C#动态webservice调用接口

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 + ""); 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

示例二：

1.动态调用的方法:

/// <summary> /// 动态webservice调用 /// </summary> /// <returns>string</returns> public string wsTest() { string url = "http://localhost:8080/myWebserviceTest/services/myServices";//wsdl地址 string name = "wsTest";//javaWebService开放的接口 WebServiceProxy wsd = new WebServiceProxy(url, name); string[] str = { "测试c#调用java的webService" , "Hello WebService"}; string suc = (string)wsd.ExecuteQuery(name, str); return suc; }

2.动态调用具体类:

using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Linq; using System.Web; using System.Web.Services; using System.Web.Services.Protocols; using System.Xml.Linq; using System.IO; using System.Net; using System.CodeDom; using System.CodeDom.Compiler; using System.Web.Services.Description; using System.Xml.Serialization; using System.Web.Services.Discovery; using System.Xml.Schema; using System.Text; using System.Security.Cryptography; using System.Reflection; using System.Collections.Generic; using System.Xml; namespace TPSVService { /// <summary> /// WebServiceProxy 的摘要说明 /// </summary> [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [ToolboxItem(false)] // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。 // [System.Web.Script.Services.ScriptService] public class WebServiceProxy : System.Web.Services.WebService { #region 私有变量和属性定义 /// <summary> /// web服务地址 /// </summary> private string _wsdlUrl = string.Empty; /// <summary> /// web服务名称 /// </summary> private string _wsdlName = string.Empty; /// <summary> /// 代理类命名空间 /// </summary> private string _wsdlNamespace = "FrameWork.WebService.DynamicWebServiceCalling.{0}"; /// <summary> /// 代理类类型名称 /// </summary> private Type _typeName = null; /// <summary> /// 程序集名称 /// </summary> private string _assName = string.Empty; /// <summary> /// 代理类所在程序集路径 /// </summary> private string _assPath = string.Empty; /// <summary> /// 代理类的实例 /// </summary> private object _instance = null; /// <summary> /// 代理类的实例 /// </summary> private object Instance { get { if (_instance == null) { _instance = Activator.CreateInstance(_typeName); return _instance; } else return _instance; } } #endregion #region 构造函数 public WebServiceProxy(string wsdlUrl) { this._wsdlUrl = wsdlUrl; string wsdlName = WebServiceProxy.getWsclassName(wsdlUrl); this._wsdlName = wsdlName; this._assName = string.Format(_wsdlNamespace, wsdlName); this._assPath = Path.GetTempPath() + this._assName + getMd5Sum(this._wsdlUrl) + ".dll"; this.CreateServiceAssembly(); } public WebServiceProxy(string wsdlUrl, string wsdlName) { this._wsdlUrl = wsdlUrl; this._wsdlName = wsdlName; this._assName = string.Format(_wsdlNamespace, wsdlName); this._assPath = Path.GetTempPath() + this._assName + getMd5Sum(this._wsdlUrl) + ".dll"; this.CreateServiceAssembly(); } #endregion #region 得到WSDL信息，生成本地代理类并编译为DLL，构造函数调用，类生成时加载 /// <summary> /// 得到WSDL信息，生成本地代理类并编译为DLL /// </summary> private void CreateServiceAssembly() { if (this.checkCache()) { this.initTypeName(); return; } if (string.IsNullOrEmpty(this._wsdlUrl)) { return; } try { //使用WebClient下载WSDL信息 WebClient web = new WebClient(); Stream stream = web.OpenRead(this._wsdlUrl); ServiceDescription description = ServiceDescription.Read(stream);//创建和格式化WSDL文档 ServiceDescriptionImporter importer = new ServiceDescriptionImporter();//创建客户端代理代理类 importer.ProtocolName = "Soap"; importer.Style = ServiceDescriptionImportStyle.Client; //生成客户端代理 importer.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties | CodeGenerationOptions.GenerateNewAsync; importer.AddServiceDescription(description, null, null);//添加WSDL文档 //使用CodeDom编译客户端代理类 CodeNamespace nmspace = new CodeNamespace(_assName); //为代理类添加命名空间 CodeCompileUnit unit = new CodeCompileUnit(); unit.Namespaces.Add(nmspace); this.checkForImports(this._wsdlUrl, importer); ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit); CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp"); CompilerParameters parameter = new CompilerParameters(); parameter.ReferencedAssemblies.Add("System.dll"); parameter.ReferencedAssemblies.Add("System.XML.dll"); parameter.ReferencedAssemblies.Add("System.Web.Services.dll"); parameter.ReferencedAssemblies.Add("System.Data.dll"); parameter.GenerateExecutable = false; parameter.GenerateInMemory = false; parameter.IncludeDebugInformation = false; CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit); provider.Dispose(); if (result.Errors.HasErrors) { string errors = string.Format(@"编译错误:{0}错误！", result.Errors.Count); foreach (CompilerError error in result.Errors) { errors += error.ErrorText; } throw new Exception(errors); } this.copyTempAssembly(result.PathToAssembly); this.initTypeName(); } catch (Exception e) { throw new Exception(e.Message); } } #endregion #region 执行Web服务方法 /// <summary> /// 执行代理类指定方法，有返回值 /// </summary> /// <param name="methodName">方法名称</param> /// <param name="param">参数</param> /// <returns>object</returns> public object ExecuteQuery(string methodName, object[] param) { object rtnObj = null; string[] args = new string[2]; List<string> list = new List<string>(); List<string> list1 = new List<string>(); List<string> list2 = new List<string>(); object[] obj = new object[3]; try { if (this._typeName == null) { //记录Web服务访问类名错误日志代码位置 throw new TypeLoadException("Web服务访问类名【" + this._wsdlName + "】不正确，请检查！"); } //调用方法 MethodInfo mi = this._typeName.GetMethod(methodName); if (mi == null) { //记录Web服务方法名错误日志代码位置 throw new TypeLoadException("Web服务访问方法名【" + methodName + "】不正确，请检查！"); } try { if (param == null) rtnObj = mi.Invoke(Instance, null); else { list.Add("Hello "); list.Add("WebService "); list.Add(" ! "); list1.Add("I "); list1.Add("am "); list1.Add("test "); list2.Add("do "); list2.Add("it "); list2.Add("now "); obj[0] = list; obj[1] = list1; obj[2] = list2; rtnObj = mi.Invoke(Instance, new object[] { obj }); //rtnObj = mi.Invoke(Instance, new object[] { param }); } } catch (TypeLoadException tle) { //记录Web服务方法参数个数错误日志代码位置 throw new TypeLoadException("Web服务访问方法【" + methodName + "】参数个数不正确，请检查！", new TypeLoadException(tle.StackTrace)); } } catch (Exception ex) { throw new Exception(ex.Message, new Exception(ex.StackTrace)); } return rtnObj; } /// <summary> /// 执行代理类指定方法，无返回值 /// </summary> /// <param name="methodName">方法名称</param> /// <param name="param">参数</param> public void ExecuteNoQuery(string methodName, object[] param) { try { if (this._typeName == null) { //记录Web服务访问类名错误日志代码位置 throw new TypeLoadException("Web服务访问类名【" + this._wsdlName + "】不正确，请检查！"); } //调用方法 MethodInfo mi = this._typeName.GetMethod(methodName); if (mi == null) { //记录Web服务方法名错误日志代码位置 throw new TypeLoadException("Web服务访问方法名【" + methodName + "】不正确，请检查！"); } try { if (param == null) mi.Invoke(Instance, null); else mi.Invoke(Instance, param); } catch (TypeLoadException tle) { //记录Web服务方法参数个数错误日志代码位置 throw new TypeLoadException("Web服务访问方法【" + methodName + "】参数个数不正确，请检查！", new TypeLoadException(tle.StackTrace)); } } catch (Exception ex) { throw new Exception(ex.Message, new Exception(ex.StackTrace)); } } #endregion #region 私有方法 /// <summary> /// 得到代理类类型名称 /// </summary> private void initTypeName() { Assembly serviceAsm = Assembly.LoadFrom(this._assPath); Type[] types = serviceAsm.GetTypes(); string objTypeName = ""; foreach (Type t in types) { if (t.BaseType == typeof(SoapHttpClientProtocol)) { objTypeName = t.Name; break; } } _typeName = serviceAsm.GetType(this._assName + "." + objTypeName); } /// <summary> /// 根据web service文档架构向代理类添加ServiceDescription和XmlSchema /// </summary> /// <param name="baseWSDLUrl">web服务地址</param> /// <param name="importer">代理类</param> private void checkForImports(string baseWsdlUrl, ServiceDescriptionImporter importer) { DiscoveryClientProtocol dcp = new DiscoveryClientProtocol(); dcp.DiscoverAny(baseWsdlUrl); dcp.ResolveAll(); foreach (object osd in dcp.Documents.Values) { if (osd is ServiceDescription) importer.AddServiceDescription((ServiceDescription)osd, null, null); ; if (osd is XmlSchema) importer.Schemas.Add((XmlSchema)osd); } } /// <summary> /// 复制程序集到指定路径 /// </summary> /// <param name="pathToAssembly">程序集路径</param> private void copyTempAssembly(string pathToAssembly) { File.Copy(pathToAssembly, this._assPath); } private string getMd5Sum(string str) { Encoder enc = System.Text.Encoding.Unicode.GetEncoder(); byte[] unicodeText = new byte[str.Length * 2]; enc.GetBytes(str.ToCharArray(), 0, str.Length, unicodeText, 0, true); MD5 md5 = new MD5CryptoServiceProvider(); byte[] result = md5.ComputeHash(unicodeText); StringBuilder sb = new StringBuilder(); for (int i = 0; i < result.Length; i++) { sb.Append(result[i].ToString("X2")); } return sb.ToString(); } /// <summary> /// 是否已经存在该程序集 /// </summary> /// <returns>false:不存在该程序集,true:已经存在该程序集</returns> private bool checkCache() { if (File.Exists(this._assPath)) { return true; } return false; } //私有方法，默认取url入口的文件名为类名 private static string getWsclassName(string wsdlUrl) { string[] parts = wsdlUrl.Split('/'); string[] pps = parts[parts.Length - 1].Split('.'); return pps[0]; } #endregion } }

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