XSL 转换后保留 PDF 中的空格 [英] Preserving whitespace in PDF after XSL transform

问题描述

我正在使用 XSL 转换将 XML 转换为 PDF.不幸的是，它没有保留 XML 中的空格.例如:

I'm converting an XML to PDF using XSL transformation. Unfortunately, it is not preserving the whitespace from the XML. For example:

我想转换这个:

Test Line Data         : 0xAA

从 XML 到 PDF.它在 XML 中看起来不错，它在 Data 和 : 之间有 9 个空格，但在 PDF 中它显示

to PDF from an XML. It looks fine in the XML, it has the 9 spaces between Data and : but in the PDF it shows

Test Line Data : 0xAA

这是我目前所做的.将数据写入 XML 后，我将执行以下操作:

Here is what I currently do. After writing the data to the XML, I will perform the following:

XPathDocument xPathDocDiag = new XPathDocument(this.FileNameDiagXml);
XslCompiledTransform xslTransDiag = new XslCompiledTransform();
XmlTextWriter xmlWriterDiag = new XmlTextWriter(outputFO, System.Text.Encoding.UTF8);
xslTransDiag.Transform(xPathDocDiag, null, xmlWriterDiag);
xmlWriterDiag.Flush();
xmlWriterDiag.Close();

然后启动 Apache FOP 将 FO 转换为 PDF.就像我说的，不幸的是，空白在我需要时没有保留.我曾尝试手动添加 代替 XML(查找和替换)中的空格，这在转换后确实有效，但众所周知，文字 &不能在 XML 中，因此该选项已失效.我曾尝试使用 XmlReader，然后使用

And then launch Apache FOP to convert the FO to PDF. Like I said, unfortunately, the white space is not preserved when I need it to be. I have tried manually adding   in place of spaces in the XML (find and replace) which does work after the conversion, but as we all know, the literal & can't be in XML so that option is out. I have tried using XmlReader and then using

<xsl:preserve-space elements="*"/>

但同样，这也不起作用(没有错误或任何东西，只是不起作用).
XSL 部分如下所示:

but again, that doesn't work either (no error or anything, just doesn't work).
The section of XSL looks like so:

<xsl:when test="Data != ''">
                <fo:table-cell text-align="left">
                    <fo:block />
                </fo:table-cell>
                <fo:table-cell text-align="left" number-columns-spanned="7">
                    <fo:block font-family="Courier New, Courier, monospace" font-size="9pt"><xsl:value-of select="Data" /></fo:block>
                </fo:table-cell>
            </xsl:when>

我尝试了各种属性修改都无济于事.我在这里遗漏了一些明显的东西吗?

I have tried all sorts of attribute modifying to no avail. Am I missing something obvious here?

推荐答案

将属性 white-space="pre" 添加到您想要保留的任何 fo:block中的空白.

Add the attribute white-space="pre" to whatever fo:block you want to preserve the white-space in.

示例:

<fo:block white-space="pre">Test Line Data         : 0xAA</fo:block>

属性 white-space-treatment="preserve" 也应该有效，但是当我在 FOP 中尝试时，它没有.

The attribute white-space-treatment="preserve" should also work, but when I tried it in FOP, it didn't.

属性 white-space-collapse="false" 也有效.

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