WCF 中 使用 Session
1.标記WCF服務開啟Session模式,使用SessionMode 來使Session有效化
[ServiceContract(SessionMode = SessionMode.Required)]
2.服務類添加ASPNETSESSION相容标記
[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檔案中<system.serviceModel>節
<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" /> <!--這裡配置-->
<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>
網絡資源:
WCF狀态儲存分為兩步:
(1) 使用SessionMode 來使Session有效化
-
[ServiceContract(SessionMode
SessionMode=SessionMode.Required)]
- public interface ICalculator
- {
- [OperationContract(IsOneWay=true)]
- void Adds(double x);
- [OperationContract]
- double GetResult();
- }
(2)ServiceBehavior 裡面利用參數InstanceContextMode設定到底使用哪一種Session方式
-
[ServiceBehavior(InstanceContextMode
InstanceContextMode=InstanceContextMode.PerCall)]
- public class CalculatorService:ICalculator
- { }
WCF狀态儲存SessionMode 有三種值:
(1)Allowed 預設選值,允許但不強制使用Session
(2)Required 強制使用Session
(3)NotAllowed 不允許使用Session
WCF狀态儲存InstanceContextMode 有三種值:
(1) Percall 為user的每一次調用生成一個SessionID
生命周期:調用開始 ---->調用結束,這種情況和不使用Session是一樣的
(2) PerSession 為每個使用者生成一個SessionID
生命周期:用戶端代理生成--->用戶端代理關閉 和最原先的Session是一樣的
(3) Seigle 生成唯一的SessionID,所有的使用者共享 從host建立---->host 關閉,和Application 一樣
在Silverlight中使用SESSION
首先Session是運作在伺服器上的,而Silverlight運作在用戶端。是以在Silverlight中使用SESSION的說法并不準确,
隻因大家經常這樣搜尋才起這個名字。
有兩種方法實作Silverlight與Session的關聯:
方法一、通過WCF使用ASP.NET中的Session[因BasicHttpBinding不支援WCF中的Session,如使用WCF會話将報錯 ]
首先:在web.config中<system.serviceModel >下添加:
<serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
然後:在服務類[不是接口]下添加如下屬性:
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
接下來就可以使用Session記得添加System.Web的引用
HttpContext.Current.Session["YourName"] = something;
object something = HttpContext.Current.Session["YourName"];
方法二、在用戶端建立一個靜态類模拟Session
如要儲存登陸資訊,可在驗證了使用者名、密碼之後在用戶端儲存相關資訊。
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:
指派:
SessionManager.Session["uname"] = "kunal";
取值:
txbUname.Text = SessionManager.Session["uname"].ToString();
介紹
WCF(Windows Communication Foundation) - 會話狀态:
ServiceContract
·SessionMode.Allowed - 指定當傳入綁定支援會話時,協定也支援會話(預設值)
·SessionMode.Required - 指定協定需要會話綁定。如果綁定并未配置為支援會話,則将引發異常
·SessionMode.NotAllowed - 指定協定永不支援啟動會話的綁定
OperationContract
·IsInitiating - 擷取或設定一個值,該值訓示方法是否實作可在伺服器上啟動會話(如果存在會話)的操作。
·IsTerminating - 擷取或設定一個值,該值訓示服務操作在發送答複消息(如果存在)後,是否會導緻伺服器關閉會話。
示例
1、服務
IHello.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
namespace WCF.ServiceLib.SessionManagement
{
/** <summary>
/// 示範會話狀态的接口
/// </summary>NotAllowed
/// <remarks>
/// SessionMode - 擷取或設定是否允許、不允許或要求會話
/// SessionMode.Allowed - 指定當傳入綁定支援會話時,協定也支援會話(預設值)
/// SessionMode.Required - 指定協定需要會話綁定。如果綁定并未配置為支援會話,則将引發異常
/// SessionMode.NotAllowed - 指定協定永不支援啟動會話的綁定
/// </remarks>
[ServiceContract(SessionMode = SessionMode.Required)]
public interface IHello
{
/** <summary>
/// 初始化Session
/// </summary>
/// <remarks>
/// IsInitiating - 擷取或設定一個值,該值訓示方法是否實作可在伺服器上啟動會話(如果存在會話)的操作。
/// IsTerminating - 擷取或設定一個值,該值訓示服務操作在發送答複消息(如果存在)後,是否會導緻伺服器關閉會話。
/// </remarks>
[OperationContract(IsInitiating = true, IsTerminating = false)]
void StartSession();
/** <summary>
/// 結束Session
/// </summary>
