using System;using System.Web;using System.Xml;using System.Collections;using System.Net;using System.Text;using System.IO;using System.Xml.Serialization;
//By huangz 2008-3-19
/// <summary>/// 利用WebRequest/WebResponse进行WebService调用的类
/// </summary>public class WebSvcCaller{ //<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> /// 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 soapMethod = doc.createElement_x_x(MethodName); soapMethod.SetAttribute("xmlns", XmlNs); foreach (string k in Pars.Keys) { XmlElement soapPar = doc.createElement_x_x(k); soapPar.InnerXml = ObjectToSoapXml(Pars[k]); soapMethod.appendChild_xss(soapPar); } soapBody.appendChild_xss(soapMethod); doc.DocumentElement.appendChild_xss(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(); } } 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); }}
调用示例：
Hashtable ht = new Hashtable();ht.Add("str", "test");ht.Add("b", "true");XmlDocument xx = WebSvcCaller.QuerySoapWebService("http://localhost:81/service.asmx", "HelloWorld", ht);MessageBox.Show(xx.OuterXml);
转载于:https://www.cnblogs.com/tuyile006/archive/2010/12/05/1897137.html
