寫該權限類主要目地
為了讓權限配置更加的靈活，可以根據SQL、json、或者XML的方式來動態進行頁面的訪問控制，以及沒有權限的相關跳轉。
使用步驟
1、要建一個全局過濾器
//受權過濾器
public class AuthorizeFilter : AuthorizeAttribute
{
public override void OnAuthorization(AuthorizationContext filterContext)
{
}
}
2、Gobal里注冊 GlobalFilters.Filters.Add(new AuthorizeFilter());該過該全局過濾器
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
GlobalConfiguration.Configure(WebApiConfig.Register);
GlobalFilters.Filters.Add(new AuthorizeFilter());
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
3、在過濾器中調用 SystemAuthorizeService.Start實現
（1）使用對象進行權限驗證
public override void OnAuthorization(AuthorizationContext filterContext)
{
List<SystemAuthorizeModel> smList = new List<SystemAuthorizeModel>()
{
//用戶1,2,3可以訪問 area為admin 所有權限
new SystemAuthorizeModel() { SystemAuthorizeType= SystemAuthorizeType.Area, AreaName="admin" , UserKeyArray=new dynamic[] { 1,2,3 /*用戶授權數組*/} },
//用戶8,7可以訪問 area為admin 控制器為:center 所有權限
new SystemAuthorizeModel() { SystemAuthorizeType= SystemAuthorizeType.Controller, AreaName="admin" , ControllerName="center", UserKeyArray=new dynamic[] { 8,7 /*用戶授權數組*/} },
//用戶1可以訪問為 area為:null 控制器為:home 操作為:about 的請求
new SystemAuthorizeModel() { SystemAuthorizeType= SystemAuthorizeType.Action, ControllerName="home" , ActionName="about" , UserKeyArray=new dynamic[] { 1 } },
//給用戶100和110所有頁面權限
new SystemAuthorizeModel() { SystemAuthorizeType= SystemAuthorizeType.All, UserKeyArray=new dynamic[] { 100,110 } }
};
SystemAuthorizeErrorRedirect sr = new SystemAuthorizeErrorRedirect();
sr.DefaultUrl = "/user/login";//沒有權限都跳轉到DefaultUrl
//sr.ItemList=xx 設置更詳細的跳轉
SystemAuthorizeService.Start(filterContext, smList, sr, () =>
{
//獲取用戶ID
return 1; //用戶ID為1，作為DEMO寫死 ，當然了可以是SESSION也可以是COOKIES等 這兒就不解釋了
});
}
(2)使用JSON轉成對象進行驗證
[
{
"SystemAuthorizeType": 1,
"AreaName": "admin",
"ControllerName": "center",
"ActionName": null,
"UserKeyArray": [
1,
2,
3
]
},
{
"SystemAuthorizeType": 1,
"AreaName": "admin",
"ControllerName": "center",
"ActionName": null,
"UserKeyArray": [
8,
7
]
},
{
"SystemAuthorizeType": 3,
"AreaName": null,
"ControllerName": "home",
"ActionName": "about",
"UserKeyArray": [
1
]
},
{
"SystemAuthorizeType": 0,
"AreaName": null,
"ControllerName": null,
"ActionName": null,
"UserKeyArray": [
100,
110
]
}
]
SystemAuthorizeService代碼：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
namespace Idea.Models.Filters
{
/// <summary>
/// 系統授權服務
/// 作者:sunkaixuan
/// 時間:2015-10-25
/// </summary>
public class SystemAuthorizeService
{
/// <summary>
/// 啟動系統授權
/// </summary>
/// <param name="filterContext"></param>
/// <param name="SystemAuthorizeList">所有驗證項</param>
/// <param name="errorRediect">沒有權限跳轉地址</param>
/// <param name="GetCurrentUserId">獲取當前用戶ID</param>
public static void Start(AuthorizationContext filterContext, List<SystemAuthorizeModel> systemAuthorizeList, SystemAuthorizeErrorRedirect errorRediect, Func<object> GetCurrentUserKey)
{
if (errorRediect == null)
{
throw new ArgumentNullException("SystemAuthorizeService.Start.errorRediect");
}
if (systemAuthorizeList == null)
{
throw new ArgumentNullException("SystemAuthorizeService.Start.systemAuthorizeList");
}
//全部小寫
foreach (var it in systemAuthorizeList)
{
it.ControllerName = it.ControllerName.ToLower();
it.ActionName = it.ActionName.ToLower();
it.AreaName = it.AreaName.ToLower();
}
//聲名變量
var context = filterContext.HttpContext;
var request = context.Request;
var response = context.Response;
string actionName = filterContext.ActionDescriptor.ActionName.ToLower();
