方法一：
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Web.Services.Description; using Microsoft.CSharp; using System.CodeDom.Compiler; using System.CodeDom; using System.Net; namespace WebServiceClient { public class WebServiceHelper { /// <summary> /// 动态调用WebService /// </summary> /// <param name="url">WebService地址</param> /// <param name="classname">类名</param> /// <param name="methodname">方法名(模块名)</param> /// <param name="args">参数列表</param> /// <returns>object</returns> public static object InvokeWebService(string url, string classname, string methodname, object[] args) { string @namespace = "ServiceBase.WebService.DynamicWebLoad"; if (classname == null || classname == "") { classname = WebServiceHelper.GetClassName(url); } //获取服务描述语言(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(); //设定编译器的参数 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 StringBuilder(); foreach (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); } private static string GetClassName(string url) { string[] parts = url.Split('/'); string[] pps = parts[parts.Length - 1].Split('.'); return pps[0]; } } }
调用接口
string surl = "http://localhost:41765/WebServiceDemo.asmx"; string sclass = ""; string sname = "TestWithParam"; object[] args = { "动态调用WebService" }; this.txtinfo.Text = WebServiceHelper.InvokeWebService(surl, sclass, sname, args).ToString();
方法二：
using System; using System.CodeDom; using System.CodeDom.Compiler; using System.IO; using System.Net; using System.Text; using System.Web; using System.Web.Caching; using System.Web.Services.Description; using System.Xml.Serialization; namespace WebServiceClient { public class WebServiceHelper0 { /// <summary> /// 生成dll文件保存到本地 /// </summary> /// <param name="url">WebService地址</param> /// <param name="className">类名</param> /// <param name="methodName">方法名</param> /// <param name="filePath">保存dll文件的路径</param> public static void CreateWebServiceDLL(string url, string className, string methodName, string filePath) { // 1. 使用 WebClient 下载 WSDL 信息。 WebClient web = new WebClient(); Stream stream = web.OpenRead(url + "?WSDL"); // 2. 创建和格式化 WSDL 文档。 ServiceDescription description = ServiceDescription.Read(stream); //如果不存在就创建file文件夹 if (Directory.Exists(filePath) == false) { Directory.CreateDirectory(filePath); } if (File.Exists(filePath + className + "_" + methodName + ".dll")) { //判断缓存是否过期 var cachevalue = HttpRuntime.Cache.Get(className + "_" + methodName); if (cachevalue == null) { //缓存过期删除dll File.Delete(filePath + className + "_" + methodName + ".dll"); } else { // 如果缓存没有过期直接返回 return; } } // 3. 创建客户端代理代理类。 ServiceDescriptionImporter importer = new ServiceDescriptionImporter(); // 指定访问协议。 importer.ProtocolName = "Soap"; // 生成客户端代理。 importer.Style = ServiceDescriptionImportStyle.Client; importer.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties | CodeGenerationOptions.GenerateNewAsync; // 添加 WSDL 文档。 importer.AddServiceDescription(description, null, null); // 4. 使用 CodeDom 编译客户端代理类。 // 为代理类添加命名空间，缺省为全局空间。 CodeNamespace nmspace = new CodeNamespace(); CodeCompileUnit unit = new CodeCompileUnit(); unit.Namespaces.Add(nmspace); ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit); CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp"); CompilerParameters parameter = new CompilerParameters(); parameter.GenerateExecutable = false; // 可以指定你所需的任何文件名。 parameter.OutputAssembly = filePath + className + "_" + methodName + ".dll"; parameter.ReferencedAssemblies.Add("System.dll"); parameter.ReferencedAssemblies.Add("System.XML.dll"); parameter.ReferencedAssemblies.Add("System.Web.Services.dll"); parameter.ReferencedAssemblies.Add("System.Data.dll"); // 生成dll文件，并会把WebService信息写入到dll里面 CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit); if (result.Errors.HasErrors) { // 显示编译错误信息 System.Text.StringBuilder sb = new StringBuilder(); foreach (CompilerError ce in result.Errors) { sb.Append(ce.ToString()); sb.Append(System.Environment.NewLine); } throw new Exception(sb.ToString()); } //记录缓存 var objCache = HttpRuntime.Cache; // 缓存信息写入dll文件 objCache.Insert(className + "_" + methodName, "1", null, DateTime.Now.AddMinutes(5), TimeSpan.Zero, CacheItemPriority.High, null); } } }
接口调用
配置文件
<?xml version="1.0" encoding="utf-8" ?> <configuration> <appSettings> <!--WebService地址--> <add key="WebServiceAddress" value="http://localhost:41765/WebServiceDemo.asmx"/> <!--WebService提供的类名--> <add key="ClassName" value="WebServiceDemo"/> <!--WebService方法名--> <add key="MethodName" value="TestWithParam"/> <!--存放dll文件的地址--> <add key="FilePath" value="D:\测试Demo\WebService"/> </appSettings> </configuration>
// 读取配置文件，获取配置信息 string url = ConfigurationManager.AppSettings["WebServiceAddress"]; string className = ConfigurationManager.AppSettings["ClassName"]; string methodName = ConfigurationManager.AppSettings["MethodName"]; string filePath = ConfigurationManager.AppSettings["FilePath"]; // 调用WebServiceHelper WebServiceHelper0.CreateWebServiceDLL(url, className, methodName, filePath); // 读取dll内容 byte[] filedata = File.ReadAllBytes(filePath + className + "_" + methodName + ".dll"); // 加载程序集信息 Assembly asm = Assembly.Load(filedata); Type t = asm.GetType(className); // 创建实例 object o = Activator.CreateInstance(t); MethodInfo method = t.GetMethod(methodName); // 参数 object[] args = { "动态调用WebService" }; // 调用访问，获取方法返回值 string value = method.Invoke(o, args).ToString(); //输出返回值 MessageBox.Show($"返回值:{value}");
demo下载地址：https://quqi.gblhgk.com/s/3942311/uB6laF2mD7PgrqYF