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标签:.NET  来源:blog.csdn.net  作者:mySingle.cn  发布时间:2009-03-13  ★★★加入收藏〗〖手机版
跨站点共享Session解决方案、单点登录解决方案(.NET 2.0版本)
摘要:我们在进行Web开发时经常会用到Session,用它去标识不同的会话,那么涉及到跨站点的时候如何实现Session共享呢?…

3、创建一个序列化、反序列化操作的类:ShareSessionFormatter

代码如下:

using System;
using System.Web;
using System.Data;
using System.Collections.Generic;
using System.Text;
using System.Runtime.Serialization.Formatters.Soap;
using System.Runtime.Serialization.Formatters.Binary;
using System.Collections;
using System.IO;

namespace ShareSession
...{

/**//* *****************************
  *
  *  Author  :  Xiaojun Liu
  *  Create Date :  2007.11.09
  *  Description :
  *
  * *****************************
  */

/**//// <summary>
  /// 格式化操作器
  /// </summary>
  public class ShareSessionFormatter
  ...{

private static string _ShareSessionPath = System.Configuration.ConfigurationManager.AppSettings["ShareSessionPath"].ToString();
    
    /**//// <summary>
    /// 序列化格式器类型
    /// </summary>
    public enum FormatterType
    ...{
      Binary,
      Soap
    };

/**//// <summary>
    /// 执行序列化
    /// </summary>
    /// <param name="formatterType">类型</param>
    public static void Serialize(FormatterType formatterType)
    ...{
      if (HttpContext.Current.Session["AUTH_GUID"] == null)
      ...{
        HttpContext.Current.Session["AUTH_GUID"] = Guid.NewGuid().ToString();
      }
      Hashtable ht = new Hashtable();

//遍历Session     
      foreach (string key in HttpContext.Current.Session.Contents.Keys)
      ...{
        ht.Add(key, HttpContext.Current.Session[key]);
      }      

/**/////执行序列化
      switch (formatterType)
      ...{
        case FormatterType.Binary:
          BinarySerialize(ht);
          break;
        case FormatterType.Soap:
          SoapSerialize(ht);
          break;
        default:
          break;
      }

}

/**//// <summary>
    /// 按照Binary格式序列化
    /// </summary>
    /// <param name="ht"></param>
    private static void BinarySerialize(Hashtable ht)
    ...{
      string guid = HttpContext.Current.Session["AUTH_GUID"].ToString();
      SessionEntity obj = new SessionEntity(guid);
      obj.HtShareSession = ht;
     
      // 创建一个文件guid.xml
      Stream stream = File.Open(_ShareSessionPath + guid + ".xml", FileMode.Create);
      BinaryFormatter formatter = new BinaryFormatter();

//执行序列化
      formatter.Serialize(stream, obj);
      stream.Close();

// 将对象置空
      obj = null;
    }

/**//// <summary>
    /// 按照Soap格式序列化
    /// </summary>
    /// <param name="ht"></param>
    private static void SoapSerialize(Hashtable ht)
    ...{
      string guid = HttpContext.Current.Session["AUTH_GUID"].ToString();
      SessionEntity obj = new SessionEntity(guid);
      obj.HtShareSession = ht;

// 创建一个文件guid.xml
      Stream stream = File.Open(_ShareSessionPath + guid + ".xml", FileMode.Create);
      SoapFormatter formatter = new SoapFormatter();

//执行序列化
      formatter.Serialize(stream, obj);
      stream.Close();

// 将对象置空
      obj = null;
    }

/**//// <summary>
    /// 反序列化
    /// </summary>
    /// <param name="formatterType">传送端的Session["AUTH_GUID"]</param>
    /// <param name="guid"></param>
    public static void Deserialize(FormatterType formatterType, string guid)
    ...{
      switch (formatterType)
      ...{
        case FormatterType.Binary:
          BinaryDeserialize(guid);
          break;
        case FormatterType.Soap:
          SoapDeserialize(guid);
          break;
        default:
          break;
      }
    }

/**//// <summary>
    /// 以Binary方式反序列化
    /// </summary>
    private static void BinaryDeserialize(string guid)
    ...{
      SessionEntity obj = new SessionEntity(guid);

// 打开文件guid.xml
      Stream stream = File.Open(_ShareSessionPath + guid + ".xml", FileMode.Open);
      BinaryFormatter formatter = new BinaryFormatter();

obj = (SessionEntity)formatter.Deserialize(stream);
      stream.Close();

Hashtable ht = obj.HtShareSession;
      obj = null;

//遍历ht,生成Session
      CreateSession(ht);
    }

/**//// <summary>
    /// 以Soap方式反序列化
    /// </summary>
    private static void SoapDeserialize(string guid)
    ...{
      SessionEntity obj = new SessionEntity(guid);

// 打开文件guid.xml
      Stream stream = File.Open(_ShareSessionPath + guid + ".xml", FileMode.Open);
      SoapFormatter formatter = new SoapFormatter();

obj = (SessionEntity)formatter.Deserialize(stream);
      stream.Close();

Hashtable ht = obj.HtShareSession;
      obj = null;

//遍历ht,生成Session
      CreateSession(ht);
    }

/**//// <summary>
    /// 遍历Hashtable,同时创建Session
    /// </summary>
    /// <param name="ht"></param>
    private static void CreateSession(Hashtable ht)
    ...{
      foreach (DictionaryEntry de in ht)
      ...{
        HttpContext.Current.Session[de.Key.ToString()] = de.Value;
      }
    }
  }//
}//

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