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 { /// 
 /// 利用WebRequest/WebResponse进行WebService调用的类 /// 
 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 // //  //   //   //  // //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 /// 
 /// 需要WebService支持Post调用 /// 
 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()); } /// 
 /// 需要WebService支持Get调用 /// 
 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()); } /// 
 /// 通用WebService调用(Soap),参数Pars为String类型的参数名、参数值 /// 
 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("" + RetXml + ""); 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(""); 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(); } } /// 
 /// 设置凭证与超时时间 /// 
 ///  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", "001"); 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