我正在使用xsl：if通过在表列-第2列中使用数字功能来检查值是否为数字，但不允许任何零。 当我通过删除xsl进行检查时：如果我在列单元格中获得0，则输出中不存在0。
我的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:template match="data">
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
<fo:layout-master-set>
<fo:simple-page-master master-name="simple"
page-height="8.5in" page-width="11in" margin-top=".5in"
margin-bottom=".5in" margin-left=".5in" margin-right=".5in">
<fo:region-body margin-top="2cm" margin-bottom="2cm" />
<fo:region-before extent="2cm" overflow="hidden" />
<fo:region-after extent="1cm" overflow="hidden" />
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="simple"
initial-page-number="1">
<fo:static-content flow-name="xsl-region-before">
<fo:block font-size="13.0pt" font-family="serif"
padding-after="2.0pt" space-before="4.0pt" text-align="center"
border-bottom-style="solid" border-bottom-width="1.0pt">
<xsl:text>PDF Test</xsl:text>
</fo:block>
</fo:static-content>
<fo:static-content flow-name="xsl-region-after">
<fo:block font-size="12.0pt" font-family="sans-serif"
padding-after="2.0pt" space-before="2.0pt" text-align="center"
border-top-style="solid" border-bottom-width="1.0pt">
<xsl:text>Page</xsl:text>
<fo:page-number />
</fo:block>
</fo:static-content>
<fo:flow flow-name="xsl-region-body">
<xsl:apply-templates select="data-body" />
</fo:flow>
</fo:page-sequence>
</fo:root>
</xsl:template>
<xsl:template match="data-body">
<fo:block text-align="center">
<fo:table table-layout="fixed" width="100%"
border-style="dashed">
<fo:table-column border-style="solid" />
<fo:table-column border-style="solid" />
<fo:table-column border-style="solid" />
<fo:table-header>
<xsl:apply-templates select="table-header" />
</fo:table-header>
<fo:table-body>
<xsl:apply-templates select="table-data" />
</fo:table-body>
</fo:table>
</fo:block>
</xsl:template>
<xsl:template match="table-header">
<fo:table-row keep-together.within-page="always"
border-style="solid">
<fo:table-cell>
<fo:block font-size="10pt" font-family="sans-serif"
padding-top="3pt">
<xsl:value-of select="column-one"></xsl:value-of>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block font-size="10pt" font-family="sans-serif"
padding-top="3pt">
<xsl:value-of select="column-two"></xsl:value-of>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block font-size="10pt" font-family="sans-serif"
padding-top="3pt">
<xsl:value-of select="column-three"></xsl:value-of>
</fo:block>
</fo:table-cell>
</fo:table-row>
</xsl:template>
<xsl:template match="table-data">
<fo:table-row keep-together.within-page="always"
border-style="solid">
<fo:table-cell>
<fo:block font-size="10pt" font-family="sans-serif"
padding-top="3pt">
<xsl:value-of select="column-one"></xsl:value-of>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block font-size="10pt" font-family="sans-serif"
padding-top="3pt">
<xsl:if test="number(column-two)">
<xsl:value-of select="format-number(translate(column-two, ',','.'), '#,###.##')"></xsl:value-of>
</xsl:if>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block font-size="10pt" font-family="sans-serif"
padding-top="3pt">
<xsl:value-of select="column-three"></xsl:value-of>
</fo:block>
</fo:table-cell>
</fo:table-row>
</xsl:template>
</xsl:stylesheet>
我的XML
<?xml version="1.0" encoding="UTF-8"?>
<data>
<data-body>
<table-header>
<column-one>Column One</column-one>
<column-two>Column Two</column-two>
<column-three>Column Three</column-three>
</table-header>
<table-data>
<column-one>One</column-one>
<column-two>5000</column-two>
<column-three>Three</column-three>
</table-data>
<table-data>
<column-one>One</column-one>
<column-two>5000</column-two>
<column-three>Three</column-three>
</table-data>
<table-data>
<column-one>One</column-one>
<column-two>0</column-two>
<column-three>Three</column-three>
</table-data>
<table-data>
<column-one>One</column-one>
<column-two>0</column-two>
<column-three>Four</column-three>
</table-data>
<table-data>
<column-one>One</column-one>
<column-two>2000</column-two>
<column-three>Four</column-three>
</table-data>
<table-data>
<column-one>One</column-one>
<column-two>1234</column-two>
<column-three>Five</column-three>
</table-data>
<table-data>
<column-one>One</column-one>
<column-two>5666</column-two>
<column-three>Five</column-three>
</table-data>
<table-data>
<column-one>One</column-one>
<column-two>5666</column-two>
<column-three>Five</column-three>
</table-data>
</data-body>
</data>
由于如果存在任何非数字字符，我需要在单元格中打印空白块，所以我在xsl：if中使用了此数字功能，以检查单元格值是否为数字以应用逗号分隔符。因此，如果我删除了xsl：if测试，则输出为0（如果猜测错误，请更正我）。我先使用xsl文件和xml文件使用apache fop创建PDF，在此先感谢。
答案 0 :(得分：0)
测试的问题不是number()函数。 number()函数可将零正确转换为数字。但是，数字零在转换为布尔值时将求值为false()，并且xsl:if必须为其test表达式返回布尔结果。
请尝试：
<xsl:if test="number(function_number)=number(function_number)">
之所以有效，是因为NaN is never equal to anything, not even to itself。