使用Azurefunction损坏已resize的图像

我有一个带有一个输入和两个输出的azurefunction应用程序。 在这种情况下，每当图像上传到容器：原件时，将触发function应用程序，这将生成两个缩略图图像。

码：

using System; using System.Text; using System.Net.Http; using System.Net.Http.Headers; using System.Collections.Generic; public static void Run(Stream myBlob,string blobname, string blobextension, Stream outputBlobsm,Stream outputBlobmd, TraceWriter log) { bool smartCropping = true; log.Info($"C# Blob trigger function Processed blob\n Name:{blobname} \n Extension: {blobextension} extension"); var sizesm = imageDimensionsTable[ImageSize.Small]; log.Info($"C# Blob \n width:{sizesm.Item1} \n height: {sizesm.Item2}"); ResizeImage(sizesm.Item1, sizesm.Item2,smartCropping,myBlob, outputBlobsm); var sizemd = imageDimensionsTable[ImageSize.Medium]; log.Info($"C# Blob \n width:{sizemd.Item1} \n height: {sizemd.Item2}"); ResizeImage(sizemd.Item1, sizemd.Item2,smartCropping,myBlob, outputBlobmd); } public static void ResizeImage(int width, int height, bool smartCropping,Stream myBlob, Stream outputBlob) { string _apiKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; string _apiUrlBase = "xxxxxxxxxxxxxxxxxxxxxxxxxxx/generateThumbnail"; using (var httpClient = new HttpClient()) { httpClient.BaseAddress = new Uri(_apiUrlBase); httpClient.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", _apiKey); using (HttpContent content = new StreamContent(myBlob)) { //get response content.Headers.ContentType = new MediaTypeWithQualityHeaderValue("application/octet-stream"); var uri = $"{_apiUrlBase}?width={width}&height={height}&smartCropping={smartCropping.ToString()}"; var response = httpClient.PostAsync(uri, content).Result; var responseBytes = response.Content.ReadAsByteArrayAsync().Result; //write to output thumb outputBlob.Write(responseBytes, 0, responseBytes.Length); } } } public enum ImageSize { ExtraSmall, Small, Medium } private static Dictionary imageDimensionsTable = new Dictionary() { { ImageSize.ExtraSmall, (320, 200) }, { ImageSize.Small, (640, 400) }, { ImageSize.Medium, (800, 600) } }; 

任何人都可以帮我解决这个问题。