Net Core 中WebAPI有关 Session的设置

原文地址：https://www.cnblogs.com/for-easy-fast/p/12157664.html

Net Core 中WebAPI有关 Session的设置,及获取
步骤一: 在Startup 文件中做相应的设置

ConfigureServices方法里添加

//ConfigureServices添加：

services.AddSession(options =>
{
options.Cookie.Name = ".AdventureWorks.Session";
options.IdleTimeout = System.TimeSpan.FromSeconds(120);//设置session的过期时间
options.Cookie.HttpOnly = true;//设置在浏览器不能通过js获得该cookie的值
});
services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
services.AddHttpContextAccessor();
#region 跨域
services.AddCors(options =>
options.AddPolicy("AllowSameDomain",
builder => builder.WithOrigins().AllowAnyMethod().AllowAnyHeader().AllowAnyOrigin().AllowCredentials()));
#endregion
//HttpContextAccessor 默认实现了它简化了访问HttpContext
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

Configure方法里面添加

app.UseSession();//UseSession配置在UseMvc之前
二 在具体的Control配置相应数据

1. 配置 并获取httpcontext

示例:

public class HomeController : Controller
{
private IHttpContextAccessor _accessor;
public HomeController(IHttpContextAccessor accessor)
{
_accessor = accessor;
}
public IActionResult Index()
{
var httpcontext = _accessor.HttpContext;
return View();
}
}

2. 写SessionHelper类

   public class SessionHelper
   {
   private IHttpContextAccessor _accessor;

   private ISession _session ;
   private IRequestCookieCollection _requestCookie ;
   private IResponseCookies _responseCookie;
   public SessionHelper(HttpContext context)
   {
   _session = context.Session;
   _requestCookie = context.Request.Cookies;
   _responseCookie = context.Response.Cookies;
   }
   ///

   
   /// 设置session值
   ///
   
   ///
   /// 键
   /// 值
   public void SetSession(string key, string value)
   {
   var bytes = System.Text.Encoding.UTF8.GetBytes(value);
   _session.Set(key, bytes);
   }
   ///
   
   /// 获取Session值
   ///
   
   ///
   ///
   public string GetSession(string key)
   {
   Byte[] bytes;
   _session.TryGetValue(key, out bytes);
   var value = System.Text.Encoding.UTF8.GetString(bytes);

   if (string.IsNullOrEmpty(value))
   {
   value = string.Empty;
   }
   return value;
   }
   /////

   
   ///// 设置本地cookie
   /////
   
   ///// 键
   ///// 值
   ///// 过期时间
   //public void SetCookies(string key,string value,int day = 1)
   //{
   // _responseCookie.Append(key, value, new CookieOptions
   // {
   // Expires = DateTime.Now.AddDays(day)
   // }) ;
   //}
   //public void DeleteCookies(string key)
   //{
   // _responseCookie.Delete(key);
   //}
   //public string GetCookiesValue(string key)
   //{
   // _requestCookie.TryGetValue(key, out string value);
   // if (string.IsNullOrEmpty(value))
   // {
   // value = string.Empty;
   // }
   // return value;
   //}
   }

3. 方法里调用sessionHelper

   var httpContext = _accessor.HttpContext;
   SessionHelper session = new SessionHelper(httpContext);
   string key = "王明";
   string value = "2020年 大运年";
   //设置session值
   session.SetSession(key, value);
   //获取session值
   session.GetSession(key);