if (contentType.startsWith(MULTIPART))
if (contentType.toLowerCase().startsWith(MULTIPART))
    public static final boolean isMultipartContent(HttpServletRequest req)    {        String contentType = req.getHeader(CONTENT_TYPE);        if (contentType == null)        {            return false;        }        if (contentType.startsWith(MULTIPART))        {            return true;        }        return false;    }