动态调用WebService（支持SaopHeader）

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using System;using System.CodeDom;using System.CodeDom.Compiler;using System.Collections.Generic;using System.IO;using System.Net;using System.Reflection;using System.Web.Services.Description;using Microsoft.CSharp;namespace Utility{    /// <summary>    /// 动态调用WebService（支持SaopHeader）    /// </summary>    public class WebServiceHelper    {        /// <summary>           /// 获取WebService的类名           /// </summary>           /// <param name="wsUrl">WebService地址</param>           /// <returns>返回WebService的类名</returns>           private static string GetWsClassName(string wsUrl)        {            string[] parts = wsUrl.Split('/');            string[] pps = parts[parts.Length - 1].Split('.');            return pps[0];        }        /// <summary>           /// 调用WebService（不带SoapHeader）        /// </summary>           /// <param name="wsUrl">WebService地址</param>           /// <param name="methodName">方法名称</param>           /// <param name="args">参数列表</param>           /// <returns>返回调用结果</returns>           public static object InvokeWebService(string wsUrl, string methodName, object[] args)        {            return InvokeWebService(wsUrl, null, methodName, null, args);        }        /// <summary>           /// 调用WebService（带SoapHeader）        /// </summary>           /// <param name="wsUrl">WebService地址</param>           /// <param name="methodName">方法名称</param>           /// <param name="soapHeader">SOAP头</param>           /// <param name="args">参数列表</param>           /// <returns>返回调用结果</returns>        public static object InvokeWebService(string wsUrl, string methodName, SoapHeader soapHeader, object[] args)        {            return InvokeWebService(wsUrl, null, methodName, soapHeader, args);        }        /// <summary>           /// 调用WebService        /// </summary>           /// <param name="wsUrl">WebService地址</param>           /// <param name="className">类名</param>           /// <param name="methodName">方法名称</param>           /// <param name="soapHeader">SOAP头</param>        /// <param name="args">参数列表</param>           /// <returns>返回调用结果</returns>           public static object InvokeWebService(string wsUrl, string className, string methodName, SoapHeader soapHeader, object[] args)        {            string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";            if ((className == null) || (className == ""))            {                className = GetWsClassName(wsUrl);            }            try            {                //获取WSDL                   WebClient wc = new WebClient();                Stream stream = wc.OpenRead(wsUrl + "?wsdl");                ServiceDescription sd = ServiceDescription.Read(stream);                ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();                sdi.AddServiceDescription(sd, "", "");                CodeNamespace cn = new CodeNamespace(@namespace);                //生成客户端代理类代码                   CodeCompileUnit ccu = new CodeCompileUnit();                ccu.Namespaces.Add(cn);                sdi.Import(cn, ccu);                CSharpCodeProvider csc = new CSharpCodeProvider();                ICodeCompiler icc = csc.CreateCompiler();                //设定编译参数                   CompilerParameters cplist = new CompilerParameters();                cplist.GenerateExecutable = false;                cplist.GenerateInMemory = true;                cplist.ReferencedAssemblies.Add("System.dll");                cplist.ReferencedAssemblies.Add("System.XML.dll");                cplist.ReferencedAssemblies.Add("System.Web.Services.dll");                cplist.ReferencedAssemblies.Add("System.Data.dll");                //编译代理类                   CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);                if (true == cr.Errors.HasErrors)                {                    System.Text.StringBuilder sb = new System.Text.StringBuilder();                    foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)                    {                        sb.Append(ce.ToString());                        sb.Append(System.Environment.NewLine);                    }                    throw new Exception(sb.ToString());                }                //生成代理实例，并调用方法                   System.Reflection.Assembly assembly = cr.CompiledAssembly;                Type t = assembly.GetType(@namespace + "." + className, true, true);                FieldInfo[] arry = t.GetFields();                FieldInfo client = null;                object clientkey = null;                if (soapHeader != null)                {                    //Soap头开始                       client = t.GetField(soapHeader.ClassName + "Value");                    //获取客户端验证对象                       Type typeClient = assembly.GetType(@namespace + "." + soapHeader.ClassName);                    //为验证对象赋值                       clientkey = Activator.CreateInstance(typeClient);                    foreach (KeyValuePair<string, object> property in soapHeader.Properties)                    {                        typeClient.GetField(property.Key).SetValue(clientkey, property.Value);                    }                    //Soap头结束                   }                //实例类型对象                   object obj = Activator.CreateInstance(t);                if (soapHeader != null)                {                    //设置Soap头                    client.SetValue(obj, clientkey);                }                System.Reflection.MethodInfo mi = t.GetMethod(methodName);                return mi.Invoke(obj, args);            }            catch (Exception ex)            {                throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));            }        }        /// <summary>        /// SOAP头        /// </summary>        public class SoapHeader        {            /// <summary>            /// 构造一个SOAP头            /// </summary>            public SoapHeader()            {                this.Properties = new Dictionary<string, object>();            }            /// <summary>            /// 构造一个SOAP头            /// </summary>            /// <param name="className">SOAP头的类名</param>            public SoapHeader(string className)            {                this.ClassName = className;                this.Properties = new Dictionary<string, object>();            }            /// <summary>            /// 构造一个SOAP头            /// </summary>            /// <param name="className">SOAP头的类名</param>            /// <param name="properties">SOAP头的类属性名及属性值</param>            public SoapHeader(string className, Dictionary<string, object> properties)            {                this.ClassName = className;                this.Properties = properties;            }            /// <summary>            /// SOAP头的类名            /// </summary>            public string ClassName { get; set; }            /// <summary>            /// SOAP头的类属性名及属性值            /// </summary>            public Dictionary<string, object> Properties { get; set; }            /// <summary>            /// 为SOAP头增加一个属性及值            /// </summary>            /// <param name="name">SOAP头的类属性名</param>            /// <param name="value">SOAP头的类属性值</param>            public void AddProperty(string name, object value)            {                if (this.Properties == null)                {                    this.Properties = new Dictionary<string, object>();                }                Properties.Add(name, value);            }        }    }}

调用方法：

假设SoapHeader为：

    public class Variable : SoapHeader    {        public string UserName { get; set; }        public string Password { get; set; }    }

那么，调用的方法如下：

            WebServiceHelper.SoapHeader header = new WebServiceHelper.SoapHeader("Variable");            header.AddProperty("UserName", "aa");            header.AddProperty("Password", "bb");            object r = WebServiceHelper.InvokeWebService(                "http://localhost:2996/WebService1.asmx",                "HelloWorld",                header,                null);

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