[OperationContract(IsInitiating = false, IsTerminating = true)]
void StopSession();
/** <summary>
/// 擷取計數器結果
/// </summary>
/// <returns></returns>
[OperationContract(IsInitiating = false, IsTerminating = false)]
int Counter();
/** <summary>
/// 擷取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>
/// 示範會話狀态的接口
/// </summary>
/// <remarks>
/// InstanceContextMode - 擷取或設定訓示新服務對象何時建立的值。
/// InstanceContextMode.PerSession - 為每個會話建立一個新的 System.ServiceModel.InstanceContext 對象。
/// InstanceContextMode 的預設值為 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>
/// 結束Session
/// </summary>
public void StopSession()
{
_counter = 0;
}
/** <summary>
/// 擷取計數器結果
/// </summary>
/// <returns></returns>
public int Counter()
{
_counter++;
return _counter;
}
/** <summary>
/// 擷取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方式提供服務-->
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<!--name - 提供服務的類名-->
<!--behaviorConfiguration - 指定相關的行為配置-->
<service name="WCF.ServiceLib.SessionManagement.Hello" behaviorConfiguration="SessionManagementBehavior">
<!--address - 服務位址-->
<!--binding - 通信方式-->
<!--contract - 服務契約-->
<!--bindingConfiguration - 指定相關的綁定配置-->
<endpoint address="" binding="wsHttpBinding" contract="WCF.ServiceLib.SessionManagement.IHello" bindingConfiguration="SessionManagementBindingConfiguration"/>
</service>
</services>
<bindings>
<wsHttpBinding>
<!--wsHttpBinding 可提供 安全會話 和 可靠會話-->
<!--receiveTimeout - 在傳輸引發異常之前可用于完成讀取操作的時間間隔(此處可認為是Session過期時間)-->
<binding name="SessionManagementBindingConfiguration" receiveTimeout="00:00:10">
<!--訓示是否在通道終結點之間建立 WS-RM (WS-ReliableMessaging) 可靠會話。預設值為 false。-->
<reliableSession enabled="true"/>
<security>
<!--此屬性控制安全上下文令牌是否通過用戶端與服務之間的 WS-SecureConversation 交換建立。将它設定為 true 要求遠端方支援 WS-SecureConversation。-->
<message establishSecurityContext="true"/>
</security>
</binding>
</wsHttpBinding>
</bindings>
</system.serviceModel>
</configuration>
3、用戶端
Hello.aspx
<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Hello.aspx.cs"
Inherits="InstanceMode_Hello" Title="會話狀态(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('計數器:{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 - 服務位址-->
<!--binding - 通信方式-->
<!--contract - 服務契約-->
<!--bindingConfiguration - 指定相關的綁定配置-->
<endpoint address="http://localhost:3502/ServiceHost/SessionManagement/Hello.svc" binding="wsHttpBinding" contract="SessionManagemenSvc.IHello" bindingConfiguration="SessionManagementBindingConfiguration" />
</client>
<bindings>
<wsHttpBinding>
<binding name="SessionManagementBindingConfiguration">
<!--訓示是否在通道終結點之間建立 WS-RM (WS-ReliableMessaging) 可靠會話。預設值為 false。-->
<reliableSession enabled="true"/>
<security>
<!--此屬性控制安全上下文令牌是否通過用戶端與服務之間的 WS-SecureConversation 交換建立。将它設定為 true 要求遠端方支援 WS-SecureConversation。-->
<message establishSecurityContext="true"/>
</security>
</binding>
</wsHttpBinding>
</bindings>
</system.serviceModel>
</configuration>
運作結果:
單擊"btnStartSession"按鈕,初始化Session
單擊"btnCounter"按鈕,Session級别的計數器累加
單擊"btnGetSessionId"按鈕,擷取目前Session的SessionId
單擊"btnStopSession"按鈕,終止Session
注:
Host中的wsHttpBinding配置的receiveTimeout屬性為Session的過期時間
以上内容出自網絡,并非原創