Xslt 简明教程

XSLT <apply-template>

<xsl:apply-template> 标记指示 XSLT 处理器根据每个所选节点的类型和上下文查找要应用的适当模板。

<xsl:apply-template> tag signals the XSLT processor to find the appropriate template to apply, based on the type and context of each selected node.

Declaration

以下是 <xsl:apply-template> 元素的语法声明。

Following is the syntax declaration of <xsl:apply-template> element.

<xsl:apply-template
   select = Expression
   mode = QName >
</xsl:apply-template>

Attributes

Sr.No

Name & Description

1

select Used to process nodes selected by an XPath expression, instead of processing all the children.

2

mode Allows an element as specified by its Qualified Names to be processed multiple times, each time producing a different result.

Elements

Number of occurrences

Unlimited

Parent elements

xsl:attribute, xsl:comment, xsl:copy, xsl:element, xsl:fallback, xsl:foreach, xsl:if, xsl:message, xsl:otherwise, xsl:param, xsl:processinginstruction, xsl:template, xsl:variable, xsl:when, xsl:with-param, output elements

Child elements

xsl:sort, xsl:with-param

Demo Example

此示例通过迭代每个 <student> 元素，以此元素的 rollno 属性及其子元素 <firstname>, <lastname>, <nickname> 和 <marks> 创建一个列表。

This example creates a list of <student> element with its attribute rollno and its child <firstname>, <lastname>, <nickname>, and <marks> by iterating over each student.

students.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

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>
            <h2>Students</h2>
            <xsl:apply-templates select = "class/student" />
         </body>
      </html>
   </xsl:template>

   <xsl:template match = "class/student">
      <xsl:apply-templates select = "@rollno" />
      <xsl:apply-templates select = "firstname" />
      <xsl:apply-templates select = "lastname" />
      <xsl:apply-templates select = "nickname" />
      <xsl:apply-templates select = "marks" />
      <br />
   </xsl:template>

   <xsl:template match = "@rollno">
      <span style = "font-size = 22px;">
         <xsl:value-of select = "." />
      </span>
      <br />
   </xsl:template>

   <xsl:template match = "firstname">
      First Name:<span style = "color:blue;">
         <xsl:value-of select = "." />
      </span>
      <br />
   </xsl:template>

   <xsl:template match = "lastname">
      Last Name:<span style = "color:green;">
         <xsl:value-of select = "." />
      </span>
      <br />
   </xsl:template>

   <xsl:template match = "nickname">
      Nick Name:<span style = "color:red;">
         <xsl:value-of select = "." />
      </span>
      <br />
   </xsl:template>

   <xsl:template match = "marks">
      Marks:<span style = "color:gray;">
         <xsl:value-of select = "." />
      </span>
      <br />
   </xsl:template>

</xsl:stylesheet>

Output

xlst students applytemplate