c#动态调用WEBSERVICE接口

时间 2019-12-09

标签 c# 动态调用 webservice 接口栏目 C# 繁體版

原文原文链接

C#动态webservice调用接口java

  1 using System;  2 using System.Collections;  3 using System.IO;  4 using System.Net;  5 using System.Text;  6 using System.Xml;  7 using System.Xml.Serialization;  8 namespace Hishop.Plugins  9 {  10 /// <summary>  11 /// 利用WebRequest/WebResponse进行WebService调用的类  12 /// </summary>  13 public class WebServiceCaller  14  {  15 #region Tip:使用说明  16 //webServices 应该支持Get和Post调用，在web.config应该增长如下代码  17 //<webServices>  18 // <protocols>  19 // <add name="HttpGet"/>  20 // <add name="HttpPost"/>  21 // </protocols>  22 //</webServices>  23  24 //调用示例：  25 //Hashtable ht = new Hashtable(); //Hashtable 为webservice所须要的参数集  26 //ht.Add("str", "test");  27 //ht.Add("b", "true");  28 //XmlDocument xx = WebSvcCaller.QuerySoapWebService("http://localhost:81/service.asmx", "HelloWorld", ht);  29 //MessageBox.Show(xx.OuterXml);  30 #endregion  31  32 /// <summary>  33 /// 须要WebService支持Post调用  34 /// </summary>  35 public static XmlDocument QueryPostWebService(String URL, String MethodName, Hashtable Pars)  36  {  37 HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName);  38 request.Method = "POST";  39 request.ContentType = "application/x-www-form-urlencoded";  40  SetWebRequest(request);  41 byte[] data = EncodePars(Pars);  42  WriteRequestData(request, data);  43 return ReadXmlResponse(request.GetResponse());  44  }  45  46 /// <summary>  47 /// 须要WebService支持Get调用  48 /// </summary>  49 public static XmlDocument QueryGetWebService(String URL, String MethodName, Hashtable Pars)  50  {  51 HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName + "?" + ParsToString(Pars));  52 request.Method = "GET";  53 request.ContentType = "application/x-www-form-urlencoded";  54  SetWebRequest(request);  55 return ReadXmlResponse(request.GetResponse());  56  }  57  58 /// <summary>  59 /// 通用WebService调用(Soap),参数Pars为String类型的参数名、参数值  60 /// </summary>  61 public static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars)  62  {  63 if (_xmlNamespaces.ContainsKey(URL))  64  {  65 return QuerySoapWebService(URL, MethodName, Pars, _xmlNamespaces[URL].ToString());  66  }  67 else  68  {  69 return QuerySoapWebService(URL, MethodName, Pars, GetNamespace(URL));  70  }  71  }  72  73 private static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars, string XmlNs)  74  {  75 _xmlNamespaces[URL] = XmlNs;//加入缓存，提升效率  76 HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL);  77 request.Method = "POST";  78 request.ContentType = "text/xml; charset=utf-8";  79 request.Headers.Add("SOAPAction", "\"" + XmlNs + (XmlNs.EndsWith("/") ? "" : "/") + MethodName + "\"");  80  SetWebRequest(request);  81 byte[] data = EncodeParsToSoap(Pars, XmlNs, MethodName);  82  WriteRequestData(request, data);  83 XmlDocument doc = new XmlDocument(), doc2 = new XmlDocument();  84 doc = ReadXmlResponse(request.GetResponse());  85  86 XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable);  87 mgr.AddNamespace("soap", "http://schemas.xmlsoap.org/soap/envelope/");  88 String RetXml = doc.SelectSingleNode("//soap:Body/*/*", mgr).InnerXml;  89 doc2.LoadXml("<root>" + RetXml + "</root>");  90  AddDelaration(doc2);  91 return doc2;  92  }  93 private static string GetNamespace(String URL)  94  {  95 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL + "?WSDL");  96  SetWebRequest(request);  97 WebResponse response = request.GetResponse();  98 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);  99 XmlDocument doc = new XmlDocument(); 100  doc.LoadXml(sr.ReadToEnd()); 101  sr.Close(); 102 return doc.SelectSingleNode("//@targetNamespace").Value; 103  } 104 105 private static byte[] EncodeParsToSoap(Hashtable Pars, String XmlNs, String MethodName) 106  { 107 XmlDocument doc = new XmlDocument(); 108 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>"); 109  AddDelaration(doc); 110 //XmlElement soapBody = doc.createElement_x_x("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/"); 111 XmlElement soapBody = doc.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/"); 112 //XmlElement soapMethod = doc.createElement_x_x(MethodName); 113 XmlElement soapMethod = doc.CreateElement(MethodName); 114 soapMethod.SetAttribute("xmlns", XmlNs); 115 foreach (string k in Pars.Keys) 116  { 117 //XmlElement soapPar = doc.createElement_x_x(k); 118 XmlElement soapPar = doc.CreateElement(k); 119 soapPar.InnerXml = ObjectToSoapXml(Pars[k]); 120  soapMethod.AppendChild(soapPar); 121  } 122  soapBody.AppendChild(soapMethod); 123  doc.DocumentElement.AppendChild(soapBody); 124 return Encoding.UTF8.GetBytes(doc.OuterXml); 125  } 126 private static string ObjectToSoapXml(object o) 127  { 128 XmlSerializer mySerializer = new XmlSerializer(o.GetType()); 129 MemoryStream ms = new MemoryStream(); 130  mySerializer.Serialize(ms, o); 131 XmlDocument doc = new XmlDocument(); 132  doc.LoadXml(Encoding.UTF8.GetString(ms.ToArray())); 133 if (doc.DocumentElement != null) 134  { 135 return doc.DocumentElement.InnerXml; 136  } 137 else 138  { 139 return o.ToString(); 140  } 141  } 142 143 /// <summary> 144 /// 设置凭证与超时时间 145 /// </summary> 146 /// <param name="request"></param> 147 private static void SetWebRequest(HttpWebRequest request) 148  { 149 request.Credentials = CredentialCache.DefaultCredentials; 150 request.Timeout = 10000; 151  } 152 153 private static void WriteRequestData(HttpWebRequest request, byte[] data) 154  { 155 request.ContentLength = data.Length; 156 Stream writer = request.GetRequestStream(); 157 writer.Write(data, 0, data.Length); 158  writer.Close(); 159  } 160 161 private static byte[] EncodePars(Hashtable Pars) 162  { 163 return Encoding.UTF8.GetBytes(ParsToString(Pars)); 164  } 165 166 private static String ParsToString(Hashtable Pars) 167  { 168 StringBuilder sb = new StringBuilder(); 169 foreach (string k in Pars.Keys) 170  { 171 if (sb.Length > 0) 172  { 173 sb.Append("&"); 174  } 175 //sb.Append(HttpUtility.UrlEncode(k) + "=" + HttpUtility.UrlEncode(Pars[k].ToString())); 176  } 177 return sb.ToString(); 178  } 179 180 private static XmlDocument ReadXmlResponse(WebResponse response) 181  { 182 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8); 183 String retXml = sr.ReadToEnd(); 184  sr.Close(); 185 XmlDocument doc = new XmlDocument(); 186  doc.LoadXml(retXml); 187 return doc; 188  } 189 190 private static void AddDelaration(XmlDocument doc) 191  { 192 XmlDeclaration decl = doc.CreateXmlDeclaration("1.0", "utf-8", null); 193  doc.InsertBefore(decl, doc.DocumentElement); 194  } 195 196 private static Hashtable _xmlNamespaces = new Hashtable();//缓存xmlNamespace，避免重复调用GetNamespace 197  } 198 }

