LoginAuthorizationFilter.cs

using Microsoft.AspNetCore.Mvc.Filters;
using PT.Common;
using PT.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace PT.Web.Mvc.App_Start
{

    /// <summary>
    /// 登录授权过滤
    /// </summary>
    public class LoginAuthorizationFilter : Attribute, IAuthorizationFilter
    {
        private SessionHelper sessionHelper;

        /// <summary>
        /// 登录授权过滤
        /// </summary>
        /// <param name="context"></param>
        public void OnAuthorization(AuthorizationFilterContext context)
        {
            sessionHelper = new SessionHelper(context.HttpContext.Session);

            UserList user = sessionHelper.GetUserInfoString();

            if (user == null)
            {

                context.HttpContext.Response.Redirect("/Login/Index");
            }

        }
    }
}