从 SOAP 响应中获取附件并保存文件

Question

我正在使用网络服务，它在带有附件的 SOAP 中给出响应。我使用邮递员捕获的响应是

--MIMEBoundaryurn_uuid_C455EAC131FBC506CE1521805985220
Content-Type: text/xml; charset=UTF-8
Content-Transfer-Encoding: 8bit
Content-ID: <0.urn:uuid:[e-mail]>
<?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----

我的代码是

    using (WebResponse response = request.GetResponse())
                {
                    using (StreamReader rd = new StreamReader(response.GetResponseStream()))
                    {
                        string soapResult = rd.ReadToEnd();
                        retVal = soapResult;
                        byte[] temp = Encoding.ASCII.GetBytes(soapResult);
                    }
                }
 var binaryString = ToBinary(ConvertToByteArray(retVal, Encoding.ASCII));
            byte[] bytes = Convert.FromBase64String(binaryString);
            string path = HttpContext.Current.Server.MapPath("/test.pdf");
            File.WriteAllBytes(path, bytes);

但是文件已损坏。

Answer 1

在处理这个问题之后，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;
        }