这里是一个样式表，它定义了 replace 和 by 字符串的全局参数，然后将它们传递给到该模式下的所有模板 str-repl-in-nodeset:

Here is a stylesheet that defines global parameters for the replace and by strings and then passes them on to all templates in that mode str-repl-in-nodeset:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    version="1.0"
    xmlns:exsl="http://exslt.org/common"
    exclude-result-prefixes="exsl">

    <xsl:param name="ns1">
        <nodeSet> 
            <node>a1;a2;a3</node> 
            <node>b1;b2;b3</node>
        </nodeSet>
    </xsl:param>

    <xsl:param name="replace" select="';'"/>
    <xsl:param name="by" select="'#'"/>

    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="/">
        <xsl:apply-templates select="exsl:node-set($ns1)" mode="str-repl-in-nodeset">
            <xsl:with-param name="replace" select="$replace"/>
            <xsl:with-param name="by" select="$by"/>
        </xsl:apply-templates>
    </xsl:template>

    <xsl:template match="/ | @* | node()" mode="str-repl-in-nodeset">
        <xsl:param name="replace"/>
        <xsl:param name="by"/>
        <xsl:copy>
            <xsl:apply-templates select="@*|node()" mode="str-repl-in-nodeset">
                <xsl:with-param name="replace" select="$replace"/>
                <xsl:with-param name="by" select="$by"/>
            </xsl:apply-templates>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="*/text()" mode="str-repl-in-nodeset">
        <xsl:param name="replace"/>
        <xsl:param name="by"/>
        <xsl:call-template name="string-replace-all">
            <xsl:with-param name="text" select="."/>
            <xsl:with-param name="replace" select="$replace"/>
            <xsl:with-param name="by" select="$by"/>
        </xsl:call-template>
    </xsl:template>


    <xsl:template name="string-replace-all">
        <xsl:param name="text" />
        <xsl:param name="replace" />
        <xsl:param name="by" />
        <xsl:choose>
            <xsl:when test="contains($text, $replace)">
                <xsl:value-of select="substring-before($text,$replace)" />
                <xsl:value-of select="$by" />
                <xsl:call-template name="string-replace-all">
                    <xsl:with-param name="text" select="substring-after($text,$replace)" />
                    <xsl:with-param name="replace" select="$replace" />
                    <xsl:with-param name="by" select="$by" />
                </xsl:call-template>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="$text" />
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>


</xsl:transform>