csharp 客户端发送SOAP请求并接收响应

Posted 2021-05-11

using System.Xml;
using System.Net;
using System.IO;

public static class SOAP
    {
        public static void CallWebService()
        {
            var _url = "http://www.oorsprong.org/websamples.countryinfo/CountryInfoService.wso";
            var _action = "http://www.oorsprong.org/websamples.countryinfo/CountryInfoService.wso?op=ListOfContinentsByName";

            XmlDocument soapEnvelopeXml = CreateSoapEnvelope();
            HttpWebRequest webRequest = CreateWebRequest(_url, _action);
            InsertSoapEnvelopeIntoWebRequest(soapEnvelopeXml, webRequest);

            // begin async call to web request.
            IAsyncResult asyncResult = webRequest.BeginGetResponse(null, null);

            // suspend this thread until call is complete. You might want to
            // do something usefull here like update your UI.
            asyncResult.AsyncWaitHandle.WaitOne();

            // get the response from the completed web request.
            string soapResult;
            using (WebResponse webResponse = webRequest.EndGetResponse(asyncResult))
            {
                using (StreamReader rd = new StreamReader(webResponse.GetResponseStream()))
                {
                    soapResult = rd.ReadToEnd();
                }
                Console.Write(soapResult);
            }
        }

        private static HttpWebRequest CreateWebRequest(string url, string action)
        {
            HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
            webRequest.Headers.Add("SOAPAction", action);
            webRequest.ContentType = "text/xml;charset=\"utf-8\"";
            webRequest.Accept = "text/xml";
            webRequest.Method = "POST";
            return webRequest;
        }

        private static XmlDocument CreateSoapEnvelope()
        {
            XmlDocument soapEnvelopeDocument = new XmlDocument();
            soapEnvelopeDocument.LoadXml(@"<?xml version=""1.0"" encoding=""utf-8""?>
                                        <soap:Envelope xmlns:soap=""http://schemas.xmlsoap.org/soap/envelope/"">
                                            <soap:Body>
                                            <ListOfContinentsByName xmlns = ""http://www.oorsprong.org/websamples.countryinfo"">
                                            </ListOfContinentsByName>
                                            </soap:Body>
                                        </soap:Envelope>");
            return soapEnvelopeDocument;
        }

        private static void InsertSoapEnvelopeIntoWebRequest(XmlDocument soapEnvelopeXml, HttpWebRequest webRequest)
        {
            using (Stream stream = webRequest.GetRequestStream())
            {
                soapEnvelopeXml.Save(stream);
            }
        }
    }