C# 动态调用WebService

C# 动态调用WebService

动态调用webservice,就可以不用添加web引用了,上线的话也只是需要改一下wsdl地址就可以了 

/// <summary>  
        ///  动态webservice调用  
        /// </summary>  
        /// <returns>string</returns>    
        public string wsTest()  
        {  
            string url = "http://localhost:8080/myWebserviceTest/services/myServices?wsdl";//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;  
        }  

　　

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  
    }  
}