Spring Boot 2 - get MIME Type by file extension

In this short article, we would like to show how in Spring Boot 2 get MIME Type when we know file extension.

Quick solution:

// import org.springframework.boot.web.server.MimeMappings;

String mimeType = MimeMappings.DEFAULT.get("png");  // image/png

Practical example

To find MIME Type when we know file extension we can use MimeMappings class.

import org.springframework.boot.web.server.MimeMappings;

public class Program {

    public static void main(String[] args) {

        String fileExtension = "png";
        String mimeType = MimeMappings.DEFAULT.get(fileExtension);

        System.out.println(mimeType);  // image/png
    }
}

See also

1. Java - get file extension