ASP.NET核心会话状态

Question

我有一个控制器，其中有几种方法。如果登录成功，则在登录方法中，我启动HttpContext.Session.SetInt32("ID")。此ID是已登录用户的ID。我在许多其他方法中使用此ID进行更多的计算和查询。在每种方法中，我都必须声明一个变量，例如 ?int userId = HttpContext.Session.GetINT32("ID")在该方法中使用此变量。

如何在不使用HttpContext.Session.GetInt32语句的情况下，以可以在其他Action方法中使用它的方式全局声明它。我只是尝试使用DRY原理，以使我的代码更简洁。

有什么帮助吗？

Answer 1

using AlhabtoorTennisAcademy.CustomFilters;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace ProjectNameSpace
{
    public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            // webforms page route
            //Custom route code for webform
            routes.MapPageRoute("home", "WebForm", "~/WebForm.aspx", false,
              new RouteValueDictionary {
            { "path", "page-not-found" },{ "pagename", "page-not-found" }
            });
}
}
........

Answer 2

如果您使用的是Identity，则可以这样获得用户ID：

other_linker_flags

Answer 3

在ASP.NET Core中（全球）管理会话的最佳方法是：

1）。添加静态类SessionExtensions.cs

       public static class SessionExtensions
        {
            public static void SetObject(this ISession session, string key, object value)
            {
                session.SetString(key, JsonConvert.SerializeObject(value));
            }

            public static T GetObject<T>(this ISession session, string key)
            {
                var value = session.GetString(key);
                return value == null ? default(T) : JsonConvert.DeserializeObject<T>(value);
            }

            public static void SetBoolean(this ISession session, string key, bool value)
            {
                session.Set(key, BitConverter.GetBytes(value));
            }

            public static bool? GetBoolean(this ISession session, string key)
            {
                var data = session.Get(key);
                if (data == null)
                {
                    return null;
                }
                return BitConverter.ToBoolean(data, 0);
            }

            public static void SetDouble(this ISession session, string key, double value)
            {
                session.Set(key, BitConverter.GetBytes(value));
            }

            public static double? GetDouble(this ISession session, string key)
            {
                var data = session.Get(key);
                if (data == null)
                {
                    return null;
                }
                return BitConverter.ToDouble(data, 0);
            }
        }

2）。添加静态类UserSession.cs

    public static class UserSession
        {
            private static IHttpContextAccessor _accessor;
            public static void Configure(IHttpContextAccessor httpContextAccessor)
            {
                _accessor = httpContextAccessor;
            }

            public static HttpContext HttpContext => _accessor.HttpContext;


            public static Guid UserId
            {
                get
                {
                    if (HttpContext.Session.GetString("UserId") == null || Guid.Parse(HttpContext.Session.GetString("UserId")) == Guid.Empty)
                        return Guid.Empty;
                    else
                        return Guid.Parse(Convert.ToString(HttpContext.Session.GetString("UserId")));
                }
                set
                {
                    HttpContext.Session.SetString("UserId", Convert.ToString(value));
                }
            }


            public static byte[] ProfileImage
            {
                get
                {
                    if (HttpContext.Session.GetObject<byte[]>("ProfileImage") == null)
                        return null;
                    else
                        return HttpContext.Session.GetObject<byte[]>("ProfileImage");
                }
                set
                {
                    HttpContext.Session.SetObject("ProfileImage", value);
                }
            }

            public static string JwtToken
            {
                get
                {
                    if (HttpContext.Session.GetString("JwtToken") == null)
                        return null;
                    else
                        return HttpContext.Session.GetString("JwtToken");
                }
                set
                {
                    HttpContext.Session.SetString("JwtToken", value);
                }
            }

            public static string FirstName
            {
                get
                {
                    if (HttpContext.Session.GetString("FirstName") == null)
                        return null;
                    else
                        return HttpContext.Session.GetString("FirstName");
                }
                set
                {
                    HttpContext.Session.SetString("FirstName", value);
                }
            }

            public static string LastName
            {
                get
                {
                    if (HttpContext.Session.GetString("LastName") == null)
                        return null;
                    else
                        return HttpContext.Session.GetString("LastName");
                }
                set
                {
                    HttpContext.Session.SetString("LastName", value);
                }
            }

            public static string FullName { get { return (!string.IsNullOrWhiteSpace(FirstName) ? FirstName : string.Empty) + " " + (!string.IsNullOrWhiteSpace(LastName) ? LastName : string.Empty); } }


            public static string Email
            {
                get
                {
                    if (HttpContext.Session.GetString("Email") == null)
                        return null;
                    else
                        return HttpContext.Session.GetString("Email");
                }
                set
                {
                    HttpContext.Session.SetString("Email", value);
                }
            }
        }

3）。将其添加到startup.cs

     public void ConfigureServices(IServiceCollection services)
    {
     services.AddSession(options =>
                {
                    options.IdleTimeout = TimeSpan.FromMinutes(60);//You can set Time   
                });

            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        app.UseSession();

        UserSession.Configure(app.ApplicationServices.GetRequiredService<IHttpContextAccessor>());
    }

4）。瞧完成

--------------------
How to use :

Set session (Ex:Set session for UserId) > UserSession.UserId = 1;
Get session (int id = UserSession.UserId)