 1 //调用并读取解析返回结果  2  3 DataSet ds = new DataSet();  4  XmlNode xmlNode1;  5 XmlDataDocument xd = new XmlDataDocument();  6  StringBuilder sb;  7 Hashtable ht = new Hashtable();  8 ht.Add("xmlIn", "<Request><MemCode>001</MemCode></Request>");  9 xmlNode1 = Hishop.Plugins.WebServiceCaller.QuerySoapWebService("http://xxx.xxxx.com/Service.asmx", "SinPointQuery", ht); 10 if (xmlNode1 == null) 11  { 12 return; 13  } 14 string xmlstr= HttpUtility.HtmlDecode(xmlNode1.OuterXml); 15 sb = new StringBuilder(xmlstr); 16 if (sb.ToString().Equals("")) 17  { 18 return; 19  } 20  xd.LoadXml(sb.ToString()); 21 ds.ReadXml(new XmlNodeReader(xd)); 22 //ds能够返回出结果集

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示例二：c#

1.动态调用的方法:缓存

 1 /// <summary>  2 /// 动态webservice调用  3 /// </summary>  4 /// <returns>string</returns>  5 public string wsTest()  6  {  7 string url = "http://localhost:8080/myWebserviceTest/services/myServices?wsdl";//wsdl地址  8 string name = "wsTest";//javaWebService开放的接口  9 WebServiceProxy wsd = new WebServiceProxy(url, name); 10 11 string[] str = { "测试c#调用java的webService" , "Hello WebService"}; 12 13 string suc = (string)wsd.ExecuteQuery(name, str); 14 15 return suc; 16 }

2.动态调用具体类:架构

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)] // 若要容许使用 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 获得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> /// 获得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);//建立和格式化WSDL文档 ServiceDescriptionImporter importer = new ServiceDescriptionImporter();//建立客户端代理代理类 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> /// 获得代理类类型名称 /// </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  } }