WCF 中 使用 Session

WCF 中 使用 Session

 

1.标记WCF服务开启Session模式,使用SessionMode 来使Session有效化

[ServiceContract(SessionMode = SessionMode.Required)]

 

 

2.服务类添加ASPNETSESSION兼容标记

[System.ServiceModel.Activation.AspNetCompatibilityRequirements(RequirementsMode = System.ServiceModel.Activation.AspNetCompatibilityRequirementsMode.Required)]

  
using System;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.ServiceModel.Activation;

using System.Collections.Generic;

using System.Text;







namespace Service

{

    [ServiceContract(SessionMode = SessionMode.Required)]

    [AspNetCompatibilityRequirements(RequirementsMode = System.ServiceModel.Activation.AspNetCompatibilityRequirementsMode.Required)]  

    public partial class Service

    {

    }

}

 

3.配置WEB.CONFIG文件中<system.serviceModel>节
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"></serviceHostingEnvironment>

<!--WCF Siverlight 配置-->

<system.serviceModel>

    

    <behaviors>

        <serviceBehaviors>

            <behavior name=".Service.ServiceBehavior">

                <serviceMetadata httpGetEnabled="true" />

                <serviceDebug includeExceptionDetailInFaults="false" />

            </behavior>

        </serviceBehaviors>

    </behaviors>

    <bindings>

        <customBinding>

            <binding name="customBinding0">

                <binaryMessageEncoding />

                <httpTransport>

                    <extendedProtectionPolicy policyEnforcement="Never" />

                </httpTransport>

            </binding>

        </customBinding>

    </bindings>

    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" /> <!--这里配置-->

    <services>

        <service behaviorConfiguration=".Service.ServiceBehavior" name=".Service.Service">

            <endpoint address="" binding="customBinding" bindingConfiguration="customBinding0" contract=".Service.Service" />

            <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />

        </service>

    </services>

</system.serviceModel>

 

 

 

网络资源:

WCF状态保存分为两步:

(1) 使用SessionMode 来使Session有效化

  1. [ServiceContract(SessionMode
    SessionMode=SessionMode.Required)]  
  2. public interface ICalculator  
  3. {  
  4. [OperationContract(IsOneWay=true)]  
  5. void Adds(double x);  
  6. [OperationContract]  
  7. double GetResult();  
  8. }

(2)ServiceBehavior 里面利用参数InstanceContextMode设定到底使用哪一种Session方式

  1. [ServiceBehavior(InstanceContextMode
    InstanceContextMode=InstanceContextMode.PerCall)]  
  2. public class CalculatorService:ICalculator  
  3. {  }

WCF状态保存SessionMode 有三种值:
(1)Allowed 默认选值,允许但不强制使用Session
(2)Required 强制使用Session
(3)NotAllowed 不允许使用Session

WCF状态保存InstanceContextMode 有三种值:
(1) Percall 为user的每一次调用生成一个SessionID
生命周期:调用开始 ---->调用结束,这种情况和不使用Session是一样的
(2) PerSession 为每个用户生成一个SessionID
生命周期:客户端代理生成--->客户端代理关闭 和最原先的Session是一样的
(3) Seigle 生成唯一的SessionID,所有的用户共享 从host创建---->host 关闭,和Application 一样

 

 

在Silverlight中使用SESSION

首先Session是运行在服务器上的,而Silverlight运行在客户端。因此在Silverlight中使用SESSION的说法并不准确,

只因大家经常这样搜索才起这个名字。

有两种方法实现Silverlight与Session的关联:

方法一、通过WCF使用ASP.NET中的Session[因BasicHttpBinding不支持WCF中的Session,如使用WCF会话将报错 ]

  首先:在web.config中<system.serviceModel >下添加:

    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>

  然后:在服务类[不是接口]下添加如下属性:

    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]

  接下来就可以使用Session记得添加System.Web的引用

    HttpContext.Current.Session["YourName"] = something;

    object something = HttpContext.Current.Session["YourName"];

方法二、在客户端新建一个静态类模拟Session

  如要保存登陆信息,可在验证了用户名、密码之后在客户端保存相关信息。

using System;
using System.Collections.Generic;
namespace SessionDemo
{
public static class SessionManager
    {
private static Dictionary<string, object> session = new Dictionary<string, object>();
public static Dictionary<string, object> Session
        {
get { return SessionManager.session; }
set { SessionManager.session = value; }
        }
    }
}

使用方法:

