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https://issues.apache.org/jira/browse/TIKA-391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12924507#action_12924507
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Nick Burch commented on TIKA-391:
---------------------------------
application/x-tika-msoffice is to be expected in many cases when using the mime
magic detector on an OLE2 file with no filename specified. You just can't
reliably detect which kind of OLE2 based file format it is from the first few
kb.
You should really use the ContainerAwareDetector if you don't know the
filename, as it is able to open the OLE2 container and figure out the type from
the contents.
> Intermittent errors detecting xls files
> ---------------------------------------
>
> Key: TIKA-391
> URL: https://issues.apache.org/jira/browse/TIKA-391
> Project: Tika
> Issue Type: Bug
> Components: mime
> Affects Versions: 0.6
> Reporter: Simon Tyler
> Assignee: Chris A. Mattmann
> Fix For: 0.8
>
> Attachments: MimeTypes.java
>
>
> I am doing some testing of Tika 0.6 and noticed some odd results for the
> testEXCEL.xls file included in the test suite.
> 100 calls to the following code:
>
> is = new BufferedInputStream(new FileInputStream(filename));
>
> Metadata metadata = new Metadata();
> metadata.set(Metadata.RESOURCE_NAME_KEY, filename);
>
> String type = tika.detect(is, metadata);
>
> Results in different matches as application/msword or
> application/vnd.ms-excel seemingly at random.
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