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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)
        }


        
/// <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]