C# WCF初识

原文：http://www.cnblogs.com/artech/archive/2007/02/26/656901.html

方式1：

需引用 System.ServiceModel

namespace ConsoleApplication1
{

    /*
     契约（Contracts）：主要定义了实现那些服务，如何访问服务
     契约 通常是一个 接口，定义了我们会提供哪些服务。
         */
    [ServiceContract(Name = "CalculatorService", Namespace = "http://www.artech.com/")]
    public interface ICalculator
    {
        //在方法上 声明OperationContract 表示该方法是一个对外的服务
        [OperationContract]
        double Add(double x, double y);

        [OperationContract]
        double Subtract(double x, double y);

        [OperationContract]
        double Multiply(double x, double y);

        [OperationContract]
        double Divide(double x, double y);
    }

    /*
     服务 则是如何实现这个契约
         */
    public class CalculatorService : ICalculator
    {
        public double Add(double x, double y)
        {
            return x + y;
        }
        public double Subtract(double x, double y)
        {
            return x - y;
        }
        public double Multiply(double x, double y)
        {
            return x * y;
        }
        public double Divide(double x, double y)
        {
            return x / y;
        }
    }
}

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            //原文：http://www.cnblogs.com/artech/archive/2007/02/26/656901.html
            using (ServiceHost host = new ServiceHost(typeof(CalculatorService)))
            {
                host.AddServiceEndpoint(typeof(ICalculator), new WSHttpBinding(), "http://127.0.0.1:9999/calculatorservice");
                if (host.Description.Behaviors.Find<ServiceMetadataBehavior>() == null)
                {
                    ServiceMetadataBehavior behavior = new ServiceMetadataBehavior();
                    behavior.HttpGetEnabled = true;
                    behavior.HttpGetUrl = new Uri("http://127.0.0.1:9999/calculatorservice/metadata");
                    host.Description.Behaviors.Add(behavior);
                }
                host.Opened += delegate
                {
                    Console.WriteLine("CalculaorService已经启动，按任意键终止服务！");
                };
                host.Open();
                Console.Read();
            }
        }
    }
}

//方式2（配置App.config）：

namespace ConsoleApplication1
{

    /*
     契约（Contracts）：主要定义了实现那些服务，如何访问服务
     契约 通常是一个 接口，定义了我们会提供哪些服务。
         */
    [ServiceContract(Name = "CalculatorService", Namespace = "http://www.artech.com/")]
    public interface ICalculator
    {
        //在方法上 声明OperationContract 表示该方法是一个对外的服务
        [OperationContract]
        double Add(double x, double y);

        [OperationContract]
        double Subtract(double x, double y);

        [OperationContract]
        double Multiply(double x, double y);

        [OperationContract]
        double Divide(double x, double y);
    }

    /*
     服务 则是如何实现这个契约
         */
    public class CalculatorService : ICalculator
    {
        public double Add(double x, double y)
        {
            return x + y;
        }
        public double Subtract(double x, double y)
        {
            return x - y;
        }
        public double Multiply(double x, double y)
        {
            return x * y;
        }
        public double Divide(double x, double y)
        {
            return x / y;
        }
    }
}

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            //原文：http://www.cnblogs.com/artech/archive/2007/02/26/656901.html

            //WCF服务寄宿通过一个特殊的对象完成：ServiceHost。
            //在上面的例子中，基于WCF服务的类型（typeof(CalculatorService)）创建了ServieHost对象，并添加了一个终结点。
            //具体的地址为http://127.0.0.1:9999/calculatorservice，采用了WSHttpBinding，并指定了服务契约的类型ICalculator。

            //接下来是要将这个服务承载于宿主中。和为这个服务分配一个访问的地址。这时，需要新建一个App.config配置文件
            ServiceHost host = new ServiceHost(typeof(CalculatorService));//将服务寄宿在宿主中
            host.Open();//运行
            Console.WriteLine("服务已启动、、、");
            Console.ReadKey(true);
            host.Close(); //关闭
        }
    }
}

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="metadataBehavior">
          <serviceMetadata httpGetEnabled="true" httpGetUrl="http://127.0.0.1:9999/calculatorservice/metadata" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="metadataBehavior" name="ConsoleApplication1.CalculatorService">
        <endpoint address="http://127.0.0.1:9999/calculatorservice" binding="wsHttpBinding" contract="ConsoleApplication1.ICalculator" />
      </service>
    </services>
  </system.serviceModel>
</configuration>