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)
{
_xmlNamespacesrequest.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\" target=_blank> = 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=\"[url=http://www.w3.org/2001/XMLSchema-instance/]http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"[url=http://www.w3.org/2001/XMLSchema/]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);
}

}
}