使用ChannelFactory类实现动态调用WCF地址
使用ChannelFactory类实现动态调用WCF地址
2012-10-25 22:40 来源:博客园 作者:long-gengyun 字号:T|T
[摘要]本文介绍使用ChannelFactory类实现动态调用WCF地址,并提供详细的示例代码供参考。
最近在做的一个项目中需要动态调用WCF地址,因为有很多终端服务器,而每台终端服务器上都部署一个WCF服务,中央服务器需要不定时调用其中某个或者多个WCF服务执行相关操作,因此添加引用及配置文件配置的方法就不太现实,以下提供两种动态调用WCF地址的方法:
1、使用ChannelFactory类,该方法虽然复杂了点,但灵活度最高:
/* ======================================================================== * 【本类功能概述】 ChannelFactory 类创建多个终结点侦听器 * * 作者:EricHu 时间:2012/6/5 14:14:54 * 文件名:WcfChannelFactory * CLR版本:4.0.30319.235 * * 修改者: 时间: * 修改说明: * ======================================================================== */ using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ServiceModel; using System.ServiceModel.Channels; using System.Reflection; namespace JJInn.Baselibray.Common { /// <summary> /// 使用ChannelFactory为wcf客户端创建独立通道 /// </summary> public class WcfChannelFactory { public WcfChannelFactory() { } /// <summary> /// 执行方法 WSHttpBinding /// </summary> /// <typeparam name="T">服务接口</typeparam> /// <param name="uri">wcf地址</param> /// <param name="methodName">方法名</param> /// <param name="args">参数列表</param> public static object ExecuteMetod<T>(string uri, string methodName, params object[] args) { //BasicHttpBinding binding = new BasicHttpBinding(); //出现异常:远程服务器返回错误: (415) Cannot process the message because the content type 'text/xml; charset=utf-8' was not the expected type 'application/soap+xml; charset=utf-8'.。 WSHttpBinding binding = new WSHttpBinding(); EndpointAddress endpoint = new EndpointAddress(uri); using (ChannelFactory<T> channelFactory = new ChannelFactory<T>(binding, endpoint)) { T instance = channelFactory.CreateChannel(); using (instance as IDisposable) { try { Type type = typeof(T); MethodInfo mi = type.GetMethod(methodName); return mi.Invoke(instance, args); } catch (TimeoutException) { (instance as ICommunicationObject).Abort(); throw; } catch (CommunicationException) { (instance as ICommunicationObject).Abort(); throw; } catch (Exception vErr) { (instance as ICommunicationObject).Abort(); throw; } } } } //nettcpbinding 绑定方式 public static object ExecuteMethod<T>(string pUrl, string pMethodName,params object[] pParams) { EndpointAddress address = new EndpointAddress(pUrl); Binding bindinginstance = null; NetTcpBinding ws = new NetTcpBinding(); ws.MaxReceivedMessageSize = 20971520; ws.Security.Mode = SecurityMode.None; bindinginstance = ws; using (ChannelFactory<T> channel = new ChannelFactory<T>(bindinginstance, address)) { T instance = channel.CreateChannel(); using (instance as IDisposable) { try { Type type = typeof(T); MethodInfo mi = type.GetMethod(pMethodName); return mi.Invoke(instance, pParams); } catch (TimeoutException) { (instance as ICommunicationObject).Abort(); throw; } catch (CommunicationException) { (instance as ICommunicationObject).Abort(); throw; } catch (Exception vErr) { (instance as ICommunicationObject).Abort(); throw; } } } } } }
调用示例:
string uri = "http://localhost:9998/mywcf/Service"; object o = ExecuteMetod<IService>(uri, "Add",12.0,13.0); Console.WriteLine(o.ToString()); Console.ReadKey();
2、简单方法,不考虑太多,直接调用:
EndpointAddress address1 = new EndpointAddress("http://localhost:9998/mywcf/Service"); ServiceClient service1 = new ServiceClient(new WSHttpBinding(), address1); Console.WriteLine(service1.Add(12.0, 13.0).ToString());