WCF 接口动态调用（动态创建实例接口）

很多时候，服务地址都不止一个的，这个时候就要动态去配置地址。配置Web.config，很麻烦！！！

在这里我们就先来给大家介绍一种比较简单的应用技巧，WCF动态创建代码的相关实现方法。

一、服务端创建WCF：

public interface ISysInfoService
    {
        
        [OperationContract]
        string GetMemoryInfo();

        [OperationContract]
        string GetDriveSize();

        [OperationContract]
        string GetAdapters();
    }

二、客户端创建WCF工厂

1、引入命名空间

using System.ServiceModel.Channels;
using System.ServiceModel;

2、创建WCF工厂类

public static T CreateWCFServiceByURL(string url, string bing)
        {
            if (string.IsNullOrEmpty(url)) throw new NotSupportedException("this url isn`t Null or Empty!");
            EndpointAddress address = new EndpointAddress(url);
            Binding binding = CreateBinding(bing);
            ChannelFactory factory = new ChannelFactory(binding, address);
            return factory.CreateChannel();
        }

        /// 

        /// 创建传输协议
        /// 
        /// 传输协议名称
        /// 
        private static Binding CreateBinding(string binding)
        {
            Binding bindinginstance = null;
            if (binding.ToLower() == "basichttpbinding")
            {
                BasicHttpBinding ws = new BasicHttpBinding();
                ws.MaxReceivedMessageSize = 65535000;
                bindinginstance = ws;
            }
            else if (binding.ToLower() == "netnamedpipebinding")
            {
                NetNamedPipeBinding ws = new NetNamedPipeBinding();
                ws.MaxReceivedMessageSize = 65535000;
                bindinginstance = ws;
            }
            else if (binding.ToLower() == "netpeertcpbinding")
            {
                NetPeerTcpBinding ws = new NetPeerTcpBinding();
                ws.MaxReceivedMessageSize = 65535000;
                bindinginstance = ws;
            }
            else if (binding.ToLower() == "nettcpbinding")
            {
                NetTcpBinding ws = new NetTcpBinding();
                ws.MaxReceivedMessageSize = 65535000;
                ws.Security.Mode = SecurityMode.None;
                bindinginstance = ws;
            }
            else if (binding.ToLower() == "wsdualhttpbinding")
            {
                WSDualHttpBinding ws = new WSDualHttpBinding();
                ws.MaxReceivedMessageSize = 65535000;
                bindinginstance = ws;
            }
            else if (binding.ToLower() == "wsfederationhttpbinding")
            {
                WSFederationHttpBinding ws = new WSFederationHttpBinding();
                ws.MaxReceivedMessageSize = 65535000;
                bindinginstance = ws;
            }
            else if (binding.ToLower() == "wshttpbinding")
            {
                WSHttpBinding ws = new WSHttpBinding(SecurityMode.None);
                ws.MaxReceivedMessageSize = 2147483647;
                ws.Security.Message.ClientCredentialType = System.ServiceModel.MessageCredentialType.Windows;
                ws.Security.Transport.ClientCredentialType = System.ServiceModel.HttpClientCredentialType.Windows;
                bindinginstance = ws;
            }
            return bindinginstance;
        }

三、调用好实例

sAddress = "http://localhost:8731/Monitor/SysInfoService/";

ISysInfoService obj = InvokeContext.CreateWCFServiceByURL(sAddress);

通过变量sAddress 我们就可以调用多台服务器部署的wcf接口地址了，而不需要给每台服务器配置一个实例。