如何在XSLT中随机选择多个元素值

<xsl:variable name="values">
  <value>Value 1</value>
  <value>Value 2</value>
  <value>Value 3</value>
  ...
</xsl:variable>

<xsl:variable name="randomIndex">
  <xsl:number count="value" format="1" />
</xsl:variable>

<xsl:variable name="randomValue">
  <xsl:choose>
    <xsl:when test="$randomIndex = 1">
      <xsl:value-of select="$values/value[1]" />
    </xsl:when>
    <xsl:when test="$randomIndex = 2">
      <xsl:value-of select="$values/value[2]" />
    </xsl:when>
    ...
  </xsl:choose>
</xsl:variable>

<xsl:value-of select="$randomValue" />