（使用XML 1.0）
我正在尝试有条件地格式化TradeDate的值：
<fo:table-cell padding="1mm" border-width="0.5mm" border-style="none">
<fo:block text-align="right" color="{$TradeDateAlert}">
<xsl:value-of select="TradeDate"/
</fo:block>
</fo:table-cell>
XML文件中的日期格式为：YYYY-MM-DD。
这是我创建的变量/函数：
<xsl:variable name="TradeDateAlert" select="10000 * substring(TradeDate, 1, 4) + 100 * substring(TradeDate, 6, 2) + substring(TradeDate, 9, 2)"/>
<xsl:choose>
<xsl:when test="$TradeDateAlert > 20200401">red</xsl:when>
<xsl:otherwise>green</xsl:otherwise>
</xsl:choose>
我可以看到使用[]正确地转换了日期>
<xsl:value-of select="$TradeDateAlert"/>编辑：添加XML代码段
<?xml version="1.0" ?> <Deals xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <GroupedDeal TicketNumber="20"> <Tickets> <TicketNumber>20</TicketNumber> <PartyA>Joe</PartyA> <PartyB>Bill</PartyB> <PrincipalAmount>100</PrincipalAmount> <TradeDate>2020-03-29</TradeDate> </Tickets> </GroupedDeal> </Deals>编辑＃2：完整XSL：
<?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format"> <xsl:output method="xml" indent="yes"/> <xsl:param name="username"></xsl:param> <xsl:param name="generatedOnDate"></xsl:param> <xsl:template match="/"> <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format"> <fo:layout-master-set> <fo:simple-page-master master-name="table" page-height="11in" page-width="8.5in" margin-top=".5in" margin-bottom=".5in" margin-left=".5in" margin-right=".5in"> <fo:region-body margin-top="1in" margin-bottom="1in"/> <fo:region-before extent=".5in"/> <fo:region-after extent=".5in"/> </fo:simple-page-master> </fo:layout-master-set> <fo:page-sequence master-reference="table"> <fo:static-content flow-name="xsl-region-before" text-align="center"> <fo:block font-family="Times New Roman" font-size="11pt" font-weight="bold"> Grouped Deals </fo:block> <fo:block font-family="Calibri" font-size="10pt" color="purple" text-align="left"> Generated by <xsl:value-of select="$username" /> on <xsl:value-of select="$generatedOnDate" /> </fo:block> </fo:static-content> <fo:static-content flow-name="xsl-region-after"> <fo:block text-align="right" font-size="9pt"> Page <fo:page-number/> <!-- of <fo:page-number-citation-last/> --> </fo:block> </fo:static-content> <fo:flow flow-name="xsl-region-body"> <fo:table-caption> <fo:block> Any text, intermingled with: <fo:block> Any text, intermingled with:... </fo:block> </fo:block> </fo:table-caption> <fo:table table-layout="fixed" border-width="0.5mm" border-style="none" font-size="10pt" font-style="Calibri" space-before="10pt"> <fo:table-column column-width="1.5in"/> <fo:table-column column-width="1.5in"/> <fo:table-column column-width="1.5in"/> <fo:table-column column-width="1.5in"/> <fo:table-header text-align="center" background-color="silver"> <fo:table-row> <fo:table-cell padding="1mm" border-width="0.5mm" border-style="none"> <fo:block font-weight="bold">Party A</fo:block> </fo:table-cell> <fo:table-cell padding="1mm" border-width="0.5mm" border-style="none"> <fo:block font-weight="bold">Party B</fo:block> </fo:table-cell> <fo:table-cell padding="1mm" border-width="0.5mm" border-style="none"> <fo:block font-weight="bold">Principal Amount</fo:block> </fo:table-cell> <fo:table-cell padding="1mm" border-width="0.5mm" border-style="none"> <fo:block font-weight="bold">Trade Date</fo:block> </fo:table-cell> </fo:table-row> </fo:table-header> <fo:table-body> <xsl:for-each select="Deals/GroupedDeal"> <fo:table-row> <fo:table-cell> <fo:block> <fo:leader /> </fo:block> </fo:table-cell> </fo:table-row> <fo:table-row background-color="lightgreen" > <fo:table-cell padding="1mm" border-width="0.5mm" border-style="none" > <fo:block font-style="bold"> Ticket #: <xsl:value-of select="@TicketNumber"/> </fo:block> </fo:table-cell> </fo:table-row> <xsl:for-each select="Tickets"> <xsl:variable name="bgclr"> <xsl:choose> <xsl:when test="position() mod 2">#EDF2F8 </xsl:when> <xsl:otherwise>#A7BFDE</xsl:otherwise> </xsl:choose> </xsl:variable> <xsl:variable name="pamountColor"> <xsl:choose> <xsl:when test = "PrincipalAmount > 100000">blue</xsl:when> <xsl:otherwise>black</xsl:otherwise> </xsl:choose> </xsl:variable> <xsl:variable name="partyBAlert"> <xsl:choose> <xsl:when test = "PartyB = 'LAZARD-TK6258'">red</xsl:when> <xsl:otherwise>black</xsl:otherwise> </xsl:choose> </xsl:variable> <!--Trade Date format: 2020-03-29--> <xsl:variable name="TradeDateAlert" select="10000 * substring(TradeDate, 1, 4) + 100 * substring(TradeDate, 6, 2) + substring(TradeDate, 9, 2)"/> <xsl:choose> <xsl:when test="$TradeDateAlert > 20200401">red</xsl:when> <xsl:otherwise>green</xsl:otherwise> </xsl:choose> <fo:table-row background-color="{$bgclr}"> <fo:table-cell padding="1mm" border-width="0.5mm" border-style="none"> <fo:block> <xsl:value-of select="PartyA"/> </fo:block> </fo:table-cell> <fo:table-cell padding="1mm" border-width="0.5mm" border-style="none"> <fo:block color="{$partyBAlert}"> <xsl:value-of select="PartyB"/> </fo:block> </fo:table-cell> <fo:table-cell padding="1mm" border-width="0.1mm" border-style="none" > <fo:block text-align="right" color="{$pamountColor}"> <xsl:value-of select="format-number(PrincipalAmount, '$#,##0.00')"/> </fo:block> </fo:table-cell> <fo:table-cell padding="1mm" border-width="0.5mm" border-style="none"> <fo:block text-align="right" color="{$TradeDateAlert}"> <xsl:value-of select="TradeDate"/> <!--<xsl:value-of select="$TradeDateAlert"/>--> </fo:block> </fo:table-cell> </fo:table-row> </xsl:for-each> </xsl:for-each> </fo:table-body> </fo:table> </fo:flow> </fo:page-sequence> </fo:root> </xsl:template> </xsl:stylesheet>我在做什么错？
谢谢，
（使用XML 1.0）我试图有条件地格式化TradeDate的值：
我想代替