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Posted to user@poi.apache.org by Anton Oellerer <a....@docu-tools.com> on 2022/06/21 07:52:12 UTC
Creating Table of Contents
Hello,
The project I am currently working on needs to hand over a .docx document with a finished table of contents to an API for pdf conversion.
As far as I figured out, it is currently not possible to generate a finished TOC with Apache POI alone, so we decided to try using docx4j + Apache FOP to update the TOC after generating the document with Apache POI.
In the first testing runs, we noticed that there are multiple errors in docx4j Apache FOP stemming from missing values, which prevent generating a valid document.
Those include:
* Cannot invoke "org.docx4j.wml.Style$Name.getVal()" because the return value of "org.docx4j.wml.Style.getName()" is null
* org.docx4j.XmlUtils: java.lang.NullPointerException: Cannot invoke "org.w3c.dom.DocumentFragment.getFirstChild()" because "df" is null
* java.lang.StringIndexOutOfBoundsException: begin 0, end -1, length 2 at org.docx4j.model.properties.run.Lang.setXslFO(Lang.java:71)
* javax.xml.transform.TransformerException: org.apache.fop.fo.ValidationException: "fo:table-cell" is missing child elements. Required content model: marker* (%block;)+ (See position 9:3836)
Do you know whether these results stem from a misconfiguration on our side, or is Apache POI -> docx4j simply not a supported use case?
Best regards
Anton Oellerer
Re: Creating Table of Contents
Posted by Rob Sargent <ro...@gmail.com>.
On 6/22/22 07:41, PJ Fanning wrote:
> I have never come across anyone using POI and docx4j together.
> Maybe you would be better off using stackoverflow.com and providing a reproducible use case. A larger number of developers can be reached there.
>
>
> On Tuesday 21 June 2022, 08:56:51 IST, Anton Oellerer<a....@docu-tools.com> wrote:
>
> Hello,
> The project I am currently working on needs to hand over a .docx document with a finished table of contents to an API for pdf conversion.
> As far as I figured out, it is currently not possible to generate a finished TOC with Apache POI alone, so we decided to try using docx4j + Apache FOP to update the TOC after generating the document with Apache POI.
> In the first testing runs, we noticed that there are multiple errors in docx4j Apache FOP stemming from missing values, which prevent generating a valid document.
> Those include:
>
> * Cannot invoke "org.docx4j.wml.Style$Name.getVal()" because the return value of "org.docx4j.wml.Style.getName()" is null
> * org.docx4j.XmlUtils: java.lang.NullPointerException: Cannot invoke "org.w3c.dom.DocumentFragment.getFirstChild()" because "df" is null
> * java.lang.StringIndexOutOfBoundsException: begin 0, end -1, length 2 at org.docx4j.model.properties.run.Lang.setXslFO(Lang.java:71)
> * javax.xml.transform.TransformerException: org.apache.fop.fo.ValidationException: "fo:table-cell" is missing child elements. Required content model: marker* (%block;)+ (See position 9:3836)
>
> Do you know whether these results stem from a misconfiguration on our side, or is Apache POI -> docx4j simply not a supported use case?
> Best regards
> Anton Oellerer
>
>
It's been quite some time since I last used FOP, but these errors,
especially the fo:table-cell, look to me like the document has empty or
extraneous "containers". Maybe injecting a "saxon lint" step between
POI output and docx4j would be worthwhile.
Re: Creating Table of Contents
Posted by PJ Fanning <fa...@yahoo.com.INVALID>.
I have never come across anyone using POI and docx4j together.
Maybe you would be better off using stackoverflow.com and providing a reproducible use case. A larger number of developers can be reached there.
On Tuesday 21 June 2022, 08:56:51 IST, Anton Oellerer <a....@docu-tools.com> wrote:
Hello,
The project I am currently working on needs to hand over a .docx document with a finished table of contents to an API for pdf conversion.
As far as I figured out, it is currently not possible to generate a finished TOC with Apache POI alone, so we decided to try using docx4j + Apache FOP to update the TOC after generating the document with Apache POI.
In the first testing runs, we noticed that there are multiple errors in docx4j Apache FOP stemming from missing values, which prevent generating a valid document.
Those include:
* Cannot invoke "org.docx4j.wml.Style$Name.getVal()" because the return value of "org.docx4j.wml.Style.getName()" is null
* org.docx4j.XmlUtils: java.lang.NullPointerException: Cannot invoke "org.w3c.dom.DocumentFragment.getFirstChild()" because "df" is null
* java.lang.StringIndexOutOfBoundsException: begin 0, end -1, length 2 at org.docx4j.model.properties.run.Lang.setXslFO(Lang.java:71)
* javax.xml.transform.TransformerException: org.apache.fop.fo.ValidationException: "fo:table-cell" is missing child elements. Required content model: marker* (%block;)+ (See position 9:3836)
Do you know whether these results stem from a misconfiguration on our side, or is Apache POI -> docx4j simply not a supported use case?
Best regards
Anton Oellerer