Every MIME type, listed in one convenient table. Suffixes applicable, Media type and subtype(s).3dm, x-world/x-3dmf.3dmf, x-world/x-3dmf. MimeType – an actual MIME type holder – and tion. MimetypesFileTypeMap – class whose instance can resolve MIME type as String for a file. setDataHandler(new DataHandler(new ByteArrayDataSource(s, mimetype))); } catch At this point the datasource is actually a {@link ByteArrayDataSource}.

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Not every Java program is required to be portable.

With Apache Tika you need only three lines of code:. Finally got it up and running, mme replaced the classname string with the actual class. One bad thing about Tika, lots of dependency bloat. So, if you want to generalize, you’ll need to go beyond the built-in libraries, using, e. I have had a problem with software working on ubuntu but failing on windows.

It was not my system so I didn’t check the JRE or windows version. Chris Mowforth 5, 2 16 After trying various other libraries I settled with mime-util.

JavaMail API documentation

Apache Tika offers in tika-core a mime type detection based based on magic markers in the stream prefix. Whoever down-voted the answer, please add a comment so I and others may learn to post better answers. The first gave me memory exceptions, the second doesn’t close its streams off properly. It only leaves it locked because you’ve left yourself no way to close it.

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Lee Theobald 4, 11 40 I don’t know if I’m just doing something horribly wrong, but that seems rather terrible. That is why probeContentType method throws IOException, in case an implementation of this API uses Path provided to it to actually try to open the file associated with it. Perfect solution – helped me a lot!

FileTypeDetectorwhich defines a standard API for determining a file type in implementation specific way. As of Java 7, html, pdf and jpeg extensions return the correct mime-type but js and css return null!

I tested with ‘webm’ and it returned null. In Java 7 you can now just use Files. Yes, this works well.

Unfortunately, as the javadoc for getContentType File states: It probes the first bytes of the content and returns the content types based on that content and not by file extension. Look the complete test code Java This does not work with a stream or a byte array, etc.

Java Examples for javax.mail.util.ByteArrayDataSource

In some ideal world in a galaxy far, mkme away, all these libraries which try to solve this file-to-mime-type problem would simply implement java. Create file named ‘mime. I’m running on OS X I’ve published my SimpleMagic Java package which allows content-type mime-type determination from files and byte arrays. If you’re an Android developer, you can use a utility class android.


It is better to use two layer validation for files upload. First of all, MIME types list is hugesee here: I was just wondering how ttpe people fetch a mime type from a file in Java? Be aware that Files. Please note that MediaType. Stack Overflow works best with JavaScript enabled. Ovidiu Buligan 1, 18 You can do it with just one line: In its vanilla implementation this does not do much i. As of tika-core 1. Email Required, but never shown. All had extension renamed. This will work, but is IMO a bad practice as it ties your code to a specific OS and requires the external utility to be present at the system running it.

FileTypeDetectoryou would drop in the preferred implementing library’s jar file into your classpath and that would be it. Jul 29 ’15 at It is, however, super simple to add any content type you may need:. See the apidocs for more information.

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