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https://issues.apache.org/jira/browse/TIKA-2518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16304958#comment-16304958
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Ewan Mellor commented on TIKA-2518:
-----------------------------------
It looks like this is being fixed under TIKA-2490.
> tika app outputs warnings by default
> ------------------------------------
>
> Key: TIKA-2518
> URL: https://issues.apache.org/jira/browse/TIKA-2518
> Project: Tika
> Issue Type: Bug
> Components: app
> Affects Versions: 1.16
> Reporter: Ryan Brueske
>
> upon downloading the latest tika and trying basic commands it spews unwanted
> warnings, which makes parsing output necessary.
> Example 1:
> {code}
> java -jar tika-app-1.16.jar --list-detectors
> Dec 05, 2017 3:16:13 PM org.apache.tika.config.InitializableProblemHandler$3
> handleInitializableProblem
> WARNING: JBIG2ImageReader not loaded. jbig2 files will be ignored
> See https://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
> for optional dependencies.
> TIFFImageWriter not loaded. tiff files will not be processed
> See https://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
> for optional dependencies.
> J2KImageReader not loaded. JPEG2000 files will not be processed.
> See https://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
> for optional dependencies.
> Dec 05, 2017 3:16:13 PM org.apache.tika.config.InitializableProblemHandler$3
> handleInitializableProblem
> WARNING: org.xerial's sqlite-jdbc is not loaded.
> Please provide the jar on your classpath to parse sqlite files.
> See tika-parsers/pom.xml for the correct version.
> org.apache.tika.detect.DefaultDetector (Composite Detector):
> org.apache.tika.parser.microsoft.POIFSContainerDetector
> org.apache.tika.parser.pkg.ZipContainerDetector
> org.gagravarr.tika.OggDetector
> org.apache.tika.mime.MimeTypes
> {code}
> Example 2:
> {code}
> java -jar tika-app-1.16.jar --text my.xlsx
> Dec 05, 2017 3:00:22 PM org.apache.tika.config.InitializableProblemHandler$3
> handleInitializableProblem
> WARNING: JBIG2ImageReader not loaded. jbig2 files will be ignored
> See https://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
> for optional dependencies.
> TIFFImageWriter not loaded. tiff files will not be processed
> See https://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
> for optional dependencies.
> J2KImageReader not loaded. JPEG2000 files will not be processed.
> See https://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
> for optional dependencies.
> Dec 05, 2017 3:00:22 PM org.apache.tika.config.InitializableProblemHandler$3
> handleInitializableProblem
> WARNING: org.xerial's sqlite-jdbc is not loaded.
> Please provide the jar on your classpath to parse sqlite files.
> See tika-parsers/pom.xml for the correct version.
> INFO As a convenience, TikaCLI has turned on extraction of
> inline images for the PDFParser (TIKA-2374).
> This is not the default option in Tika generally or in tika-server.
> As a convenience, TikaCLI has turned on extraction of
> inline images for the PDFParser (TIKA-2374).
> This is not the default option in Tika generally or in tika-server.
> {code}
> The expected behavior is to return only the requested information. I do not
> see a switch to turn off or control unrequested warnings.
> I can't imagine this is the correct behavior. It is not documented, nor could
> I find why such output exists.
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