File Upload to image for java controller

Hi，
If I want use java controller， what can I do?

public IHttpActionResult Staff()
{
var request = HttpContext.Current.Request;
var settings = Properties.Settings.Default;

using (var db = new Database(settings.DbType, settings.DbConnection))
{
    var response = new Editor(db, "staff")
        .Model<StaffModel>()
        .Process(request)
        .Data();

    return Json(response);
}

}