asp.net mvc4 中自动生成的权限管理表的说明

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原文 出处http://blog.csdn.net/hj458377603/article/details/9451603

1.asp.net mvc自带的权限表的创建是在InitializeSimpleMembershipAttribute.cs中实现的。

2.InitializeSimpleMembershipAttribute.cs

 using System;
 using System.Data.Entity;
 using System.Data.Entity.Infrastructure;
 using System.Threading;
 using System.Web.Mvc;
 using WebMatrix.WebData;
 using FindU1.Models;

 namespace FindU1.Filters
 {
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
     public sealed class InitializeSimpleMembershipAttribute : ActionFilterAttribute
     {
         private static SimpleMembershipInitializer _initializer;
         private static object _initializerLock = new object();
         private static bool _isInitialized;

         public override void OnActionExecuting(ActionExecutingContext filterContext)
         {
             // Ensure ASP.NET Simple Membership is initialized only once per app start
             LazyInitializer.EnsureInitialized(ref _initializer, ref _isInitialized, ref _initializerLock);
         }

         private class SimpleMembershipInitializer
         {
             public SimpleMembershipInitializer()
             {
                 Database.SetInitializer(null);

                 try
                 {
                     using (var context = new UserContext())
                     {
                         if (!context.Database.Exists())
                         {
                             // Create the SimpleMembership database without Entity Framework migration schema
                             ((IObjectContextAdapter)context).ObjectContext.CreateDatabase();
                         }
                     }
                     //Web.config中的配置，前四个参数分别是数据库连接ConnectionString,表名称，UserId,UserName（对应的数据库中的字段）
                     WebSecurity.InitializeDatabaseConnection("UserContext", "Users", "UserID", "Email", autoCreateTables: true);
                 }
                 catch (Exception ex)
                 {
                     throw new InvalidOperationException("The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588", ex);
                 }
             }
         }
     }
 }

3.Web.Config中的数据库的配置

 <connectionStrings>
     <add name="DefaultConnection" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-FindU1-20130720205848;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnet-FindU1-20130720205848.mdf"
       providerName="System.Data.SqlClient" />
     <add name="UserContext" connectionString="Data Source=(localdb)\v11.0; Initial Catalog=UserContext-20130721150726; Integrated Security=True; MultipleActiveResultSets=True; AttachDbFilename=|DataDirectory|UserContext-20130721150726.mdf"
       providerName="System.Data.SqlClient" />
   connectionStrings>

4.出现 未启用角色管理器功能。错误

此时需要修改配置文件，加上

 <compilation debug="true" targetFramework="4.5">
       <assemblies>
         <add assembly="WebMatrix.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="WebMatrix.WebData, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
       assemblies>
 compilation>