七牛云以图搜图(java)

最近项目需要用到以图搜图，搜索了第三方产品，并且分析了项目需求，最终选择七牛云以图搜图，然而，七牛云文档就是个坑，只有php的demo，而java的却没有，联系客服几天才给java的demo

    static final String accessKey = "xxxxxxxxx";
    static final String secretKey = "xxxxxxxxxx";
    static final String url_add_ku = "http://ai.qiniuapi.com/v1/image/group/test/new";
    static final String url_del_ku = "http://ai.qiniuapi.com/v1/image/group/test/remove";
    static final String url_show_all_ku = "http://ai.qiniuapi.com/v1/image/group";  //get
    static final String url_add_image = "http://ai.qiniuapi.com/v1/image/group/test/add";
    static final String url_del_image = "http://ai.qiniuapi.com/v1/image/group/test/delete";
    static final String url_show_image = "http://ai.qiniuapi.com/v1/image/group/test?limit=100";  //显示指定图像库中所有图片

    static final String url_search_image = "http://ai.qiniuapi.com/v1/image/groups/search";  //以图搜图

    public static void main(String[] args) {
        StringMap headers = new StringMap();
        headers.put("Authorization", qiniuToken());
        try {
            Client client = new Client();
            Response resp = client.post(url_search_image, json().getBytes(), headers, Client.JsonMime);
            System.out.println(resp.toString());
            System.out.println(resp.bodyString());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    static String qiniuToken() {
        Auth auth = Auth.create(accessKey, secretKey);
        String authorization = (String) auth.authorizationV2(url_search_image, "POST", json().getBytes(), Client.JsonMime).get("Authorization");
        System.out.println(authorization);
        return authorization;
    }

    static String json() {
        //return "{\"data\": [{\"uri\": \"https://mars-assets.qnssl.com/resource/gogopher.jpg\"}]}";   //创建图库
        //return "{\"data\": [{\"uri\": \"https://ss0.bdstatic.com/6Ox1bjeh1BF3odCf/it/u=2051025535,674887090&fm=74&app=80&f=JPEG&size=f121,140?sec=1880279984&t=c1e41bea92f6fae086d003cc9e0fcc4d\",\"attribute\": {\"id\": \"1\",\"label\": \"标签\",\"desc\": \"描述\"}}]}";  //添加图库
        return "{\"data\": {\"uri\": \"https://ss0.bdstatic.com/6Ox1bjeh1BF3odCf/it/u=2051025535,674887090&fm=74&app=80&f=JPEG&size=f121,140?sec=1880279984&t=c1e41bea92f6fae086d003cc9e0fcc4d\"},\"params\": {\"groups\": [\"test\"],\"limit\": 5,\"threshold\": 0.85}}";
    }