public static URI createUri(final String uri) {
        if (StringUtils.isNotBlank(uri)) {
            return URI.create(uri);
        }
        return null;
    }
create URI {@link URI}.

@param uri uri string eg:/fallback
@return created {@link URI} from uri
shenyu-common/src/main/java/org/apache/shenyu/common/utils/UriUtils.java