C# 从SOAP响应获取附件并保存文件

我正在使用webservice，它在带有附件的SOAP中给出响应。 我用邮递员捕捉到的反应是

--MIMEBoundaryurn_uuid_C455EAC131FBC506CE1521805985220
Content-Type: text/xml; charset=UTF-8
Content-Transfer-Encoding: 8bit
Content-ID: <0.urn:uuid:C455EAC131FBC506CE1521805985221@apache.org>

<?xml version='1.0' encoding='UTF-8'?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><ns:downloadDocInFileResponse xmlns:ns="http://provider.ws.jts.omni.newgen.com"><ns:return><swa:fileName xmlns:swa="http://provider.ws.jts.omni.newgen.com"><swa:graph>urn:uuid:C455EAC131FBC506CE1521805985219</swa:graph><swa:message>file download on server successfully</swa:message></swa:fileName></ns:return></ns:downloadDocInFileResponse></soapenv:Body></soapenv:Envelope>
--MIMEBoundaryurn_uuid_C455EAC131FBC506CE1521805985220
Content-Type: application/octet-stream
Content-Transfer-Encoding: binary
Content-ID: <urn:uuid:C455EAC131FBC506CE1521805985219>

II*----binary content----

---

但是文件正在被破坏。

处理完这个问题后，我在MultipartMemoryStreamProvider的帮助下找到了解决方案

 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
        {

           String retVal = readMultipart(response).Result;
        }

async static Task<string> readMultipart(HttpWebResponse httpResponse)
        {
            var content = new StreamContent(httpResponse.GetResponseStream());
            content.Headers.Add("Content-Type", httpResponse.ContentType);


            MultipartMemoryStreamProvider multipart = new MultipartMemoryStreamProvider();
            Task.Factory.StartNew(() => multipart = content.ReadAsMultipartAsync().Result,
               CancellationToken.None,
               TaskCreationOptions.LongRunning, // guarantees separate thread
               TaskScheduler.Default)
               .Wait();
            String filename = "";
            String json = await multipart.Contents[0].ReadAsStringAsync();


            string path = HttpContext.Current.Server.MapPath("/test.jpeg");
            byte[] fileData = multipart.Contents[1].ReadAsByteArrayAsync().Result;
            System.IO.File.WriteAllBytes(path, fileData);
            return json;
        }

使用（HttpWebResponse=（HttpWebResponse）request.GetResponse（））
{
字符串retVal=readMultipart（响应）.Result；
}
异步静态任务readMultipart（HttpWebResponse httpResponse）
{
var content=newstreamcontent（httpResponse.GetResponseStream（））；
添加（“内容类型”，httpResponse.ContentType）；
MultipartMemoryStreamProvider multipart=新的MultipartMemoryStreamProvider（）；
Task.Factory.StartNew（（）=>multipart=content.ReadAsMultipartAsync（）.Result，
取消令牌。无，
TaskCreationOptions.LongRunning，//保证独立线程
TaskScheduler.Default）
.Wait（）；
字符串filename=“”；
字符串json=await multipart.Contents[0]。ReadAsStringAsync（）；
字符串路径=HttpContext.Current.Server.MapPath（“/test.jpeg”）；
byte[]fileData=multipart.Contents[1]。ReadAsByteArrayAsync（）.Result；
System.IO.File.writealBytes（路径、文件数据）；
返回json；
}

我怀疑pdf是ascii编码的。试试UTF-8。太棒了，它能用！！我为此奋斗了很多，谢谢你

 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
        {

           String retVal = readMultipart(response).Result;
        }

async static Task<string> readMultipart(HttpWebResponse httpResponse)
        {
            var content = new StreamContent(httpResponse.GetResponseStream());
            content.Headers.Add("Content-Type", httpResponse.ContentType);


            MultipartMemoryStreamProvider multipart = new MultipartMemoryStreamProvider();
            Task.Factory.StartNew(() => multipart = content.ReadAsMultipartAsync().Result,
               CancellationToken.None,
               TaskCreationOptions.LongRunning, // guarantees separate thread
               TaskScheduler.Default)
               .Wait();
            String filename = "";
            String json = await multipart.Contents[0].ReadAsStringAsync();


            string path = HttpContext.Current.Server.MapPath("/test.jpeg");
            byte[] fileData = multipart.Contents[1].ReadAsByteArrayAsync().Result;
            System.IO.File.WriteAllBytes(path, fileData);
            return json;
        }