Example #1
0
        private async Task <ImageMessage> InternalUploadPictureAsync(PictureTarget type, Stream image)
        {
            HttpContent sessionKeyContent = new StringContent(SessionInfo.SessionKey);

            sessionKeyContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name = "sessionKey"
            };
            HttpContent typeContent = new StringContent(type.ToString().ToLower());

            typeContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name = "type"
            };
            HttpContent imageContent = new StreamContent(image);

            typeContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name = "img"
            };
            HttpContent[] contents = new HttpContent[]
            {
                sessionKeyContent,
                typeContent,
                imageContent
            };
            using JsonDocument j = await HttpHelper.HttpPostAsync($"{SessionInfo.Options.BaseUrl}/uploadImage", contents);

            JsonElement root = j.RootElement;
            int         code = root.GetProperty("code").GetInt32();

            if (code == 0)
            {
                return(Utils.Deserialize <ImageMessage>(in root));
            }
            return(ThrowCommonException <ImageMessage>(code, in root));
        }
Example #2
0
        private async Task <ImageMessage> InternalUploadPictureAsync(PictureTarget type, Stream imgStream)
        {
            if (ApiVersion <= new Version(1, 7, 0))
            {
                Guid guid = Guid.NewGuid();
                ImageHttpListener.RegisterImage(guid, imgStream);
                return(new ImageMessage(null, $"http://127.0.0.1:{ImageHttpListener.Port}/fetch?guid={guid:n}", null));
            }
            HttpContent sessionKeyContent = new StringContent(SessionInfo.SessionKey);

            sessionKeyContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name = "sessionKey"
            };
            HttpContent typeContent = new StringContent(type.ToString().ToLower());

            typeContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name = "type"
            };
            string format;

            using (Image img = Image.FromStream(imgStream))
            {
                format = img.RawFormat.ToString();
                switch (format)
                {
                case nameof(ImageFormat.Jpeg):
                case nameof(ImageFormat.Png):
                case nameof(ImageFormat.Gif):
                {
                    format = format.ToLower();
                    break;
                }

                default:     // 不是以上三种类型的图片就强转为Png
                {
                    MemoryStream ms = new MemoryStream();
                    img.Save(ms, ImageFormat.Png);
                    imgStream.Dispose();
                    imgStream = ms;
                    format    = "png";
                    break;
                }
                }
            }
            imgStream.Seek(0, SeekOrigin.Begin);
            HttpContent imageContent = new StreamContent(imgStream);

            imageContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name     = "img",
                FileName = $"{Guid.NewGuid():n}.{format}"
            };
            imageContent.Headers.ContentType = new MediaTypeHeaderValue("image/" + format);
            HttpContent[] contents = new HttpContent[]
            {
                sessionKeyContent,
                typeContent,
                imageContent
            };
            try
            {
                using JsonDocument j = await HttpHelper.HttpPostAsync($"{SessionInfo.Options.BaseUrl}/uploadImage", contents).GetJsonAsync(token: SessionInfo.Canceller.Token);

                JsonElement root = j.RootElement;
                if (root.TryGetProperty("code", out JsonElement code)) // 正常返回是没有code的
                {
                    return(ThrowCommonException <ImageMessage>(code.GetInt32(), in root));
                }
                return(Utils.Deserialize <ImageMessage>(in root));
            }
            catch (JsonException) // https://github.com/mamoe/mirai-api-http/issues/85
            {
                throw new NotSupportedException("当前版本的mirai-api-http无法发送图片。");
            }
        }
        /// <summary>
        /// 内部使用
        /// </summary>
        /// <exception cref="InvalidOperationException"/>
        /// <param name="type">目标类型</param>
        /// <param name="imgStream">图片流</param>
        /// <remarks>
        /// 注意: 当 mirai-api-http 的版本小于等于v1.7.0时, 本方法返回的将是一个只有 Url 有值的 <see cref="ImageMessage"/>
        /// </remarks>
        /// <returns>一个 <see cref="ImageMessage"/> 实例, 可用于以后的消息发送</returns>
        private Task <ImageMessage> InternalUploadPictureAsync(InternalSessionInfo session, PictureTarget type, Stream imgStream)
        {
            if (session.ApiVersion <= new Version(1, 7, 0))
            {
                Guid guid = Guid.NewGuid();
                ImageHttpListener.RegisterImage(guid, imgStream);
                return(Task.FromResult(new ImageMessage(null, $"http://127.0.0.1:{ImageHttpListener.Port}/fetch?guid={guid:n}", null)));
            }
            HttpContent sessionKeyContent = new StringContent(session.SessionKey);

            sessionKeyContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name = "sessionKey"
            };
            HttpContent typeContent = new StringContent(type.ToString().ToLower());

            typeContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name = "type"
            };
            string format;

            using (Image img = Image.FromStream(imgStream))
            {
                format = img.RawFormat.ToString();
                switch (format)
                {
                case nameof(ImageFormat.Jpeg):
                case nameof(ImageFormat.Png):
                case nameof(ImageFormat.Gif):
                {
                    format = format.ToLower();
                    break;
                }

                default:     // 不是以上三种类型的图片就强转为Png
                {
                    MemoryStream ms = new MemoryStream();
                    img.Save(ms, ImageFormat.Png);
                    imgStream.Dispose();
                    imgStream = ms;
                    format    = "png";
                    break;
                }
                }
            }
            imgStream.Seek(0, SeekOrigin.Begin);
            HttpContent imageContent = new StreamContent(imgStream);

            imageContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name     = "img",
                FileName = $"{Guid.NewGuid():n}.{format}"
            };
            imageContent.Headers.ContentType = new MediaTypeHeaderValue("image/" + format);
            HttpContent[] contents = new HttpContent[]
            {
                sessionKeyContent,
                typeContent,
                imageContent
            };
            return(InternalHttpPostNoSuccCodeAsync <ImageMessage, ImageMessage>(session.Client, $"{session.Options.BaseUrl}/uploadImage", contents, session.Token)
                   .ContinueWith(t => t.IsFaulted && t.Exception !.InnerException is JsonException ? Task.FromException <ImageMessage>(new NotSupportedException("当前版本的mirai-api-http无法发送图片。")) : t, TaskContinuationOptions.ExecuteSynchronously).Unwrap());
            //  ^-- 处理 JsonException 到 NotSupportedException, https://github.com/mamoe/mirai-api-http/issues/85
        }