c# - MVC 5 自定义 AuthorizeAttribute

Question

我想实现自定义 AuthorizeAttribute。

我有自定义用户:

    public class MyUser : IPrincipal
    {
        public List<string> Roles { get; set; }
        public IIdentity Identity{ get; set; } 
        public bool IsInRole(string role){ return Roles.Contains(role); }
    }

在 global.asax 中

    protected void Session_Start(object sender, EventArgs e)
    {
         MyUser user = new MyUser();
         user.Identity = User.Identity;
         user.Roles = new List<string>();
         user.Roles.Add("MyRole");//I will get them from AD
         HttpContext.Current.User = user;
    }

和属性

    public class AuthorizeADAttribute : AuthorizeAttribute
    {
        public string Roles { get; set; }
        protected override bool AuthorizeCore(HttpContextBase httpContext)
        {
            MyUser user = (MyUser)httpContext.User;//User is not MyUser
            if (user.Roles.Contains(Roles))
            {
                return true;
            }
            return false;
        }

        protected override void HandleUnauthorizedRequest(
        AuthorizationContext filterContext)
        {
            ...
        }
    }

问题是 httpContext.User 返回 System.Security.Claims.ClaimsPrincipal。为什么会发生这种情况以及如何从 session_start 访问我的用户？

Answer 1

您需要在 Global.asax.cs 的 Application_PostAuthenticateRequest 事件处理程序中覆盖它的值。

例如，请参阅此答案:https://stackoverflow.com/a/10524305/54937