o/s/mail/javamail mime.types PNG mapped to image/x-png [SPR-15546]

[spring-projects-issues]

Matt Magoffin opened SPR-15546 and commented

I have an app that ends up using Spring's org.springframework.http.converter.ActivationMediaTypeFactory which configured the org/springframework/mail/javamail/mime.types file with the Java Activation Framework. That file, however, resolves PNG images as the *image/x-png* image type, which I only noticed because my version of Safari (10.1; OS X) refuses to display images with that MIME type.

I believe the official MIME type for PNG images is *image/png* and thus believe this file could be changed to reflect that, instead of image/x-png.

For what it's worth, I notice the org/springframework/http/mime.types file uses image/png already.

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Affects: 4.3.7

Issue Links:

• o/s/mail/javamail mime.types has duplicate image/jpeg entries [SPR-15557] #20116 o/s/mail/javamail mime.types has duplicate image/jpeg entries
• Add cpp to mime.types as text/plain [SPR-16678] #21219 Add cpp to mime.types as text/plain

Referenced from: commits e835f4d, f80b2d9

[spring-projects-issues]

Matt Magoffin commented

Thanks for fixing!