ASP.NET Core 好像不能像20年前那样直接使用Session函数，我使用如下方法

1、在NuGet安装以下2个包

2、在Program.cs注册

//注册Session
builder.Services.AddSession(options =>
{options.IdleTimeout = TimeSpan.FromMinutes(60);options.Cookie.HttpOnly = false;
});
//注册上下文
builder.Services.AddHttpContextAccessor();var app = builder.Build();//启用Session
app.UseSession();

3、在控制器中使用

public class HomeController : Controller
{private readonly ILogger<HomeController> _logger;private readonly ISession _session; //session对象private readonly IHttpContextAccessor _contextAccessor; //上下文对象//构造函数的参数中引用IHttpContextAccessor对象//再把它和它的Session赋值给本控制器的_contextAccessor和_session public HomeController(ILogger<HomeController> logger, IHttpContextAccessor contextAccessor){_logger = logger;_contextAccessor = contextAccessor; _session = contextAccessor.HttpContext.Session;}public IActionResult Index(){//然后可以使用_session来添加或者读取需要的变量_session.SetString("uname", "Jack");ViewData["uid"] = _session.GetString("uname");return View();}}