WCF学习笔记 -- 如何用C#开发一个WebService

假设所有工程的命名空间是demo。

1. 新建一个C#的ClassLibrary（类库）工程。
2. 在工程引用中加入System.ServiceModel引用。
3. 定义接口，你可以删除自动生成的代码，或者直接修改代码来添加接口。

[ServiceContract]

Interface IMath {

[Operationcontract]

            Int add (int a, int b);

}

1. 实现接口

添加一个新类，如Math实现该接口。

Public class Math : IMath{

            Int add(int a,int b){

                        Return (a+b);

}

}

1. 编写寄宿应用程序，新建一个控制台或者Winform程序。添加对System.ServiceModel和System.ServiceModel.Channels的引用。
   1. 通过代码绑定。

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ServiceModel;

using System.ServiceModel.Channels;

namespace HelloServiceHost

{

    class Program

    {

        static void Main(string[] args)

        {

            using (MyHelloHost host = new MyHelloHost())

            {

                host.openService();

            }

        }

    }

    public class MyHelloHost : IDisposable

    {

        private ServiceHost serviceHost = null;

        /// <summary>

        /// base address

        /// </summary>

        //public const string baseAddress = "net.pipe://localhost";

        public const string baseAddress = "http://localhost";

        /// <summary>

        /// 服务名称

        /// </summary>

        public const string serviceAddress = "MathService";

       

        /// <summary>

        /// 实现服务的契约

        /// </summary>

        public static readonly Type serviceType=typeof(demo.Math);

       

        /// <summary>

        /// 接口契约

        /// </summary>

        public static readonly Type contractType = typeof(HelloService.IHelloService);

        /// <summary>

        /// 定义一个服务绑定

        /// </summary>

        //public static readonly Binding helloBinding = new NetNamedPipeBinding();

        public static readonly Binding helloBinding = new BasicHttpBinding();

        /// <summary>

        /// 构造服务宿主

        /// </summary>

        private void createHelloServiceHost()

        {

            ///创建服务对象

            serviceHost = new ServiceHost(serviceType,new Uri[]{new Uri(baseAddress)});

            ///添加一个终结点

            serviceHost.AddServiceEndpoint(contractType, helloBinding, serviceAddress);

        }

        public ServiceHost ServiceHost

        {

            get { return serviceHost; }

        }

        /// <summary>

        /// 打开服务

        /// </summary>

        public void openService()

        {

            Console.WriteLine("Service is starting...");

            serviceHost.Open();

            Console.WriteLine("Service running...");

        }

        public MyHelloHost()

        {

            createHelloServiceHost();

        }

        public void Dispose()

        {

            if (null != serviceHost)

            {

                (serviceHost as IDisposable).Dispose();

            }

        }

    }

}

1. 通过配置文件绑定。如果是控制台程序，请添加App.config文件，并修改如下，如果是Winform直接修改App.config文件。

1a)  修改App.Config

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

  <system.serviceModel>

    <services>

      <service name="demo.Math" behaviorConfiguration="TestBehavior">

        <host>

          <baseAddresses>

            <add baseAddress="http://localhost:8001/MathService"/>

          </baseAddresses>

        </host>

        <endpoint address="" binding="basicHttpBinding" contract="demo.IHello" />

      </service>

    </services>

    <behaviors>

      <serviceBehaviors>

        <behavior name="TestBehavior">

          <serviceMetadata httpGetEnabled="true"/>

        </behavior>

      </serviceBehaviors>

    </behaviors>

  </system.serviceModel>

</configuration>

1b)  修改代码如下

    class Program

    {

        static void Main(string[] args)

        {

            ServiceHost host = new ServiceHost(typeof(demo.Math));

            host.Open();

            Console.ReadKey();

        }

}