In AJAX response Content-Type: Detected Wrongly

[indvinoth]

When a AJAX call is made to download an Excel file, the server responds with an Excel file and server sets the content type as below
Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
When jQuery reads the response it detects the content type as xml since in the content type contains the word 'xml' in openxmlformats. So jquery tries to parse the binary file as xml and triggers error

The content type is wrongly detected in the following function
function ajaxHandleResponses( s, jqXHR, responses )

jQuery Version used: 1.11.3

[dmethvin]

I agree that's a pretty sloppy check. At this point I am concerned to think what will happen if we make the check more strict. The best solution for your case is to be explicit about the dataType and not let us use the infamous and misnamed "intelligent guess" algorithm, which in this case is not so smart.

As for whether we can or will change the intelligent guess algorithm, that's a discussion we need to have.

[mgol]

I added the "Needs review" label to discuss it at the meeting.

This sounds like a bug to me, IMO we should fix it for 3.0.0.

[markelog]

/cc @jaubourg

[jaubourg]

Out the top of my hat, I'd say replacing /xml/ with /\bxml\b/ should do the trick.

[markelog]

aam, what about text/xml? we should do it for the other types as well then

[jaubourg]

aam, what about text/xml? we should do it for the other types as well then

You wouldn't catch stuff like application/rss+xml.

Anyway, we just need to make sure we don't catch xml as part of a word which /\bxml\b/ ensures. All dataType detection regexps should follow the same pattern.