意图：为了是客户端代理呈现出面向对象的多态的特征
a. 服务端
1.契约 实现了契约的继承这个在服务端是一点问题没有，因为oprationcontract可以继承，虽然DataContract不能实现继承，注意IAnimal和IDog都是契约，但是我们通常喜欢用最
具体的那个契约来发布服务，因为他最丰富
using System;
using System.ServiceModel;namespace WCF.Chapter2.InheritanceProxyChaining.Host
{[ServiceContract]public interface IAnimal{[OperationContract]string AnimalSay();}[ServiceContract]public interface IDog : IAnimal{[OperationContract]string DogSay();}
}2.服务的实现
using System;
using System.ServiceModel;namespace WCF.Chapter2.InheritanceProxyChaining.Host
{public class Service : IDog{public string AnimalSay(){return "动物会叫会走路...";}public string DogSay(){return "小狗汪汪叫...";}}
}3.服务寄宿
using System;
using System.ServiceModel;namespace WCF.Chapter2.InheritanceProxyChaining.Host
{class Program{static void Main(string[] args){using (ServiceHost host = new ServiceHost(typeof(Service))){host.Opened += delegate{Console.WriteLine("服务已开启...");};host.Open();Console.ReadLine();}Console.WriteLine("服务已关闭...");Console.ReadLine();}}
}4.终结点配置 契约使用IDog的契约来发布服务
<?xml version="1.0" encoding="utf-8" ?>
<configuration><system.serviceModel><behaviors><serviceBehaviors><behavior name="MEX"><serviceMetadata httpGetEnabled="true"/></behavior></serviceBehaviors></behaviors><services>      <service name="WCF.Chapter2.InheritanceProxyChaining.Host.Service" behaviorConfiguration="MEX"><host><baseAddresses><add baseAddress="http://loacalhost:8000/"/></baseAddresses></host><endpoint address="http://localhost:8001/Dog" binding="basicHttpBinding" contract="WCF.Chapter2.InheritanceProxyChaining.Host.IDog"></endpoint></service></services></system.serviceModel>
</configuration>
b. 客户端
1.契约继承 只有命名空间不一样而已
using System;
using System.ServiceModel;namespace WCF.Chapter2.InheritanceProxyChaining.Client
{[ServiceContract]public interface IAnimal{[OperationContract]string AnimalSay();}[ServiceContract]public interface IDog : IAnimal{[OperationContract]string DogSay();}
}
2. 客户端代理链的实现
using System;
using System.ServiceModel;namespace WCF.Chapter2.InheritanceProxyChaining.Client
{//clientbase<T> T使用最具体的接口public class AnimalClientProxy : ClientBase<IDog>, IAnimal{public string AnimalSay(){return base.Channel.AnimalSay();}}//代理链继承上一级代理实现public class DogClientProxy : AnimalClientProxy, IDog{public string DogSay(){return base.Channel.DogSay();}}
}
3. 本地调用最终呈现出了面向对象的多态，本地化之后就是CLR的内容了，能实现面向对象的特性也是正常的
using System;
using System.ServiceModel;namespace WCF.Chapter2.InheritanceProxyChaining.Client
{class Program{static void Main(string[] args){using (AnimalClientProxy animalProxy = new AnimalClientProxy()){Console.WriteLine(animalProxy.AnimalSay());Console.WriteLine();}using (AnimalClientProxy animalProxy1 = new DogClientProxy()){Console.WriteLine(animalProxy1.AnimalSay());Console.WriteLine();}using (DogClientProxy dogProxy = new DogClientProxy()){Console.WriteLine(dogProxy.AnimalSay());Console.WriteLine(dogProxy.DogSay());Console.WriteLine();}Console.ReadLine();}}
}4.客户端终结点 用的也是最具体的契约
<?xml version="1.0" encoding="utf-8" ?>
<configuration><system.serviceModel><behaviors><serviceBehaviors><behavior name="MEX"><serviceMetadata httpGetEnabled="true"/></behavior></serviceBehaviors></behaviors><services>      <service name="WCF.Chapter2.InheritanceProxyChaining.Host.Service" behaviorConfiguration="MEX"><host><baseAddresses><add baseAddress="http://loacalhost:8000/"/></baseAddresses></host><endpoint address="http://localhost:8001/Dog" binding="basicHttpBinding" contract="WCF.Chapter2.InheritanceProxyChaining.Host.IDog"></endpoint></service></services></system.serviceModel>
</configuration>