如何在Apache FOP中使用`xsl:include`

本文介绍了如何在Apache FOP中使用`xsl:include`的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我使用apache FOP生成pdf文件.我有这个xsl代码

I use apache FOP to generate pdf files. I have this xsl code

<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:template match="/">
    <fo:root font-size="11pt" font-family="serif">
      <fo:layout-master-set>
        <fo:simple-page-master master-name="A4-portrait"
          page-height="29.7cm" page-width="21.0cm" margin-top="1cm"
          margin-left="1.5cm" margin-right="1cm" margin-bottom="1cm">
          <fo:region-body />
          <fo:region-after region-name="footer" extent="15mm"/>
        </fo:simple-page-master>
        <fo:simple-page-master master-name="A4-landscape"
          page-width="29.7cm" page-height="21.0cm" margin-top="1cm"
          margin-left="1cm" margin-right="1cm" margin-bottom="1cm">
          <fo:region-body />
          <fo:region-after region-name="footer2" display-align="after" extent="0cm"/>
        </fo:simple-page-master>
      </fo:layout-master-set>
      <fo:page-sequence master-reference="A4-portrait">
        <xsl:include href="footer_common.xsl"/>
        <fo:flow flow-name="xsl-region-body">
          ....
        </fo:flow>
      </fo:page-sequence>
    </fo:root>
  </xsl:template>
</xsl:stylesheet>

注意元素<xsl:include href="footer_common.xsl"/>包含不起作用！这是footer_common.xsl:

Notice the element <xsl:include href="footer_common.xsl"/>The inclusion does not work!And here is footer_common.xsl:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format"
     version="1.0">
  <fo:static-content flow-name="footer" font-size="7pt">
    <fo:table>
      <fo:table-column column-width="70mm"/>
      <fo:table-column column-width="70mm"/>
      <fo:table-column column-width="70mm"/>
      <fo:table-body>
        ...........
      </fo:table-body>
    </fo:table>
  </fo:static-content>
</xsl:stylesheet>

两个.xsl文件都在同一资源目录中.如果重要的话-我使用Eclipse进行开发.在我的Java代码中，我将主.xsl文件作为资源流获取并用于转换.

Both .xsl files are in the same resource directory. If it matters - I use eclipse for development. In my java code I get the main .xsl file as a resource stream and use it for the transformation.

错误消息是xsl:include ist an dieser Position in der Formatvorlage nicht zulässig!这表示xsl:include is not allowed at that position in the template

The error message isxsl:include ist an dieser Position in der Formatvorlage nicht zulässig!which means, xsl:include is not allowed at that position in the template

有人可以看到我在做什么错吗?

Can anyone see what I am doing wrong?

感谢您的帮助或提示.

推荐答案

xsl:include是顶层元素(实际上是样式表声明)，这意味着它只能作为xsl:stylesheet的直接子代出现.因此，您根本无法在fo:page-sequence元素中包含样式表.

xsl:include is a top-level element (actually, a stylesheet declaration), which means that it may only appear as an immediate child of xsl:stylesheet. So, you simply cannot include a stylesheet from within an fo:page-sequence element.

但是我认为您不需要xsl:include和单独的样式表，而是需要xsl:call-template和单独的命名模板.

But I think you're not in need of xsl:include and a separate stylesheet, but of xsl:call-template and a separate named template.

编写类似于以下内容的单独模板:

Write a separate template similar to the following:

<xsl:template name="footer-ebase">
  <fo:static-content flow-name="footer" font-size="7pt">
    <fo:table>
      <fo:table-column column-width="70mm"/>
      <fo:table-column column-width="70mm"/>
      <fo:table-column column-width="70mm"/>
      <fo:table-body>
        <!--...-->
      </fo:table-body>
    </fo:table>
  </fo:static-content>
</xsl:template>

在主模板(您要插入内容的地方)中，使用以下名称引用命名模板:

In the main template (the place where you'd like to insert content), reference the named template with:

<fo:page-sequence master-reference="A4-portrait">
    <xsl:call-template name="footer-ebase"/>
    <fo:flow flow-name="xsl-region-body">
    <!--...-->
    </fo:flow>
</fo:page-sequence>

请注意，编写命名模板并不总是有意义.

Note that it does not always make sense to write named templates. It is advisable if

否则，您的代码将是多余的，因为您需要在多个地方使用相同的功能
代码会使模板杂乱无章，难以阅读
您使用递归来解决问题

如果您想将内容拆分为单独的模板而没有明显的原因，那么最好将其全部删除.

If you want to split content into separate templates for no apparent reason, then you'd best do away with it alltogether.

如果愿意，您仍然可以将命名模板放在单独的样式表中，但是随后您需要将xsl:include用作顶级元素:

You can still put the named template into a separate stylesheet if you wish, but then you need to use xsl:include as a top-level element:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
    <xsl:include href="footer-ebase.xsl"/>
    <!--...-->
</xsl:stylesheet>

这篇关于如何在Apache FOP中使用`xsl:include`的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！