动态调用Webservice

动态调用Webservice (转) /// /// 根据指定的信息，调用远程WebService方法 /// /// WebService的http形式的地址 /// 欲调用的WebService的命名空间 /// 欲调用的WebService的类名（不包括命名空间前缀） /// 欲调用的WebService的方法名 /// 参数列表 /// WebService的执行结果 /// /// 如果调用失败，将会抛出Exception。请调用的时候，适当截获异常。 /// 异常信息可能会发生在两个地方： /// 1、动态构造WebService的时候，CompileAssembly失败。 /// 2、WebService本身执行失败。 /// /// /// /// object obj = InvokeWebservice("http://localhost/GSP_WorkflowWebservice/common.asmx","Genersoft.Platform.Service.Workflow","Common","GetToolType",new object[]{"1"}); ////// private object InvokeWebservice(string url,string @namespace,string classname,string methodname,object[] args) { try { System.Net.WebClient wc = new System.Net.WebClient(); System.IO.Stream stream = wc.OpenRead(url+"?WSDL"); System.Web.Services.Description.ServiceDescription sd = System.Web.Services.Description.ServiceDescription.Read(stream); System.Web.Services.Description.ServiceDescriptionImporter sdi = new System.Web.Services.Description.ServiceDescriptionImporter(); sdi.AddServiceDescription(sd,"",""); System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(@namespace); System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit(); ccu.Namespaces.Add(cn); sdi.Import(cn,ccu); Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider(); System.CodeDom.Compiler.ICodeCompiler icc = csc.CreateCompiler(); System.CodeDom.Compiler.CompilerParameters cplist = new System.CodeDom.Compiler.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"); System.CodeDom.Compiler.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()); } 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); } catch(Exception ex) { throw new Exception(ex.InnerException.Message,new Exception(ex.InnerException.StackTrace)); } }