《WCF服务编程 第一章 WCF基础》第二回 编程方式实现一个WCF服务

新建一个工程，新建一个类库StartService，新建一个类CodeWCF.cs，代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using System.Runtime.Remoting;
using System.Runtime;
using System.ServiceModel.Description;
using System.Runtime.Serialization;

namespace StartService
{
    public class CodeWCF
    {
        static void Main()
        {
            ServiceHost host = new ServiceHost(typeof(Service), new Uri("http://localhost:8001"));  //实例化一个宿主

            try
            {
                //定义一个服务元数据行为对象
                ServiceMetadataBehavior smb = host.Description.Behaviors.Find<ServiceMetadataBehavior>();
                if (smb == null)    //如果这个对象是空,意思就是没有这个服务元数据行为
                    smb = new ServiceMetadataBehavior();     //实例化一个服务元数据行为
                smb.HttpGetEnabled = true;      //让客户端能得到元数据
                smb.MetadataExporter.PolicyVersion = PolicyVersion.Policy15;  //元数据导出规则WS1.5
                host.Description.Behaviors.Add(smb);   //在宿主上加上定义的服务元数据行为
                //在宿主上加上定义的元数据节点如同下句作用
                //<endpoint name="endpointmex" address="mex1" binding="mexHttpBinding"  contract="IMetadataExchange" />
                host.AddServiceEndpoint(ServiceMetadataBehavior.MexContractName, MetadataExchangeBindings.CreateMexHttpBinding(), "mex");
                //定义客户端终结点
                System.ServiceModel.Channels.Binding wsbinding = new WSHttpBinding();
                //加上终结点
                host.AddServiceEndpoint(typeof(IService), wsbinding, "");

                host.Open();
                Console.WriteLine("服务已启动...");
                Console.ReadLine();
            }
            catch
            {
                CommunicationException ce = new CommunicationException();
                Console.WriteLine(ce.Message);
                Console.ReadLine();
            }
        }

    }

    [ServiceContract]
    public interface IService
    {
        [OperationContract]
        void Fun();
    }
    public class Service : IService
    {
        public void Fun()
        { Console.WriteLine("hello world!"); }
    }
}

第二种代码写法：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using System.Runtime.Remoting;
using System.Runtime;
using System.ServiceModel.Description;
using System.Runtime.Serialization;
using System.ServiceModel.Channels;

namespace StartService
{
    class CodeWCF2
    {
        static  void Main()
        {
            ServiceHost host = new ServiceHost(typeof(Service), new Uri("http://localhost:90"));
            //需要命名空间 using System.ServiceModel.Channels;
            BindingElement bindingElement = new HttpTransportBindingElement();
            CustomBinding binding = new CustomBinding(bindingElement);

            ServiceMetadataBehavior smb = host.Description.Behaviors.Find<ServiceMetadataBehavior>();
            if (smb == null)
            {
                smb = new ServiceMetadataBehavior();
                host.Description.Behaviors.Add(smb);
            }
            host.AddServiceEndpoint(typeof(IMetadataExchange), binding, "mex");
            host.AddServiceEndpoint(typeof(IService), new WSHttpBinding(), "");
            host.Open();
            Console.WriteLine("服务已经启动...");
            Console.ReadLine();
 
        }
    }

    [ServiceContract]
    public interface IService
    {
        [OperationContract]
        void Fun();
    }
    public class Service : IService
    {
        public void Fun()
        { Console.WriteLine("hello world!"); }
    }
}