WebService调用

WebService调用方法总结

一、客户端代理类

　　1、方式一。

using System;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Web.Services.Description;
using System.Xml;
using System.Xml.Serialization;namespace NetWebServiceInvoke
{/// <summary>/// 通过生成代理类调用WebService/// </summary>public class InvokeByProxy1{private object agent;private Type agentType;private const string CODE_NAMESPACE = "NetWebServiceInvoke.WebServiceAgent.Dynamic";/// <summary>/// 构造函数/// </summary>/// <param name="url">统一资源定位符</param>public InvokeByProxy1(string url){XmlTextReader reader = new XmlTextReader(url + "?wsdl");//创建和格式化 WSDL 文档  ServiceDescription sd = ServiceDescription.Read(reader);//创建客户端代理代理类  ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();sdi.AddServiceDescription(sd, null, null);//使用 CodeDom 编译客户端代理类  CodeNamespace cn = new CodeNamespace(CODE_NAMESPACE);CodeCompileUnit ccu = new CodeCompileUnit();ccu.Namespaces.Add(cn);sdi.Import(cn, ccu);Microsoft.CSharp.CSharpCodeProvider icc = new Microsoft.CSharp.CSharpCodeProvider();CompilerParameters cp = new CompilerParameters();CompilerResults cr = icc.CompileAssemblyFromDom(cp, ccu);agentType = cr.CompiledAssembly.GetTypes()[0];agent = Activator.CreateInstance(agentType);}///<summary>  ///调用指定的方法  ///</summary>  ///<param name="methodName">方法名，大小写敏感</param>  ///<param name="args">参数，按照参数顺序赋值</param>  ///<returns>Web服务的返回值</returns>  public object Invoke(string methodName, params object[] args){MethodInfo mi = agentType.GetMethod(methodName);return this.Invoke(mi, args);}///<summary> ///调用指定方法  ///</summary> ///<param name="method">方法信息</param> ///<param name="args">参数，按照参数顺序赋值</param> ///<returns>Web服务的返回值</returns>public object Invoke(MethodInfo method, params object[] args){return method.Invoke(agent, args);}/// <summary>/// 获得代理所有方法/// </summary>public MethodInfo[] Methods{get{return agentType.GetMethods();}}}
}

View Code

　　2、方式二。

  1 using Microsoft.CSharp;
  2 using System;
  3 using System.CodeDom;
  4 using System.CodeDom.Compiler;
  5 using System.Collections.Generic;
  6 using System.IO;
  7 using System.Linq;
  8 using System.Net;
  9 using System.Reflection;
 10 using System.Text;
 11 using System.Threading.Tasks;
 12 using System.Web.Services.Description;
 13 using System.Xml;
 14 using System.Xml.Serialization;
 15
 16 namespace NetWebServiceInvoke
 17 {
 18     /// <summary>
 19     /// 通过生成代理类调用WebService
 20     /// </summary>
 21     public class InvokeByProxy2
 22     {
 23         /// <summary>
 24         /// 动态调用web服务
 25         /// </summary>
 26         /// <param name="url">统一资源定位符</param>
 27         /// <param name="methodname">方法名</param>
 28         /// <param name="args">参数</param>
 29         /// <returns></returns>
 30         public static object InvokeWebService(string url, string methodname, object[] args)
 31         {
 32             return InvokeByProxy2.InvokeWebService(url, null, methodname, args);
 33         }
 34
 35         /// <summary>
 36         /// 动态调用web服务
 37         /// </summary>
 38         /// <param name="url">统一资源定位雷符</param>
 39         /// <param name="classname">类名</param>
 40         /// <param name="methodname">方法名</param>
 41         /// <param name="args">参数</param>
 42         /// <returns></returns>
 43         public static object InvokeWebService(string url, string classname, string methodname, object[] args)
 44         {
 45             string @namespace = "NetWebServiceInvoke.WebService.DynamicWebCalling";
 46             if ((classname == null) || (classname == ""))
 47             {
 48                 classname = InvokeByProxy2.GetWsClassName(url);
 49             }
 50
 51             try
 52             {
 53                 //获取WSDL
 54                 WebClient wc = new WebClient();
 55                 Stream stream = wc.OpenRead(url + "?WSDL");
 56                 ServiceDescription sd = ServiceDescription.Read(stream);
 57                 ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
 58                 sdi.AddServiceDescription(sd, "", "");
 59                 CodeNamespace cn = new CodeNamespace(@namespace);
 60
 61                 //生成客户端代理类代码
 62                 CodeCompileUnit ccu = new CodeCompileUnit();
 63                 ccu.Namespaces.Add(cn);
 64                 sdi.Import(cn, ccu);
 65                 CSharpCodeProvider csc = new CSharpCodeProvider();
 66
 67                 //设定编译参数
 68                 CompilerParameters cplist = new CompilerParameters();
 69                 cplist.GenerateExecutable = false;
 70                 cplist.GenerateInMemory = true;
 71                 cplist.ReferencedAssemblies.Add("System.dll");
 72                 cplist.ReferencedAssemblies.Add("System.XML.dll");
 73                 cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
 74                 cplist.ReferencedAssemblies.Add("System.Data.dll");
 75
 76                 //编译代理类
 77                 CompilerResults cr = csc.CompileAssemblyFromDom(cplist, ccu);
 78                 if (true == cr.Errors.HasErrors)
 79                 {
 80                     System.Text.StringBuilder sb = new System.Text.StringBuilder();
 81                     foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)
 82                     {
 83                         sb.Append(ce.ToString());
 84                         sb.Append(System.Environment.NewLine);
 85                     }
 86                     throw new Exception(sb.ToString());
 87                 }
 88
 89                 //生成代理实例，并调用方法
 90                 System.Reflection.Assembly assembly = cr.CompiledAssembly;
 91                 Type t = assembly.GetType(@namespace + "." + classname, true, true);
 92                 object obj = Activator.CreateInstance(t);
 93                 System.Reflection.MethodInfo mi = t.GetMethod(methodname);
 94
 95                 return mi.Invoke(obj, args);
 96             }
 97             catch (Exception ex)
 98             {
 99                 throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
100             }
101         }
102
103         /// <summary>
104         /// 获取类名
105         /// </summary>
106         /// <param name="wsUrl">统一资源定位雷符</param>
107         /// <returns></returns>
108         private static string GetWsClassName(string wsUrl)
109         {
110             string[] parts = wsUrl.Split('/');
111             string[] pps = parts[parts.Length - 1].Split('.');
112
113             return pps[0];
114         }
115
116     }
117 }

