七牛云存储 - 七牛 mkzip java一直没有成功，请大牛帮忙？

执行mkzip 可以正常返回persistentId，但是无法在空间里找到压缩后的zip文件

private static final Auth auth = Auth.create(ACCESS_KEY, SECRET_KEY);
private static final String bucketname = "xxx";
public static void mkzipTest() {
        OperationManager om = new OperationManager(auth);
        String u = "http://7xsqur.com2.z0.glb.clouddn.com/gogopher.jpg";
        String saveas = "abc.zip";
        String fops = "mkzip/2/url/" +UrlSafeBase64.encodeToString(u)+ "|saveas/"+UrlSafeBase64.encodeToString(saveas);
        System.out.println(fops);
        try {
            String pfop = om.pfop(bucketname, "test.zip", fops);
            System.out.println(pfop);
        } catch (QiniuException e) {
            Response r = e.response;
            // 请求失败时打印的异常的信息
            // System.out.println(r.toString());
            try {
                // 响应的文本信息
                System.out.println(r.bodyString());
            } catch (QiniuException e1) {
                // ignore
            }
        }
    }