xsl-fo - Apache FOP 2.2 -> 2.3，分页

Question

我在将 FOP 从 2.2 版迁移/升级到 2.3 版时遇到了问题。分页器停止工作...这是示例代码:

主要"template":

<xsl:stylesheet 
version="1.1" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
xmlns:fo="http://www.w3.org/1999/XSL/Format"
exclude-result-prefixes="fo">
<fo:page-sequence 
    master-reference="templates/A4.xsl" 
    initial-page-number="1" 
    font-size="9pt" 
    font-weight="plain"
    font-family="Arial"
>

    <section id="footer" filename="templates/ftr_PgNmb.xsl" />

    <fo:flow flow-name="xsl-region-body">

        <fo:block >Page 1</fo:block>

        <fo:block page-break-before="always"/>
        <fo:block >Page 2</fo:block>

        <fo:block page-break-before="always"/>
        <fo:block>Page 3</fo:block>

        <fo:block id="last-page" />

    </fo:flow>

</fo:page-sequence>

分页器 1:

<xsl:stylesheet version="1.1" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
xmlns:fo="http://www.w3.org/1999/XSL/Format"
exclude-result-prefixes="fo"
>
<xsl:apply-templates select="templates/ftr_PgNmbTemplate.xsl"/>

分页器 2:

<xsl:stylesheet version="1.1" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format"
exclude-result-prefixes="fo">
<xsl:template match="templates/ftr_PgNmbTemplate.xsl">  
<fo:static-content flow-name="xsl-region-after-firstpage">
    <fo:block>
        <fo:table table-layout="fixed" width="100%" border-collapse="separate">
            <fo:table-column />
            <fo:table-body>
                <fo:table-row>
                    <fo:table-cell>
                        <fo:block text-align="right">
                            Page <fo:page-number /> of <fo:page-number-citation-last ref-id="last-page"/>
                        </fo:block>
                    </fo:table-cell>
                </fo:table-row>
            </fo:table-body>
        </fo:table>
    </fo:block>
</fo:static-content>

<fo:static-content flow-name="xsl-region-after-otherpages">
    <fo:block>
        <fo:table table-layout="fixed" width="100%" border-collapse="separate">
            <fo:table-column/>
            <fo:table-body>
                <fo:table-row>
                    <fo:table-cell>
                        <fo:block text-align="right">
                            Page <fo:page-number /> of <fo:page-number-citation-last ref-id="last-page"/>
                        </fo:block>
                    </fo:table-cell>
                </fo:table-row>
            </fo:table-body>
        </fo:table>
    </fo:block>
</fo:static-content>

</xsl:template>

我得到的错误是:

SEVERE: Error while serializing page 1. Reason: java.io.NotSerializableException: org.apache.fop.fo.pagination.PageSequence java.io.NotSerializableException: org.apache.fop.fo.pagination.PageSequence at java.io.ObjectOutputStream.writeObject0(Unknown Source)

有什么提示吗？我一点头绪都没有。我所发现的只是问题出在 <fo:page-number-citation-last ref-id="last-page"/>称呼。如果删除了 PDF，就可以很好地创建它。有了它……不。

编辑:生成的完整 xsl:

java.io.NotSerializableException: org.apache.fop.fo.pagination.PageSequence

Answer 1

根据 FOP's help page about FO :

... To accomplish this in XSL 1.0, place an empty block with an id at the end of the flow:

<fo:flow ...>
  ...
  <!-- block, NOT page-sequence -->
  <fo:block id="last-page"/>
</fo:flow>

获取最后一页的页码如下:

<!-- page-number-citation, NOT page-number-citation-last !!! -->
<fo:page-number-citation ref-id="last-page"/>

This does not work in certain situations: multiple page sequences, an initial page number other than 1, or forcing a certain page count, thereby producing blank pages at the end.

In XSL 1.1, you get another option to do this: make sure an "id" is set on the page-sequence and reference it using fo:page-number-citation -last . First, the page-sequence:

<!-- page-sequence, NOT block-->
<fo:page-sequence id="seq1" ...

After that, reference the last page the page-sequence generates:

<!-- page-number-citation-last, NOT page-number-citation !! -->
<fo:page-number-citation-last ref-id="seq1"/>

Warning: There is no reliable way to get the real total page count with FO mechanisms. You can only get page numbers.

---

所以在你的情况下，请:

1. 更改 <fo:page-number-citation-last/>至 <fo:page-number-citation/> .

2. 或者，引入一个 id="lastPage"你(最后)的属性page-sequence ，不是你的最后一个block , 然后你可以通过以下方式引用它:

   <fo:page-number-citation-last ref-id="last-page"/>`