化零为整WCF(5) - 宿主Hosting(宿主在IIS, Application, WAS, WindowsService)

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化零为整WCF(5) - 宿主Hosting(宿主在IIS, Application, WAS, WindowsService)

作者： webabcd


介绍
WCF(Windows Communication Foundation) - 宿主(Hosting)：WCF服务可以宿主在IIS, Application, WAS, WindowsService。本文以宿主在WindowsService为例。


示例
1、服务
IHello.cs

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;

using  System.ServiceModel;

namespace  WCF.ServiceLib.Sample
{
    /**//// <summary>
    /// IHello接口
    /// </summary>
    [ServiceContract]
    public interface IHello
    {
        /**//// <summary>
        /// 打招呼方法
        /// </summary>
        /// <param name="name">人名</param>
        /// <returns></returns>
        [OperationContract]
        string SayHello(string name);
    }
}

Hello.cs

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;

using  System.ServiceModel;

namespace  WCF.ServiceLib.Sample
{
    /**//// <summary>
    /// Hello类
    /// </summary>
    public class Hello : IHello
    {
        /**//// <summary>
        /// 打招呼方法
        /// </summary>
        /// <param name="name">人名</param>
        /// <returns></returns>
        public string SayHello(string name)
        {
            return "Hello: " + name;
        }
    }
}

2、宿主
Hello.cs(WindowsService)

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;

using  System.ComponentModel;
using  System.Configuration;
using  System.Configuration.Install;
using  System.ServiceModel;
using  System.ServiceProcess;

namespace  WCF.ServiceHostByWindowsService.Sample
{
    /**//// <summary>
    /// 初始化 System.Configuration.Install.Installer 类的新实例。
    /// </summary>
    [RunInstaller(true)]
    public class ProjectInstaller : Installer
    {
        private ServiceProcessInstaller process;
        private ServiceInstaller service;

        /**//// <summary>
        /// 构造函数
        /// </summary>
        public ProjectInstaller()
        {
            process = new ServiceProcessInstaller();
            process.Account = ServiceAccount.LocalSystem;
            service = new ServiceInstaller();
            service.ServiceName = "WCF.ServiceHostByWindowsService";
            service.Description = "WCF服务宿主在WindowsService[webabcd测试用]";
            base.Installers.Add(process);
            base.Installers.Add(service);
        }
    }

    /**//// <summary>
    /// Windows服务类
    /// </summary>
    public class WindowsService : ServiceBase
    {
        public ServiceHost serviceHost = null;

        /**//// <summary>
        /// 主函数
        /// </summary>
        public static void Main()
        {
            ServiceBase.Run(new WindowsService());
        }

        /**//// <summary>
        /// 构造函数
        /// </summary>
        public WindowsService()
        {
            base.ServiceName = "WCF.ServiceHostByWindowsService";
        }

        /**//// <summary>
        /// 启动Windows服务
        /// </summary>
        /// <param name="args">args</param>
        protected override void OnStart(string[] args)
        {
            if (serviceHost != null)
            {
                serviceHost.Close();
            }

            // 为WCF.ServiceLib.Sample.Hello创建ServiceHost
            serviceHost = new ServiceHost(typeof(WCF.ServiceLib.Sample.Hello));

            serviceHost.Open();

            ServiceHost的几个事件（顾名思义）#region ServiceHost的几个事件（顾名思义）
            /**//*
            serviceHost.Opening += 
            serviceHost.Opened += 
            serviceHost.Closing += 
            serviceHost.Faulted += 
            serviceHost.UnknownMessageReceived += 
             */
            #endregion
        }

        /**//// <summary>
        /// 停止Windows服务
        /// </summary>
        protected override void OnStop()
        {
            if (serviceHost != null)
            {
                serviceHost.Close();
                serviceHost = null;
            }
        }
    }
}