赋值:
SessionManager.Session["uname"] = "kunal";
取值:
txbUname.Text = SessionManager.Session["uname"].ToString();

 

 

介绍

WCF(Windows Communication Foundation) - 会话状态:

    ServiceContract

    ·SessionMode.Allowed - 指定当传入绑定支持会话时,协定也支持会话(默认值)

    ·SessionMode.Required -  指定协定需要会话绑定。如果绑定并未配置为支持会话,则将引发异常

    ·SessionMode.NotAllowed - 指定协定永不支持启动会话的绑定

    OperationContract

    ·IsInitiating - 获取或设置一个值,该值指示方法是否实现可在服务器上启动会话(如果存在会话)的操作。

    ·IsTerminating - 获取或设置一个值,该值指示服务操作在发送答复消息(如果存在)后,是否会导致服务器关闭会话。





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.SessionManagement

{

    /**//// <summary>

    /// 演示会话状态的接口

    /// </summary>NotAllowed

    /// <remarks>

    /// SessionMode - 获取或设置是否允许、不允许或要求会话

    /// SessionMode.Allowed - 指定当传入绑定支持会话时,协定也支持会话(默认值)

    /// SessionMode.Required -  指定协定需要会话绑定。如果绑定并未配置为支持会话,则将引发异常

    /// SessionMode.NotAllowed - 指定协定永不支持启动会话的绑定

    /// </remarks>

    [ServiceContract(SessionMode = SessionMode.Required)]

    public interface IHello

    {

        /**//// <summary>

        /// 初始化Session

        /// </summary>

        /// <remarks>

        /// IsInitiating - 获取或设置一个值,该值指示方法是否实现可在服务器上启动会话(如果存在会话)的操作。

        /// IsTerminating - 获取或设置一个值,该值指示服务操作在发送答复消息(如果存在)后,是否会导致服务器关闭会话。

        /// </remarks>

        [OperationContract(IsInitiating = true, IsTerminating = false)]

        void StartSession();



        /**//// <summary>

        /// 结束Session

        /// </summary>

        [OperationContract(IsInitiating = false, IsTerminating = true)]

        void StopSession();



        /**//// <summary>

        /// 获取计数器结果

        /// </summary>

        /// <returns></returns>

        [OperationContract(IsInitiating = false, IsTerminating = false)]

        int Counter();



        /**//// <summary>

        /// 获取SessionId

        /// </summary>

        /// <returns></returns>

        [OperationContract(IsInitiating = false, IsTerminating = false)]

        string GetSessionId();

    }

}



Hello.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



using System.ServiceModel;



namespace WCF.ServiceLib.SessionManagement

{

    /**//// <summary>

    /// 演示会话状态的接口

    /// </summary>

    /// <remarks>

    /// InstanceContextMode - 获取或设置指示新服务对象何时创建的值。

    /// InstanceContextMode.PerSession - 为每个会话创建一个新的 System.ServiceModel.InstanceContext 对象。

    /// InstanceContextMode 的默认值为 InstanceContextMode.PerSession

    /// </remarks>

    [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)]

    public class Hello : IHello

    {

        private int _counter;



        /**//// <summary>

        /// 初始化Session

        /// </summary>

        public void StartSession()

        {

            _counter = 0;

        }



        /**//// <summary>

        /// 结束Session

        /// </summary>

        public void StopSession()

        {

            _counter = 0;

        }



        /**//// <summary>

        /// 获取计数器结果

        /// </summary>

        /// <returns></returns>

        public int Counter()

        {

            _counter++;



            return _counter;

        }



        /**//// <summary>

        /// 获取SessionId

        /// </summary>

        /// <returns></returns>

        public string GetSessionId()

        {

            return OperationContext.Current.SessionId;

        }

    }

}





2、宿主

Hello.svc

<%@ ServiceHost Language="C#" Debug="true" Service="WCF.ServiceLib.SessionManagement.Hello" %>

Web.config

<?xml version="1.0"?>

<configuration>

    <system.serviceModel>

        <behaviors>

            <serviceBehaviors>

                <behavior name="SessionManagementBehavior">

                    <!--httpGetEnabled - 使用get方式提供服务-->

                    <serviceMetadata httpGetEnabled="true" />

                    <serviceDebug includeExceptionDetailInFaults="true"/>

                </behavior>

            </serviceBehaviors>

        </behaviors>

        <services>

            <!--name - 提供服务的类名-->

            <!--behaviorConfiguration - 指定相关的行为配置-->

            <service name="WCF.ServiceLib.SessionManagement.Hello" behaviorConfiguration="SessionManagementBehavior">