string controllerName = filterContext.ActionDescriptor.ControllerDescriptor.ControllerName.ToLower();
string areaName = null;
bool isArea = filterContext.RouteData.DataTokens["area"] != null;
//變量賦值
if (isArea)
areaName = filterContext.RouteData.DataTokens["area"].ToString().ToLower();
//函數方法
#region 函數方法
Action<string, string, string> Redirect = (action, controller, area) =>
{
filterContext.Result = new RedirectToRouteResult(new RouteValueDictionary(new { controller = controller, action = action, area = area }));
};
Action<string> RedirectUrl = url =>
{
filterContext.Result = new RedirectResult(url);
};
#endregion
Func<SystemAuthorizeErrorRedirectItemList, bool> redirectActionExpression = it => it.SystemAuthorizeType == SystemAuthorizeType.Action && it.Area == areaName && it.Controller == controllerName && it.Action == actionName;
Func<SystemAuthorizeErrorRedirectItemList, bool> redirectControllerExpression = it => it.SystemAuthorizeType == SystemAuthorizeType.Action && it.Area == areaName && it.Controller == controllerName;
Func<SystemAuthorizeErrorRedirectItemList, bool> redirectAreaExpression = it => it.SystemAuthorizeType == SystemAuthorizeType.Action && it.Area == areaName;
Func<SystemAuthorizeModel, bool> actionExpression = it => it.SystemAuthorizeType == SystemAuthorizeType.Action && it.AreaName == areaName && it.ControllerName == controllerName && it.ActionName == actionName;
Func<SystemAuthorizeModel, bool> controllerExpression = it => it.SystemAuthorizeType == SystemAuthorizeType.Controller && it.AreaName == areaName && it.ControllerName == controllerName;
Func<SystemAuthorizeModel, bool> areaExpression = it => it.SystemAuthorizeType == SystemAuthorizeType.Area && it.AreaName == areaName;
dynamic userId = GetCurrentUserKey();
//所有權限
bool isAllByUuserKey = IsAllByUserKey(systemAuthorizeList, userId);
bool isAreaByUserKey = IsAreaByUserKey(systemAuthorizeList, areaName, userId);
bool isControllerByUserKey = IsControllerByUserKey(systemAuthorizeList, areaName, controllerName, userId);
bool isActionByUserKey = IsActionByUserKey(systemAuthorizeList, areaName, controllerName, actionName, userId);
//有權限
var hasPower = (isAllByUuserKey || isActionByUserKey || isControllerByUserKey || isAreaByUserKey);
//需要驗證
var mustValidate = systemAuthorizeList.Any(actionExpression) || systemAuthorizeList.Any(controllerExpression) || systemAuthorizeList.Any(areaExpression);
if (!hasPower && mustValidate)
{
ErrorRediect(errorRediect, RedirectUrl, redirectActionExpression, redirectControllerExpression, redirectAreaExpression);
}
}
private static void ErrorRediect(SystemAuthorizeErrorRedirect errorRediect, Action<string> RedirectUrl, Func<SystemAuthorizeErrorRedirectItemList, bool> actionExpression, Func<SystemAuthorizeErrorRedirectItemList, bool> controllerExpression, Func<SystemAuthorizeErrorRedirectItemList, bool> areaExpression)
{
if (errorRediect.ItemList == null)
{//返回默認錯誤地址
RedirectUrl(errorRediect.DefaultUrl);
}
else if (errorRediect.ItemList.Any(actionExpression))
{
var red = errorRediect.ItemList.Single(actionExpression);
RedirectUrl(red.ErrorUrl);
}
else if (errorRediect.ItemList.Any(controllerExpression))
{
var red = errorRediect.ItemList.Single(controllerExpression);
RedirectUrl(red.ErrorUrl);
}
else if (errorRediect.ItemList.Any(areaExpression))
{
var red = errorRediect.ItemList.Single(areaExpression);
RedirectUrl(red.ErrorUrl);
}
else if (errorRediect.ItemList.Any(it => it.SystemAuthorizeType == SystemAuthorizeType.All))
{
