动态调用WCF地址 (使用ChannelFactory类)

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:

code:

 

  1 /* ========================================================================
  2 * 【本类功能概述】   ChannelFactory 类创建多个终结点侦听器
  3 * 
  4 * 作者：EricHu       时间：2012/6/5 14:14:54
  5 * 文件名：WcfChannelFactory
  6 * CLR版本：4.0.30319.235
  7 *
  8 * 修改者：           时间：              
  9 * 修改说明：
 10 * ========================================================================
 11 */
 12 
 13 using System;
 14 using System.Collections.Generic;
 15 using System.Linq;
 16 using System.Text;
 17 using System.ServiceModel;
 18 using System.ServiceModel.Channels;
 19 using System.Reflection;
 20 
 21 namespace JJInn.Baselibray.Common
 22 {
 23     /// <summary>
 24     /// 使用ChannelFactory为wcf客户端创建独立通道
 25     /// </summary>
 26     public class WcfChannelFactory
 27     {
 28         public WcfChannelFactory()
 29         {
 30         }
 31 
 32         /// <summary>
 33         /// 执行方法   WSHttpBinding
 34         /// </summary>
 35         /// <typeparam name="T">服务接口</typeparam>
 36         /// <param name="uri">wcf地址</param>
 37         /// <param name="methodName">方法名</param>
 38         /// <param name="args">参数列表</param>
 39         public static object ExecuteMetod<T>(string uri, string methodName, params object[] args)
 40         {
 41             //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'.。
 42             WSHttpBinding binding = new WSHttpBinding();
 43             EndpointAddress endpoint = new EndpointAddress(uri);
 44 
 45             using (ChannelFactory<T> channelFactory = new ChannelFactory<T>(binding, endpoint))
 46             {
 47                 T instance = channelFactory.CreateChannel();
 48                 using (instance as IDisposable)
 49                 {
 50                     try
 51                     {
 52                         Type type = typeof(T);
 53                         MethodInfo mi = type.GetMethod(methodName);
 54                         return mi.Invoke(instance, args);
 55                     }
 56                     catch (TimeoutException)
 57                     {
 58                         (instance as ICommunicationObject).Abort();
 59                         throw;
 60                     }
 61                     catch (CommunicationException)
 62                     {
 63                         (instance as ICommunicationObject).Abort();
 64                         throw;
 65                     }
 66                     catch (Exception vErr)
 67                     {
 68                         (instance as ICommunicationObject).Abort();
 69                         throw;
 70                     }
 71                 }
 72             }
 73 
 74 
 75         }
 76 
 77 
 78         //nettcpbinding 绑定方式
 79         public static object ExecuteMethod<T>(string pUrl, string pMethodName,params object[] pParams)
 80         {
 83                 EndpointAddress address = new EndpointAddress(pUrl);
 84                 Binding bindinginstance = null;
 85                 NetTcpBinding ws = new NetTcpBinding();
 86                 ws.MaxReceivedMessageSize = 20971520;
 87                 ws.Security.Mode = SecurityMode.None;
 88                 bindinginstance = ws;
 89                 using (ChannelFactory<T> channel = new ChannelFactory<T>(bindinginstance, address))
 90                 {
 91                     T instance = channel.CreateChannel();
 92                     using (instance as IDisposable)
 93                     {
 94                         try
 95                         {
 96                             Type type = typeof(T);
 97                             MethodInfo mi = type.GetMethod(pMethodName);
 98                             return mi.Invoke(instance, pParams);
 99                         }
100                         catch (TimeoutException)
101                         {
102                             (instance as ICommunicationObject).Abort();
103                             throw;
104                         }
105                         catch (CommunicationException)
106                         {
107                             (instance as ICommunicationObject).Abort();
108                             throw;
109                         }
110                         catch (Exception vErr)
111                         {
112                             (instance as ICommunicationObject).Abort();
113                             throw;
114                         }
115                     }
116                 }
122         }
123     }
124 }

调用示例:

 

 string uri = "http://localhost:9998/mywcf/Service";
2             object o = ExecuteMetod<IService>(uri, "Add",12.0,13.0);
3             Console.WriteLine(o.ToString());
4             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");
2 ServiceClient service1 = new ServiceClient(new WSHttpBinding(), address1);
3 Console.WriteLine(service1.Add(12.0, 13.0).ToString());