asp.netCore中 Cookie、Session使用

方法一、在.netCore中使用session首先需要在Startup中进行配置，

在 public IServiceProvider ConfigureServices(IServiceCollection services)中添加

//添加session
services.AddDistributedMemoryCache();
services.AddSession(options =>
{
  // 设置 Session 过期时间15分钟
  options.IdleTimeout = TimeSpan.FromMinutes(15);
});

为方便统一获取，把Cookie和Session统一放到BaseController中

    public abstract class BaseController : Controller
    {
        private readonly IHttpContextAccessor _httpContextAccessor;
        private ISession _session => _httpContextAccessor.HttpContext.Session;
        /// <summary>
        /// 设置本地cookie
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>  
        /// <param name="minutes">过期时长，单位：分钟</param>      
        protected void SetCookies(string key, string value, int minutes = 30)
        {
            HttpContext.Response.Cookies.Append(key, value, new CookieOptions
            {
                Expires = DateTime.Now.AddMinutes(minutes)
            });
        }
        /// <summary>
        /// 删除指定的cookie
        /// </summary>
        /// <param name="key">键</param>
        protected void DeleteCookies(string key)
        {
            HttpContext.Response.Cookies.Delete(key);
        }

        /// <summary>
        /// 获取cookie的value
        /// </summary>
        /// <param name="key">键</param>
        /// <returns>返回对应的值</returns>
        protected string GetCookiesValue(string key)
        {
            HttpContext.Request.Cookies.TryGetValue(key, out string value);
            if (string.IsNullOrEmpty(value))
                value = string.Empty;
            return value;
        }

        /// <summary>
        /// 添加Sesssion
        /// </summary>
        /// <param name="SesionStr"></param>
        /// <param name="Code"></param>
        public void SetSession(string SesionStr, string Code)
        {
            _session.SetString(SesionStr, Code);
        }

        /// <summary>
        /// 获取Session
        /// </summary>
        public string GetSession(string SesionStr)
        {
            string code = _session.GetString(SesionStr);
            return code;
        }
    }

在HomeController继承BaseController,并进行设置Cookies和Session

设置Cookies

 SetCookies("CookiesKey", cookieValue, 60);

获取Cookies

GetCookiesValue("CookiesKey");

方法二、设置和读取Session。

添加SessionExtensions类，使用序列化来保存Value

    using Microsoft.AspNetCore.Http;//需要添加此应用
    //添加和获取Session
    public static class SessionExtensions
    {
        public static void SetObjectAsJson<T>(this ISession session, string key, T value)
        {
            session.SetString(key, JsonConvert.SerializeObject(value));
        }

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

设置Session

//values可以为单一字符或者实体类
HttpContext.Session.SetObjectAsJson("SessionKey", UserModel);

获取Session

HttpContext.Session.GetObjectFromJson<UserModel>("SessionKey");