C#获取七牛云token/删除七牛云图片接口

// 获取七牛token

        public ApiResponse GetQiniuToken(QiniuToken req)

        {

            try

            {

                Mac mac = new Mac(req.AccessKey, req.SecretKey);

                PutPolicy putPolicy = new PutPolicy();

                // putPolicy.Scope = req.Bucket + ":" + key;

                putPolicy.Scope = req.Bucket;

                putPolicy.SetExpires();

                putPolicy.DeleteAfterDays = ;

                string token = Auth.CreateUploadToken(mac, putPolicy.ToJsonString());

                return Success(token);

            }

            catch (Exception ex)

            {

                return Failed("查询七牛token时发生异常，错误描述：" + ex.Message);

            }

        }　

【putPolicy.DeleteAfterDays = 1;　这是个坑，默认值为1，会导致使用接口上传的图片1天后默认删除，所以记得修改官方demo中的默认值。】

// 删除七牛云空间图片

        public ApiResponse DelQiniuPic(QiniuDel req)

        {

            try

            {

                // 空间名

                string Bucket = req.Bucket;

                // 文件名

                string Key = req.Key;

                // 设置存储区域

                Config config = new Config();

                config.Zone = Zone.ZONE_CN_East;

                Mac mac = new Mac(req.AccessKey, req.SecretKey);

                BucketManager bucketManager = new BucketManager(mac, config);

                HttpResult deleteRet = bucketManager.Delete(Bucket, Key);

                Console.WriteLine("delete error: " + deleteRet.ToString());

                if (deleteRet.Code != (int)HttpCode.OK)

                {

                    Console.WriteLine("delete error: " + deleteRet.ToString());

                }

                return Success("已成功删除七牛云端图片！");

            }

            catch (Exception ex)

            {

                return Failed("删除七牛图片时发生异常，错误描述：" + ex.Message);

            }

        }

【此外，对于调用删除接口，链接地址任然能访问的情况，需要清空CDN缓存　https://portal.qiniu.com/cdn/refresh-prefetch】