Re: [jaf-dev] Activation not seeing PNG MIME type

[Bill Shannon <bill.shannon@xxxxxxxxxx>]

    Since you're using JDK 1.8, you're getting the version of JAF
    bundled with JDK 1.8.  That older version has an older
    mimetypes.default file that is missing the entry for PNG.
    
    If you want to use Jakarta Activation 1.2.1, you'll need to add it
    to the bootstrap class path so it's loaded before the builtin
    version.

Thad Humphries wrote on 1/9/20 8:42 AM:

Although PNG is listed in activation/src/main/resources/META-INF/mimetypes.default, I am not getting "image/png" from MimetypesFileTypeMap. Instead I'm getting "application/octet-stream".

The following code

System.out.printf("Java version %s\n", System.getProperties().getProperty("java.version"));

System.out.printf("Java vendor %s\n", System.getProperties().getProperty("java.vm.vendor"));
System.out.printf("Java name %s\n", System.getProperties().getProperty("java.vm.name"));

MimetypesFileTypeMap mimeMap = new MimetypesFileTypeMap();

System.out.printf("tiff %s\n", mimeMap.getContentType("foo.tiff"));

System.out.printf("jpg %s\n", mimeMap.getContentType("foo.jpg"));

System.out.printf("html %s\n", mimeMap.getContentType("foo.html"));

System.out.printf("png %s\n", mimeMap.getContentType("foo.png"));

System.out.printf("rtf %s\n", mimeMap.getContentType("foo.rtf"));

System.out.printf("unknown %s\n", mimeMap.getContentType("foo.unk"));

yields:

Java version 1.8.0_222

Java vendor Amazon.com Inc.
Java name OpenJDK 64-Bit Server VM

tiff image/tiff

jpg image/jpeg

html text/html

png application/octet-stream

rtf application/rtf

unknown application/octet-stream

I'm using jakarta.activation-api-1.2.1.jar from Maven Central and OpenJDK 1.8.0_222 from Amazon Corretto.

--

"Hell hath no limits, nor is circumscrib'd In one self-place; but where we are is hell, And where hell is, there must we ever be" --Christopher Marlowe, Doctor Faustus (v. 111-13)

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