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();

}

}