Basepage类+Session通用用户登录权限控制

 1 using System.Web;
 2 
 3  public class SessionManager<T>
 4 {
 5     public static T GetSessionObject(string key)
 6     {
 7         object obj = HttpContext.Current.Session[key];
 8         if (obj == null)
 9             return default(T);
10         else
11             return (T)obj;
12     }
13 
14     public static void SetSessionObject(string key, T obj)
15     {
16         HttpContext.Current.Session[key] = obj;
17     }
18 }
19  

 1 using Models;
 2 
 3  public class SessionKey
 4 {
 5     public const string UserInfo = "usrelogin";
 6 }
 7 
 8  public class SessionDate
 9 {
10     /// <summary>
11     /// 获取session中的用户信息
12     /// </summary>
13     /// <returns></returns>
14     public static UserLogin GetUserInfo()
15     {
16         UserLogin userInfo = SessionManager<UserLogin>.GetSessionObject(SessionKey.UserInfo);
17         if (userInfo == null)
18         {
19             userInfo = new UserLogin();
20             //把内容储存到应用程序                
21             SessionManager<UserLogin>.SetSessionObject(SessionKey.UserInfo, userInfo);
22         }
23         return userInfo;
24     }
25     /// <summary>
26     /// 重新设置session中的用户信息
27     /// </summary>
28     /// <param name="userInfo"></param>
29     public static void SetUserInfo(UserLogin userInfo)
30     {
31         SessionManager<UserLogin>.SetSessionObject(SessionKey.UserInfo, userInfo);
32     }
33 
34     /// <summary>
35     /// 清除session中用户信息
36     /// </summary>
37     public static void ClearUserInfo()
38     {
39         SessionManager<UserLogin>.SetSessionObject(SessionKey.UserInfo, null);
40     }
41 
42     /// <summary>
43     /// 是否登录
44     /// </summary>
45     /// <returns></returns>
46     public static bool IsLogin()
47     {
48         bool ret = false;
49         UserLogin userInfo = SessionManager<UserLogin>.GetSessionObject(SessionKey.UserInfo);
50         if (userInfo != null)
51             ret = true;
52         return ret;
53     }
54 }

 1 using System;
 2 using System.Web.UI;
 3 
 4 public class BasePage:Page
 5 {
 6     protected void Page_Unload(object sender, EventArgs e)
 7     {
 8 
 9     }
10 
11     protected override void OnPreInit(EventArgs e)
12     {
13         base.OnPreInit(e);
14         if (!SessionData.IsLogin())
15         {
16             Response.Redirect("~/Web/Default.aspx");
17         }
18     }
19 }