var red = errorRediect.ItemList.Single(it => it.SystemAuthorizeType == SystemAuthorizeType.All);
RedirectUrl(red.ErrorUrl);
}
else
{
RedirectUrl(errorRediect.DefaultUrl);
}
}
private static bool IsAllByUserKey(List<SystemAuthorizeModel> systemAuthorizeList, object userKey)
{
var hasAll = systemAuthorizeList.Any(it => it.SystemAuthorizeType == SystemAuthorizeType.All);
if (hasAll)
{
if (systemAuthorizeList.Any(it => it.UserKeyArray != null && it.UserKeyArray.Contains(userKey)))
{
return true;
}
}
return false;
}
private static bool IsAreaByUserKey(List<SystemAuthorizeModel> systemAuthorizeList, string area, object userKey)
{
if (systemAuthorizeList.Any(it => it.AreaName == area && it.SystemAuthorizeType == SystemAuthorizeType.Area)) //是否存在驗證級別為Area的驗證
{
var isContains = systemAuthorizeList.Any(it => it.AreaName == area && it.SystemAuthorizeType == SystemAuthorizeType.Area && it.UserKeyArray.Contains(userKey));
return isContains;
}
return false;
}
private static bool IsControllerByUserKey(List<SystemAuthorizeModel> systemAuthorizeList, string area, string controller, object userKey)
{
if (systemAuthorizeList.Any(it => it.AreaName == area && it.ControllerName == controller && it.SystemAuthorizeType == SystemAuthorizeType.Controller)) //是否存在驗證級別為Controller的驗證
{
var isContains = systemAuthorizeList.Any(it => it.AreaName == area && it.ControllerName == controller && it.SystemAuthorizeType == SystemAuthorizeType.Controller && it.UserKeyArray.Contains(userKey));
return isContains;
}
return false;
}
private static bool IsActionByUserKey(List<SystemAuthorizeModel> systemAuthorizeList, string area, string controller, string action, dynamic userKey)
{
if (systemAuthorizeList.Any(it => it.AreaName == area && it.ControllerName == controller && it.ActionName == action && it.SystemAuthorizeType == SystemAuthorizeType.Action)) //是否存在驗證級別為action的驗證
{
return systemAuthorizeList.Any(it => it.AreaName == area && it.ControllerName == controller && it.ActionName == action && it.SystemAuthorizeType == SystemAuthorizeType.Action && it.UserKeyArray.ToString().Contains(userKey.ToString()));
}
return false;
}
}
/// <summary>
/// 用戶訪問需要授權的項
/// </summary>
public class SystemAuthorizeModel
{
/// <summary>
/// 驗證類型
/// </summary>
public SystemAuthorizeType SystemAuthorizeType { get; set; }
/// <summary>
/// 用戶擁有權限訪問的Area
/// </summary>
public string AreaName { get; set; }
/// <summary>
/// 用戶擁有權限訪問的Controller
/// </summary>
public string ControllerName { get; set; }
/// <summary>
/// 用戶擁有權限訪問的Actioin
/// </summary>
public string ActionName { get; set; }
/// <summary>
/// 用戶ID
/// </summary>
public dynamic[] UserKeyArray { get; set; }
}
/// <summary>
/// 如果沒有權限返回地址
/// </summary>
public class SystemAuthorizeErrorRedirect
{
/// <summary>
/// 默認值
/// </summary>
public string DefaultUrl { get; set; }
public List<SystemAuthorizeErrorRedirectItemList> ItemList { get; set; }
}
public class SystemAuthorizeErrorRedirectItemList
{
/// <summary>
/// 驗證類型
/// </summary>
public SystemAuthorizeType SystemAuthorizeType { get; set; }
public string Controller { get; set; }
public string Action { get; set; }
public string Area { get; set; }
public string ErrorUrl { get; set; }
}
/// <summary>
/// 驗證類型
/// </summary>
public enum SystemAuthorizeType
{
/// <summary>
/// 所有權限
/// </summary>
All = 0,
/// <summary>
///驗證Area
/// </summary>
Area = 1,
/// <summary>
/// 驗證Area和Controller
/// </summary>
Controller = 2,
/// <summary>
/// 驗證Area和Controller和Action
/// </summary>
Action = 3,
/// <summary>
/// 沒有權限
/// </summary>
No = 4
}
}