动态调用web服务 --WSHelper.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Net;
using System.IO;
using System.Web.Services.Description;
using System.CodeDom;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.Reflection;

namespace WebApplication.Common
{
???public class WSHelper
???{
???????/// < summary> ??????????
???????/// 动态调用web服务 ????????
???????/// < /summary> ?????????
???????/// < param name="url">WSDL服务地址< /param>
???????/// < param name="methodname">方法名< /param> ??????????
???????/// < param name="args">参数< /param> ??????????
???????/// < returns>< /returns> ?????????
???????public static object InvokeWebService(string url, string methodname, object[] args)
???????{
???????????return WSHelper.InvokeWebService(url, null, methodname, args);
???????}
???????/// < summary> ?????????
???????/// 动态调用web服务
???????/// < /summary> ?????????
???????/// < param name="url">WSDL服务地址< /param>
???????/// < param name="classname">类名< /param> ?
???????/// < param name="methodname">方法名< /param> ?
???????/// < param name="args">参数< /param>
???????/// < returns>< /returns>
???????public static object InvokeWebService(string url, string classname, string methodname, object[] args)
???????{
???????????string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
???????????if ((classname == null) || (classname == ""))
???????????{
???????????????classname = WSHelper.GetWsClassName(url);
???????????}
???????????try
???????????{ ??????????????????//获取WSDL ??
???????????????WebClient wc = new WebClient();
???????????????Stream stream = wc.OpenRead(url + "?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 icc = new CSharpCodeProvider();
???????????????//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);
???????????????object obj = Activator.CreateInstance(t);
???????????????System.Reflection.MethodInfo mi = t.GetMethod(methodname);
???????????????return mi.Invoke(obj, args);
???????????????// PropertyInfo propertyInfo = type.GetProperty(propertyname); ????
???????????????//return propertyInfo.GetValue(obj, null);
???????????}
???????????catch (Exception ex)
???????????{
???????????????throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
???????????}
???????}
???????private static string GetWsClassName(string wsUrl)
???????{
???????????string[] parts = wsUrl.Split(‘/‘);
???????????string[] pps = parts[parts.Length - 1].Split(‘.‘);
???????????return pps[0];
???????}
???}
}