App.config

<? xml version="1.0" encoding="utf-8"  ?>
< configuration >
   < system.serviceModel >
     < services >
       <!-- name - 提供服务的类名 -->
       <!-- behaviorConfiguration - 指定相关的行为配置 -->
       < service  name ="WCF.ServiceLib.Sample.Hello"  behaviorConfiguration ="SampleBehavior" >
         <!-- address - 服务地址 -->
         <!-- binding - 通信方式 -->
         <!-- contract - 服务契约 -->
         < endpoint  address =""  binding ="wsHttpBinding"  contract ="WCF.ServiceLib.Sample.IHello"   />
         <!-- 元数据交换的endpoint -->
         <!-- 注：address是mex，它会和host/baseAddresses节点中的baseAddress做拼接，即提供元数据交换的地址为：http://localhost:12345/Binding/mex -->
         < endpoint  binding ="mexHttpBinding"  contract ="IMetadataExchange"  address ="mex"   />
         < host >
           < baseAddresses >
             < add  baseAddress ="http://localhost:11233/ServiceHostByWindowsService/" />
           </ baseAddresses >
         </ host >
       </ service >
     </ services >
     < behaviors >
       < serviceBehaviors >
         < behavior  name ="SampleBehavior" >
           < serviceMetadata  httpGetEnabled ="True" />
           < serviceDebug  includeExceptionDetailInFaults ="False"   />
         </ behavior >
       </ serviceBehaviors >
     </ behaviors >
   </ system.serviceModel >
</ configuration >

3、客户端
Hello.aspx

<% @ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Hello.aspx.cs"
    Inherits="Hosting_Hello" Title="宿主Hosting(服务宿主在WindowsService)"  %>

< asp:Content  ID ="Content1"  ContentPlaceHolderID ="head"  runat ="Server" >
</ asp:Content >
< asp:Content  ID ="Content2"  ContentPlaceHolderID ="ContentPlaceHolder1"  runat ="Server" >
     < div >
         < ul >
             < li  style ="color: Red;" > 本例为宿主在WindowsService的示例 </ li >
             < li > 宿主在IIS请参见本解决方案的ServiceHost项目 </ li >
             < li > 宿主在应用程序请参见本解决方案的ServiceHost2项目 </ li >
             < li > 应用程序自宿主就是把本解决方案的ServiceLib项目和ServiceHost2项目结合在一起 </ li >
             < li > 宿主在Windows Activation Services(WAS)，因为我没有环境，就先不写示例了 </ li >
         </ ul >
     </ div >
     < asp:TextBox  ID ="txtName"  runat ="server"  Text ="webabcd"   />
     &nbsp;
     < asp:Button  ID ="btnSayHello"  runat ="server"  Text ="Hello"  OnClick ="btnSayHello_Click"   />
</ asp:Content >

Hello.aspx.cs

using  System;
using  System.Collections;
using  System.Configuration;
using  System.Data;
using  System.Linq;
using  System.Web;
using  System.Web.Security;
using  System.Web.UI;
using  System.Web.UI.HtmlControls;
using  System.Web.UI.WebControls;
using  System.Web.UI.WebControls.WebParts;
using  System.Xml.Linq;

public   partial   class  Hosting_Hello : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void btnSayHello_Click(object sender, EventArgs e)
    {
        var proxy = new HostingByWindowsService.HelloClient();

        Page.ClientScript.RegisterStartupScript(
            this.GetType(),
            "js",
            string.Format("alert('{0}')", proxy.SayHello(txtName.Text)),
            true);

        proxy.Close();
    }
}

Web.config

<? xml version="1.0" ?>
< configuration >
   < system.serviceModel >
     < client >
       <!-- address - 服务地址 -->
       <!-- binding - 通信方式 -->
       <!-- contract - 服务契约 -->
       < endpoint  address ="http://localhost:11233/ServiceHostByWindowsService/"  binding ="wsHttpBinding"  contract ="Sample.IHello"   />
     </ client >
   </ system.serviceModel >
</ configuration >

运行结果：
启动 "WCF.ServiceHostByWindowsService"服务，单击"Hello "按钮后弹出提示框，显示"Hello: webabcd"


OK
[源码下载]