View Code

　　3、方式三。

　　项目中直接添加服务引用。

二、HttpWebRequest

　　Get、Post请求方式。SOAP协议。

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Serialization;namespace NetWebServiceInvoke
{/// <summary>/// 通过HttpWebRequest调用WebService/// </summary>public class InvokeByHttpWebRequest{#region 定义/// <summary>/// 缓存xmlNamespace，避免重复调用GetNamespace/// </summary>private static Hashtable _xmlNamespaces = new Hashtable();#endregion#region 调用方式/// <summary>/// Post方式/// </summary>/// <param name="URL">统一资源定位符</param>/// <param name="MethodName">方法名</param>/// <param name="Pars">参数</param>/// <returns>xml文档</returns>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>/// Get方式/// </summary>/// <param name="URL">统一资源定位符</param>/// <param name="MethodName">方法名</param>/// <param name="Pars">参数</param>/// <returns>xml文档</returns>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>/// Soap方式/// </summary>/// <param name="URL">统一资源定位符</param>/// <param name="MethodName">方法名</param>/// <param name="Pars">参数</param>/// <returns>xml文档</returns>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));}}/// <summary>/// Soap方式/// </summary>/// <param name="URL">统一资源定位符</param>/// <param name="MethodName">方法名</param>/// <param name="Pars">参数</param>/// <param name="XmlNs">xml命名空间</param>/// <returns>xml文档</returns>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;}#endregion#region 设置/// <summary>/// 获得命名空间/// </summary>/// <param name="URL">统一资源定位符</param>/// <returns></returns>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;}/// <summary>/// 设置凭证与超时时间/// </summary>/// <param name="request">请求</param>private static void SetWebRequest(HttpWebRequest request){request.Credentials = CredentialCache.DefaultCredentials;request.Timeout = 10000;}/// <summary>/// 写入请求数据/// </summary>/// <param name="request">请求</param>/// <param name="data">数据</param>private static void WriteRequestData(HttpWebRequest request, byte[] data){request.ContentLength = data.Length;Stream writer = request.GetRequestStream();writer.Write(data, 0, data.Length);writer.Close();}#endregion#region 参数/// <summary>/// 参数编码/// </summary>/// <param name="Pars">参数</param>/// <returns>字节数组</returns>private static byte[] EncodePars(Hashtable Pars){return Encoding.UTF8.GetBytes(ParsToString(Pars));}/// <summary>/// 参数编码/// </summary>/// <param name="Pars">参数</param>/// <returns></returns>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();}/// <summary>/// Soap参数编码/// </summary>/// <param name="Pars">参数</param>/// <param name="XmlNs">xml命名空间</param>/// <param name="MethodName">方法</param>/// <returns>字节数组</returns>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);}/// <summary>/// obj序列化xml/// </summary>/// <param name="obj"></param>/// <returns>结果</returns>private static string ObjectToSoapXml(object obj){XmlSerializer mySerializer = new XmlSerializer(obj.GetType());MemoryStream ms = new MemoryStream();mySerializer.Serialize(ms, obj);XmlDocument doc = new XmlDocument();doc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));if (doc.DocumentElement != null){return doc.DocumentElement.InnerXml;}else{return obj.ToString();}}#endregion#region 响应数据/// <summary>/// 响应数据读取/// </summary>/// <param name="response">响应</param>/// <returns>xml文档</returns>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;}/// <summary>/// xml文档添加声明/// </summary>/// <param name="doc">xml文档</param>private static void AddDelaration(XmlDocument doc){XmlDeclaration decl = doc.CreateXmlDeclaration("1.0", "utf-8", null);doc.InsertBefore(decl, doc.DocumentElement);}#endregion }
}

View Code

　　通过此方法返回的都是xml格式的数据，如返回json格式该如何。

　　Demo下载地址：http://pan.baidu.com/s/1eQntsUe

本文摘自：

　　http://blog.csdn.net/ysq5202121/article/details/6942813

　　http://www.cnblogs.com/eagle1986/archive/2012/09/03/2669699.html

转载于:https://www.cnblogs.com/zhang-lei/p/4975620.html

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