比较简单,直接上源码:
using Microsoft.CSharp; using System; using System.CodeDom; using System.CodeDom.Compiler; using System.Collections.Generic; using System.Configuration; 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 MyDemo { public class WSHelper { //缓存集合,将数据放入缓存中,提高效率 private static SortedList<string, Type> _typeList = new SortedList<string, Type>(); private static readonly object objLock = new object(); #region InvokeWebService /// <summary> /// 获取缓存Key,方便写入/读取缓存 /// </summary> /// <param name="url"></param> /// <param name="className"></param> /// <returns></returns> private static string GetCacheKey(string url, string className) { return url.ToLower() + className; } /// <summary> /// 获取缓存类型 /// </summary> /// <param name="url"></param> /// <param name="className"></param> /// <returns></returns> private static Type GetTypeFromCache(string url, string className) { string key = GetCacheKey(url, className); KeyValuePair<string, Type> pair = _typeList.Where(c => c.Key == key).SingleOrDefault(); return pair.Value; } /// <summary> /// 创建对象 /// </summary> /// <param name="url"></param> /// <param name="className"></param> /// <returns></returns> private static Type GetTypeFromWebService(string url, string className) { string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling"; if ((className == null) || (className == "")) { className = GetWsClassName(url); } //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 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 = csc.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); return t; } /// <summary> /// 动态调用web服务 /// </summary> /// <param name="url">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 InvokeWebService(url, null, methodName, args); } /// <summary> /// Web Service动态调用 /// </summary> /// <param name="url">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) { try { Type t = GetTypeFromCache(url, className); if (t == null) { lock (objLock) { t = GetTypeFromWebService(url, className); if (t != null) { //添加到缓存中 string key = GetCacheKey(url, className); if (!_typeList.ContainsKey(key)) { _typeList.Add(key, t); } } } } object obj = Activator.CreateInstance(t); MethodInfo mi = t.GetMethod(methodName); return mi.Invoke(obj, args); } 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]; } #endregion } }
