C# 动态调用WebService的示例

 using Microsoft.CSharp; 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.Web.Services.Description; using System.Xml.Serialization; namespace SunCreate.HaiKang8600WebService.Utils { /// 
 /// 动态调用WebService /// 
 public static class WebServiceHelper { /// 
 /// 动态调用WebService /// 
 /// WebService地址 /// 命名空间 /// 类名 /// 方法名(模块名) /// 参数列表 public static object InvokeWebService(string url, string strNamespace, string className, string methodName, object[] args) { try { WebClient webClient = new WebClient(); Stream stream = webClient.OpenRead(url); //获取服务描述语言(WSDL) ServiceDescription serviceDescription = ServiceDescription.Read(stream); //通过直接从 Stream实例加载 XML 来初始化ServiceDescription类的实例。 ServiceDescriptionImporter serviceDescriptionImporter = new ServiceDescriptionImporter(); serviceDescriptionImporter.AddServiceDescription(serviceDescription, null, null); //生成客户端代理类代码 CodeNamespace codeNamespace = new CodeNamespace(strNamespace); //CodeNamespace表示命名空间声明。 CodeCompileUnit codeCompileUnit = new CodeCompileUnit(); codeCompileUnit.Namespaces.Add(codeNamespace); serviceDescriptionImporter.Import(codeNamespace, codeCompileUnit); CSharpCodeProvider csharpCodeProvider = new CSharpCodeProvider(); ICodeCompiler iCodeCompiler = csharpCodeProvider.CreateCompiler();//取得C#程式码编译器的执行个体 //设定编译器的参数 CompilerParameters compilerParameters = new CompilerParameters();//创建编译器的参数实例 compilerParameters.GenerateExecutable = false; compilerParameters.GenerateInMemory = true; compilerParameters.ReferencedAssemblies.Add("System.dll"); compilerParameters.ReferencedAssemblies.Add("System.XML.dll"); compilerParameters.ReferencedAssemblies.Add("System.Web.Services.dll"); compilerParameters.ReferencedAssemblies.Add("System.Data.dll"); //编译代理类 CompilerResults compilerResults = iCodeCompiler.CompileAssemblyFromDom(compilerParameters, codeCompileUnit); if (true == compilerResults.Errors.HasErrors) { StringBuilder sb = new StringBuilder(); foreach (CompilerError ce in compilerResults.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 = compilerResults.CompiledAssembly; Type type = assembly.GetType(strNamespace + "." + className, true, true); object obj = Activator.CreateInstance(type); System.Reflection.MethodInfo methodInfo = type.GetMethod(methodName); //MethodInfo 的实例可以通过调用GetMethods或者Type对象或派生自Type的对象的GetMethod方法来获取，还可以通过调用表示泛型方法定义的 MethodInfo 的MakeGenericMethod方法来获取。 return methodInfo.Invoke(obj, args); } catch (Exception ex) { LogUtil.LogError(ex, "动态调用WebService 错误"); return null; } } } }

 string url = "http://172.16.36.26:8080/attachment/services/AttachmentService?wsdl"; object[] args = new object[2]; args[0] = "1"; args[1] = "1"; object str = WebServiceHelper.InvokeWebService(url, "service.webservice", "AttachmentService", "checkGrade", args); string sstr = str.ToString();