检查用户是否有访问权限

如何实现用户是否有访问页面的权限，我们可以在asp.net的Page_Load中，取得当前网页名称与当前用户，来检查到用户是否有对此页访问权。

可以通过检索[UsersRole]表和[UsersModule]表，是否有相关记录，如果有即有访问权限，反之，即是拒绝访问。

存储过程： 

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[usp_CheckAuthorizationForAccessPages]
(
    @UsersId int,
    @PagesId int
)
AS
DECLARE @UsersRoleCount int,@UsersModuleCount int, @Result bit
--检索用户所属角色
SELECT @UsersRoleCount =(SELECT COUNT(*) FROM [UsersRole] UR INNER JOIN [RolePages] RP ON UR.[RoleId] = RP.[RoleId] WHERE UR.[IsEnable] = 1 AND RP.[IsEnable] = 1 AND UR.[UsersId] = @UsersId AND RP.[PagesId] = @PagesId )
--检索用户拥有访问的模块
SELECT @UsersModuleCount =(SELECT COUNT(*) FROM [UsersModule] UM INNER JOIN [ModulePages] MP ON UM.[ModuleId] = MP.[ModuleId] WHERE UM.[Purview] > 0 AND MP.[IsEnable] = 1 AND UM.[UsersId] = @UsersId AND MP.[PagesId] = @PagesId )

    IF (@UsersRoleCount > 0 OR @UsersModuleCount > 0)
        --拥有访问权
        SET @Result = 1   
    ELSE
        --访问拒绝
        SET @Result = 0  
    RETURN @Result