[jira] [Commented] (TIKA-3969) Inconsistent behavior on EPUB text extraction between tika-server and tika-app

["Tim Allison (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TIKA-3969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17686114#comment-17686114 ] 

Tim Allison commented on TIKA-3969:
-----------------------------------

This isn't you.  This is us.  There's a subtle difference in the handlers used in tika-app and tika-server.  We're using the "RichTextContentHandler" in server but not in app.  I think I've known about this for a while, but we'll be breaking behavior for whichever one we fix.

Any recommendations?

> Inconsistent behavior on EPUB text extraction between tika-server and tika-app
> ------------------------------------------------------------------------------
>
>                 Key: TIKA-3969
>                 URL: https://issues.apache.org/jira/browse/TIKA-3969
>             Project: Tika
>          Issue Type: Improvement
>          Components: tika-app, tika-server
>    Affects Versions: 2.6.0
>         Environment: I’m using a -smart toaster- PC running Linux Mint 20.1 (Ulyssa), MATE edition.
>            Reporter: Johan van der Knijff
>            Priority: Minor
>
> While doing some tests with Tika for text extraction from EPUB, I ran into what looks like an inconsistency between the behavior of Tika-app and Tika-server.
> I’m using below EPUB file as an example:
> [https://www.dbnl.org/tekst/berk011veel01_01/ebook/berk011veel01_01.epub]
> Using the tika-app JAR, I can extract the text from this EPUB using this command:
> {code:java}
> java -jar ~/tika/tika-app-2.6.0.jar -t berk011veel01_01.epub > berk011veel01_01_tika-app.txt{code}
> Output in this case is as expected.
> So then I tried this using the server. After firing up the server I use this:
> {code:java}
> curl -T berk011veel01_01.epub http://localhost:9998/tika --header "Accept: text/plain" > berk011veel01_01-tika-server.txt{code}
> In this case, Tika’s output contains elements (between square brackets) with alt-text descriptions of images. For example (from the first page of this book):
>  
> {noformat}
> [image: cover]
> Aster Berkhof
> Veel geluk, professor!
> [image: DBNL]
> Colofon
> {noformat}
>  
> These image references + alt-text description don't appear in the tika-app output! Not sure if this is the intended behavior, or perhaps I’m doing something wrong myself, or I’m missing some obvious option?
> See also this related Tika-python issue (I initially thought this was a Tika-python problem, which on closer inspection it isn't):
> [https://github.com/chrismattmann/tika-python/issues/389]
>  



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