webapi 上传文件，"MIME 多节流出现意外的结尾。MIME 多节消息不完整" 错误提示问题

戢翔 2021-04-25 11:26:45

我的目的是想上传多个文件的同时，传入参数body。以下是代码，在小文件上传时没什么问题，但是大文件或者多线程上传就会报错，请问大家知道是什么原因导致的吗？



//客户端代码

using (var stream = new FileStream(@"e:\\上传测试.pdf", FileMode.Open, FileAccess.Read))

            {

                using (var client = new HttpClient())

                {

                    using (var multiContent = new MultipartFormDataContent())

                    {

                        var bodyContent = new StringContent(Newtonsoft.Json.JsonConvert.SerializeObject(content), Encoding.UTF8);

                        bodyContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("body");      



                        stream.Position = 0;

                        var streamContent = new StreamContent(stream);

                        streamContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");



                        //上传body

                        multiContent.Add(bodyContent);

                        //上传文件流

                        multiContent.Add(streamContent);



                        var multiResult = client.PostAsync(url, multiContent).Result;

                    }

                }

            }



//服务端代码

[HttpPost]

        public HttpResponseMessage Test()

        {

                var provider = new MultipartMemoryStreamProvider();

            Task.Factory.StartNew(() => provider = base.Request.Content.ReadAsMultipartAsync().Result, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default).Wait();

            foreach (var item in provider.Contents)

            {

                //读取body参数

                if (item.Headers.ContentDisposition.DispositionType == "body")

                {

                  

                }

                //读取文件流

                if (item.Headers.ContentDisposition.DispositionType == "attachment")

                {



                }

            }



                return new HttpResponseMessage(System.Net.HttpStatusCode.OK);

        }