salary>20000</salary>
   </employee>
    <employee id = "004">
      <firstname>Zoya</firstname>
      <lastname>Mansoori</lastname>
      <nickname>Sonam</nickname>
      <salary>30000</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 = "pink">
                  <th>ID</th>
                  <th>First Name</th>
                  <th>Last Name</th>
                  <th>Nick Name</th>
                  <th>Salary</th>
               </tr>						
               <xsl:for-each select = "class/employee">
                  <xsl:if test = "salary > 25000">
                     <tr>
                        <td><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:if>
               </xsl:for-each>
            </table>
         </body>
      </html>
   </xsl:template>
</xsl:stylesheet>

输出

XPATH比较运算符1
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