MVC5 Attribute（特性）

namespace MyWebApi.Models{ ???using System; ???using System.Web; ???using System.Web.Mvc; ???/// <summary> ???/// 检查登陆已经权限问题 ???/// </summary> ???public class MyAuthorizeAttribute : AuthorizeAttribute ???{ ???????public int status = 1;//1：登陆有权，2:没有登入，3：登陆无权限 ???????/// <summary> ???????/// 权限检查的入口 ???????/// </summary> ???????/// <param name="httpContext">http的基类</param> ???????/// <returns></returns> ???????protected override bool AuthorizeCore(HttpContextBase httpContext) ???????{ ???????????//这里写逻辑 ?利用Cookies 判断用户是否登入已经登入是否有权限，然后来给 status 赋值 ???????????#region ?我们也可以在使用的时候传入指定的用户以及角色来判断 ???????????string[] users = Users.Split(‘,‘); ???????????string[] roles = Roles.Split(‘,‘); ???????????#endregion ???????????return status ==1; ???????} ???????/// <summary> ???????/// 当检查入口返回false会进入到这里 ???????/// </summary> ???????/// <param name="filterContext"></param> ???????protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext) ???????{ ???????????if (filterContext == null) ???????????{ ???????????????throw new ArgumentNullException("filterContext"); ???????????} ???????????else ???????????{ ???????????????if (status == 2) //没有登陆的页面 ???????????????{ ???????????????????filterContext.Result = new RedirectResult(""); ????????????????} ???????????????else if (status == 3) //没有权限访问的页面 ???????????????{ ???????????????????filterContext.Result = new RedirectResult(""); ???????????????} ???????????} ???????} ???}}

namespace MyWebApi.Models{ ???using System.Web.Mvc; ???/// <summary> ???/// 方法的过滤 ???/// </summary> ???public class MyFilterAttribute:ActionFilterAttribute ???{ ???????/// <summary> ???????/// 在方法执行之前 ???????/// </summary> ???????/// <param name="filterContext"></param> ???????public override void OnActionExecuting(ActionExecutingContext filterContext) ???????{ ???????????//逻辑操作 ???????????filterContext.Result = new RedirectResult("");//跳转页面 ???????} ???????/// <summary> ???????/// 在方法之后返回之前 ???????/// </summary> ???????/// <param name="filterContext"></param> ???????public override void OnActionExecuted(ActionExecutedContext filterContext) ???????{ ???????????//逻辑操作 ???????????filterContext.Result = new RedirectResult("");//跳转页面 ???????} ???????/// <summary> ???????/// 在返回之前 ???????/// </summary> ???????/// <param name="filterContext"></param> ???????public override void OnResultExecuting(ResultExecutingContext filterContext) ???????{ ???????????//逻辑操作 ???????????filterContext.Result = new RedirectResult("");//跳转页面 ???????} ???????/// <summary> ???????/// 在返回之后 ???????/// </summary> ???????/// <param name="filterContext"></param> ???????public override void OnResultExecuted(ResultExecutedContext filterContext) ???????{ ???????????//逻辑操作 ???????????filterContext.Result = new RedirectResult("");//跳转页面 ???????} ???}}