Xsl number() 函数不允许零
Xsl number() function not allowing zero
我正在使用 xsl:if 通过在 table 列中使用数字函数来检查值是否为数字 - column-two，但是它不允许任何零。
当我通过删除 xsl:if 检查它时，我在列单元格中得到 0，否则输出中不存在 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>
因为如果存在任何非数字字符，我需要在单元格中打印空块，所以我在 xsl:if 中使用了这个数字函数来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，我的输出结果为 0（如果猜测错误，请纠正我）。我正在使用带有 xml 文件的 xsl 文件来使用 apache fop 创建 PDF，在此先感谢。
您的测试问题不是 number() 函数。 number() 函数正确地将零转换为数字。但是，数字零在转换为布尔值时被评估为 false() - 并且 xsl:if 必须 return 其 test 表达式的布尔结果。
试试看：
<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.
我正在使用 xsl:if 通过在 table 列中使用数字函数来检查值是否为数字 - column-two，但是它不允许任何零。 当我通过删除 xsl:if 检查它时，我在列单元格中得到 0，否则输出中不存在 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>
因为如果存在任何非数字字符，我需要在单元格中打印空块，所以我在 xsl:if 中使用了这个数字函数来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，我的输出结果为 0（如果猜测错误，请纠正我）。我正在使用带有 xml 文件的 xsl 文件来使用 apache fop 创建 PDF，在此先感谢。
您的测试问题不是 number() 函数。 number() 函数正确地将零转换为数字。但是，数字零在转换为布尔值时被评估为 false() - 并且 xsl:if 必须 return 其 test 表达式的布尔结果。
试试看：
<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.