动态webservice调用接口并读取解析返回结果

using System;using System.Collections;using System.IO;using System.Net;using System.Text;using System.Xml;using System.Xml.Serialization;namespace Hishop.Plugins{  /// <summary>  /// 利用WebRequest/WebResponse进行WebService调用的类  /// </summary>  public class WebServiceCaller  {    #region Tip:使用说明    //webServices 应该支持Get和Post调用，在web.config应该增加以下代码    //<webServices>    // <protocols>    //  <add name="HttpGet"/>    //  <add name="HttpPost"/>    // </protocols>    //</webServices>     //调用示例：    //Hashtable ht = new Hashtable(); //Hashtable 为webservice所需要的参数集    //ht.Add("str", "test");    //ht.Add("b", "true");    //XmlDocument xx = WebSvcCaller.QuerySoapWebService("http://localhost:81/service.asmx", "HelloWorld", ht);    //MessageBox.Show(xx.OuterXml);    #endregion     /// <summary>    /// 需要WebService支持Post调用    /// </summary>    public static XmlDocument QueryPostWebService(String URL, String MethodName, Hashtable Pars)    {      HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName);      request.Method = "POST";      request.ContentType = "application/x-www-form-urlencoded";      SetWebRequest(request);      byte[] data = EncodePars(Pars);      WriteRequestData(request, data);      return ReadXmlResponse(request.GetResponse());    }     /// <summary>    /// 需要WebService支持Get调用    /// </summary>    public static XmlDocument QueryGetWebService(String URL, String MethodName, Hashtable Pars)    {      HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName + "?" + ParsToString(Pars));      request.Method = "GET";      request.ContentType = "application/x-www-form-urlencoded";      SetWebRequest(request);      return ReadXmlResponse(request.GetResponse());    }     /// <summary>    /// 通用WebService调用(Soap),参数Pars为String类型的参数名、参数值    /// </summary>    public static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars)    {      if (_xmlNamespaces.ContainsKey(URL))      {        return QuerySoapWebService(URL, MethodName, Pars, _xmlNamespaces[URL].ToString());      }      else      {        return QuerySoapWebService(URL, MethodName, Pars, GetNamespace(URL));      }    }     private static XmlDocument 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);      XmlDocument doc = new XmlDocument(), doc2 = new XmlDocument();      doc = ReadXmlResponse(request.GetResponse());       XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable);      mgr.AddNamespace("soap", "http://schemas.xmlsoap.org/soap/envelope/");      String RetXml = doc.SelectSingleNode("//soap:Body/*/*", mgr).InnerXml;      doc2.LoadXml("<root>" + RetXml + "</root>");      AddDelaration(doc2);      return doc2;    }    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;    }     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_x_x("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");      XmlElement soapBody = doc.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");      //XmlElement soapMethod = doc.createElement_x_x(MethodName);      XmlElement soapMethod = doc.CreateElement(MethodName);      soapMethod.SetAttribute("xmlns", XmlNs);      foreach (string k in Pars.Keys)      {        //XmlElement soapPar = doc.createElement_x_x(k);        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);    }    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>    /// 设置凭证与超时时间    /// </summary>    /// <param name="request"></param>    private static void SetWebRequest(HttpWebRequest request)    {      request.Credentials = CredentialCache.DefaultCredentials;      request.Timeout = 10000;    }     private static void WriteRequestData(HttpWebRequest request, byte[] data)    {      request.ContentLength = data.Length;      Stream writer = request.GetRequestStream();      writer.Write(data, 0, data.Length);      writer.Close();    }     private static byte[] EncodePars(Hashtable Pars)    {      return Encoding.UTF8.GetBytes(ParsToString(Pars));    }     private static String ParsToString(Hashtable Pars)    {      StringBuilder sb = new StringBuilder();      foreach (string k in Pars.Keys)      {        if (sb.Length > 0)        {          sb.Append("&");        }        //sb.Append(HttpUtility.UrlEncode(k) + "=" + HttpUtility.UrlEncode(Pars[k].ToString()));      }      return sb.ToString();    }     private static XmlDocument ReadXmlResponse(WebResponse response)    {      StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);      String retXml = sr.ReadToEnd();      sr.Close();      XmlDocument doc = new XmlDocument();      doc.LoadXml(retXml);      return doc;    }     private static void AddDelaration(XmlDocument doc)    {      XmlDeclaration decl = doc.CreateXmlDeclaration("1.0", "utf-8", null);      doc.InsertBefore(decl, doc.DocumentElement);    }     private static Hashtable _xmlNamespaces = new Hashtable();//缓存xmlNamespace，避免重复调用GetNamespace  }}

//调用并读取解析返回结果  DataSet ds = new DataSet();     XmlNode xmlNode1;    XmlDataDocument xd = new XmlDataDocument();    StringBuilder sb;     Hashtable ht = new Hashtable();    ht.Add("xmlIn", "<Request><MemCode>001</MemCode></Request>");    xmlNode1 = Hishop.Plugins.WebServiceCaller.QuerySoapWebService("http://xxx.xxxx.com/Service.asmx", "SinPointQuery", ht);    if (xmlNode1 == null)    {      return;    }    string xmlstr= HttpUtility.HtmlDecode(xmlNode1.OuterXml);    sb = new StringBuilder(xmlstr);    if (sb.ToString().Equals(""))    {      return;    }    xd.LoadXml(sb.ToString());    ds.ReadXml(new XmlNodeReader(xd));     //ds可以返回出结果集