无返回值，soap方式调用WebService

using System;using System.Web;using System.Xml;using System.Collections;using System.Net;using System.Text;using System.IO;using System.Xml.Serialization;

namespace XTask.Common.Net{    /// <summary>    ///  利用WebRequest/WebResponse进行WebService调用的类    /// </summary>    public class WebSvcCaller    {        //试试配置文件中加以下内容        //<webServices>        //  <protocols>        //    <add name="HttpGet"/>        //    <add name="HttpPost"/>        //  </protocols>        //</webServices>

        private static Hashtable _xmlNamespaces = new Hashtable();//缓存xmlNamespace，避免重复调用GetNamespace

        /// <summary>        /// 调用webService        /// </summary>        /// <param name="URL">格式如：http://localhost/emailws/emailService.asmx/HelloWorld</param>        public static void QuerySoapWebServiceNoReturn(String URL)        {            string MethodName = URL.Substring(URL.LastIndexOf("/")+1);            string realUrl = URL.Substring(0, URL.LastIndexOf("/"));

            if (_xmlNamespaces.ContainsKey(URL))            {                QuerySoapWebService(realUrl, MethodName, null, _xmlNamespaces[realUrl].ToString());            }            else            {                QuerySoapWebService(realUrl, MethodName, null, GetNamespace(realUrl));            }        }

        /// <summary>        /// 有返回值的方法。        /// </summary>        /// <param name="URL"></param>        /// <param name="MethodName"></param>        /// <param name="Pars"></param>        /// <param name="XmlNs"></param>        /// <returns></returns>        private static void QuerySoapWebService(String URL, String MethodName, Hashtable Pars, string XmlNs)        {            _xmlNamespaces[URL] = XmlNs;//加入缓存，提高效率            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL);            request.Method = "POST";            request.ContentType = "text/xml; charset=utf-8";            request.Headers.Add("SOAPAction", "\"" + XmlNs + (XmlNs.EndsWith("/") ? "" : "/") + MethodName + "\"");            SetWebRequest(request);            byte[] data = EncodeParsToSoap(Pars, XmlNs, MethodName);

            WriteRequestData(request, data);            request.GetResponse();        }

        /// <summary>        /// 获取命名空间        /// </summary>        /// <param name="URL"></param>        /// <returns></returns>        private static string GetNamespace(String URL)        {            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL + "?WSDL");            SetWebRequest(request);            WebResponse response = request.GetResponse();            StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);            XmlDocument doc = new XmlDocument();            doc.LoadXml(sr.ReadToEnd());            sr.Close();            return doc.SelectSingleNode("//@targetNamespace").Value;        }

        /// <summary>        /// 转换成soap包        /// </summary>        /// <param name="Pars">参数</param>        /// <param name="XmlNs">命名空间</param>        /// <param name="MethodName">方法名</param>        /// <returns>返回值</returns>        private static byte[] EncodeParsToSoap(Hashtable Pars, String XmlNs, String MethodName)        {            XmlDocument doc = new XmlDocument();            doc.LoadXml("<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\"></soap:Envelope>");            AddDelaration(doc);            XmlElement soapBody = doc.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");            XmlElement soapMethod = doc.CreateElement(MethodName);            soapMethod.SetAttribute("xmlns", XmlNs);            if (Pars != null && Pars.Count > 0)            {                foreach (string k in Pars.Keys)                {                    XmlElement soapPar = doc.CreateElement(k);                    soapPar.InnerXml = ObjectToSoapXml(Pars[k]);                    soapMethod.AppendChild(soapPar);                }            }            soapBody.AppendChild(soapMethod);            doc.DocumentElement.AppendChild(soapBody);            return Encoding.UTF8.GetBytes(doc.OuterXml);        }

        /// <summary>        /// 转换object成xml        /// </summary>        /// <param name="o"></param>        /// <returns></returns>        private static string ObjectToSoapXml(object o)        {            XmlSerializer mySerializer = new XmlSerializer(o.GetType());            MemoryStream ms = new MemoryStream();            mySerializer.Serialize(ms, o);            XmlDocument doc = new XmlDocument();            doc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));            if (doc.DocumentElement != null)            {                return doc.DocumentElement.InnerXml;            }            else            {                return o.ToString();            }        }                /// <summary>        /// 设置请求参数        /// </summary>        /// <param name="request"></param>        private static void SetWebRequest(HttpWebRequest request)        {            request.Credentials = CredentialCache.DefaultCredentials;            request.Timeout = 10000;        }

        /// <summary>        /// 往网络流写数据        /// </summary>        /// <param name="request"></param>        /// <param name="data"></param>        private static void WriteRequestData(HttpWebRequest request, byte[] data)        {            request.ContentLength = data.Length;            Stream writer = request.GetRequestStream();            writer.Write(data, 0, data.Length);            writer.Close();        }

        /// <summary>        /// xml添加head        /// </summary>        /// <param name="doc"></param>        private static void AddDelaration(XmlDocument doc)        {            XmlDeclaration decl = doc.CreateXmlDeclaration("1.0", "utf-8", null);            doc.InsertBefore(decl, doc.DocumentElement);        }

    }}

转载于:https://www.cnblogs.com/tuyile006/archive/2010/12/15/1907325.html