动态调用WebService方法

好像很多人做WebService的时候都是直接添加引用的方式，然后调用服务端的方法.这样就个问题，就是每次我服务端添加了方法或者修改了方法后都要更新Web引用，这样比较麻烦.下面给一个不用添加引用的方式调用服务端的方法.只是一个简单的测试，不是很规范,用得着的人可以自己封装一下,然后直接传服务端的方法名进去，Type.getmethod获取方法,然后method.Invoke返回结果
高手些多多包函,主要是给用得着的人参考一下,互相学习.代码主要是用了 System.Web.Services.Description里的东西

新建一个WebService项目，添加以下代码：

using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Collections.Generic; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Linq; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services; namespace TestWebService { /// <summary> /// Service1 的<a href="/tag/zhaiyao/" target="_blank" class="keywords">摘要</a>说明 /// </summary> [WebService(Namespace = "http://te<a href="/tag/mpu/" target="_blank" class="keywords">mpu</a>ri.org/",Description="我的Web服务")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.ComponentModel.Tool<a href="/tag/Box/" target="_blank" class="keywords">Box</a>Item(false)] // 若要允许使用 ASP.NET AJAX 从脚本中<a href="/tag/diaoyong/" target="_blank" class="keywords">调用</a>此 Web 服务，请取消对下行的注释。 // [Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Script.Services.ScriptService] public class TestWebService : Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.WebService { [WebMethod] public string HelloWorld() { return "测试Hello World"; } [WebMethod] public string <a href="/tag/test/" target="_blank" class="keywords">test()</a> { return "测试Test"; } [WebMethod(CacheDuration = 60,Description = "测试")] public List<String> GetPersons() { List<String> list = new List<string>(); list.Add("测试一"); list.Add("测试二"); list.Add("测试三"); return list; } } }

 

 

下面是客户端：

using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.IO; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Collections.Generic; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Linq; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Collections; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Net; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Reflection; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.CodeDom; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.CodeDom.Compiler; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Text; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.Description; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.Protocols; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Xml.Serialization; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Forms; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { WebClient client = new WebClient(); String url = "http://localhost:3182/Service1.asmx?WSDL";//这个地址可以写在Con<a href="/tag/fig/" target="_blank" class="keywords">fig</a><a href="/tag/wenjian/" target="_blank" class="keywords">文件</a>里面，这里取出来就行了.在原地址后面<a href="/tag/jiashang/" target="_blank" class="keywords">加上</a>： ?WSDL Stream stream = client.OpenRead(url); ServiceDescription description = ServiceDescription.Read(stream); ServiceDescriptionImporter importer = new ServiceDescriptionImporter();//创建客户端代理代理类。 importer.ProtocolName = "Soap"; //指定访问协议。 importer.Style = ServiceDescriptionImportStyle.Client; //<a href="/tag/shengcheng/" target="_blank" class="keywords">生成</a>客户端代理。 importer.CodeGeneratio<a href="/tag/nop/" target="_blank" class="keywords">nop</a>tions = CodeGeneratio<a href="/tag/nop/" target="_blank" class="keywords">nop</a>tions.GenerateProperties | CodeGeneratio<a href="/tag/nop/" target="_blank" class="keywords">nop</a>tions.GenerateNewAsync; importer.AddServiceDescription(description,null,null); //<a href="/tag/tianjia/" target="_blank" class="keywords">添加</a>WSDL文档。 CodeNamespace nmspace = new CodeNamespace(); //命名空间 nmspace.Name = "TestWebService"; CodeCompileUnit unit = new CodeCompileUnit(); unit.Namespaces.Add(nmspace); ServiceDescriptionImportWarnings warning = importer.Import(nmspace,unit); CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp"); CompilerP<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meters p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter = new CompilerP<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meters(); p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter.GenerateExecutable = false; p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter.OutputAssembly = "MyTest.dll";//<a href="/tag/shuchu/" target="_blank" class="keywords">输出</a>程序集的<a href="/tag/mingcheng/" target="_blank" class="keywords">名称</a> p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter.ReferencedAssemblies.Add("Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.dll"); p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter.ReferencedAssemblies.Add("Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.XML.dll"); p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter.ReferencedAssemblies.Add("Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.dll"); p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter.ReferencedAssemblies.Add("Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Data.dll"); CompilerResults result = provider.CompileAssemblyFromDom(p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter,unit); if (result.Errors.HasErrors) { // <a href="/tag/xianshi/" target="_blank" class="keywords">显示</a>编译<a href="/tag/cuowu/" target="_blank" class="keywords">错误</a>信息 } Assembly asm = Assembly.LoadFrom("MyTest.dll");//加载前面<a href="/tag/shengcheng/" target="_blank" class="keywords">生成</a>的程序集 Type t = asm.GetType("TestWebService.TestWebService"); object o = Activator.CreateInstance(t); MethodInfo method = t.<a href="/tag/getmethod/" target="_blank" class="keywords">getmethod</a>("GetPersons");//GetPersons是服务端的<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a><a href="/tag/mingcheng/" target="_blank" class="keywords">名称</a>,你想<a href="/tag/diaoyong/" target="_blank" class="keywords">调用</a>服务端的什么<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>都可以<a href="/tag/zaizheli/" target="_blank" class="keywords">在这里</a>改,最好封装一下 String[] item = (String[])method.Invoke(o,null); //注：method.Invoke(o,null)返回的是<a href="/tag/yige/" target="_blank" class="keywords">一个</a>Object,如果你服务端返回的是DataSet,这里也是用(DataSet)method.Invoke(o,null)转一下就行了 foreach (string str in item) Console.WriteLine(str); //上面是根据WebService地址，模似<a href="/tag/shengcheng/" target="_blank" class="keywords">生成</a><a href="/tag/yige/" target="_blank" class="keywords">一个</a>代理类,如果你想看看<a href="/tag/shengcheng/" target="_blank" class="keywords">生成</a>的<a href="/tag/daima/" target="_blank" class="keywords">代码</a><a href="/tag/wenjian/" target="_blank" class="keywords">文件</a>是什么样子，可以用以下<a href="/tag/daima/" target="_blank" class="keywords">代码</a>保存下来，<a href="/tag/mo/" target="_blank" class="keywords">默</a>认是保存在bin目录下面 TextWriter writer = File.CreateText("MyTest.cs"); provider.GenerateCodeFromCompileUnit(unit,writer,null); writer.Flush(); writer.Close(); } } }