I would like receive vide/mp4 mime-type after passing filename xxx.mp4 in java

Question

Is there any API in Java that can return the mime-type or content-Type as video/mp4 if I pass it .mp4 extension or complete filename?

Thanks

Answer 1

You can use the java.nio.file.Files#ProbeFileContent(path) which will by default use a extension-detector unless you have havnt registered any other java.nio.file.spi.FileTypeDetector:s

public class Main {
    public static void main(String[] argv) throws Throwable {
        Path path = Paths.get("c:/test.mp4");
        String contentType = Files.probeContentType(path);

        System.out.println(contentType);
    }
}

will output:

video/mp4

Answer 2

I've recently released my SimpleMagic package which implements the same functionality as the Unix file(1) command. It uses either internal config files or can read /etc/magic, /usr/share/file/magic, or other magic(5) files and determine file content from File, InputStream, or byte[]. It actually uses the content bytes of the file instead of just the name however.

Location of the github sources, javadocs, and some documentation are available from the home page.