Johan van der Knijff created TIKA-3969:
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Summary: 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
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:
{{java -jar ~/tika/tika-app-2.6.0.jar -t berk011veel01_01.epub >
berk011veel01_01_tika-app.txt}}
Output in this case is as expected.
So then I tried this using the server. After firing up the server I use this:
{{curl -T berk011veel01_01.epub http://localhost:9998/tika --header "Accept:
text/plain" > berk011veel01_01-tika-server.txt}}
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):
{{[image: cover]}}
{{Aster Berkhof
Veel geluk, professor!}}
{{[image: DBNL]}}
{{Colofon}}
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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