                <!--address - 服务地址-->

                <!--binding - 通信方式-->

                <!--contract - 服务契约-->

                <!--bindingConfiguration - 指定相关的绑定配置-->

                <endpoint address="" binding="wsHttpBinding" contract="WCF.ServiceLib.SessionManagement.IHello" bindingConfiguration="SessionManagementBindingConfiguration"/>

            </service>

        </services>

        <bindings>

            <wsHttpBinding>

                <!--wsHttpBinding 可提供 安全会话 和 可靠会话-->

                <!--receiveTimeout - 在传输引发异常之前可用于完成读取操作的时间间隔(此处可认为是Session过期时间)-->

                <binding name="SessionManagementBindingConfiguration" receiveTimeout="00:00:10">

                    <!--指示是否在通道终结点之间建立 WS-RM (WS-ReliableMessaging) 可靠会话。默认值为 false。-->

                    <reliableSession enabled="true"/>

                    <security>

                        <!--此属性控制安全上下文令牌是否通过客户端与服务之间的 WS-SecureConversation 交换建立。将它设置为 true 要求远程方支持 WS-SecureConversation。-->

                        <message establishSecurityContext="true"/>

                    </security>

                </binding>

            </wsHttpBinding>

        </bindings>

    </system.serviceModel>

</configuration>





3、客户端

Hello.aspx

<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Hello.aspx.cs"

    Inherits="InstanceMode_Hello" Title="会话状态(Session)" %>



<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">

    <asp:Button ID="btnStartSession" runat="server" Text="StartSession" OnClick="btnStartSession_Click" />   <asp:Button ID="btnCounter" runat="server" Text="Counter" OnClick="btnCounter_Click" />   <asp:Button ID="btnGetSessionId" runat="server" Text="GetSessionId" OnClick="btnGetSessionId_Click" />   <asp:Button ID="btnStopSession" runat="server" Text="StopSession" OnClick="btnStopSession_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 InstanceMode_Hello : System.Web.UI.Page

{

    SessionManagemenSvc.HelloClient _proxy = null;



    protected void Page_Load(object sender, EventArgs e)

    {

        if (Session["proxy"] == null)

            Session["proxy"] = new SessionManagemenSvc.HelloClient();



        _proxy = Session["proxy"] as SessionManagemenSvc.HelloClient;

    }



    protected void btnStartSession_Click(object sender, EventArgs e)

    {

        _proxy.StartSession();

    }



    protected void btnCounter_Click(object sender, EventArgs e)

    {

        Page.ClientScript.RegisterStartupScript(

            this.GetType(),

            "js",

            string.Format("alert('计数器:{0}')", _proxy.Counter()),

            true);

    }



    protected void btnGetSessionId_Click(object sender, EventArgs e)

    {

        Page.ClientScript.RegisterStartupScript(

           this.GetType(),

           "js",

           string.Format("alert('SessionId:{0}')", _proxy.GetSessionId()),

           true);

    }



    protected void btnStopSession_Click(object sender, EventArgs e)

    {

        _proxy.StopSession();

    }

}



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-->

            <!--bindingConfiguration - 指定相关的绑定配置-->

            <endpoint address="http://localhost:3502/ServiceHost/SessionManagement/Hello.svc" binding="wsHttpBinding" contract="SessionManagemenSvc.IHello" bindingConfiguration="SessionManagementBindingConfiguration" />

        </client>

        <bindings>

            <wsHttpBinding>

                <binding name="SessionManagementBindingConfiguration">

                    <!--指示是否在通道终结点之间建立 WS-RM (WS-ReliableMessaging) 可靠会话。默认值为 false。-->

                    <reliableSession enabled="true"/>

                    <security>

                        <!--此属性控制安全上下文令牌是否通过客户端与服务之间的 WS-SecureConversation 交换建立。将它设置为 true 要求远程方支持 WS-SecureConversation。-->

                        <message establishSecurityContext="true"/>

                    </security>

                </binding>

            </wsHttpBinding>

        </bindings>

    </system.serviceModel>

</configuration>





运行结果:

单击"btnStartSession"按钮,初始化Session

单击"btnCounter"按钮,Session级别的计数器累加

单击"btnGetSessionId"按钮,获取当前Session的SessionId

单击"btnStopSession"按钮,终止Session



注:

Host中的wsHttpBinding配置的receiveTimeout属性为Session的过期时间 
以上内容出自网络,并非原创


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