net core web 登录认证实现

builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
    .AddCookie(o =>
    {
        o.LoginPath = "/user/login";
    });

app.UseRouting();
app.UseAuthentication();    //增加登录验证，注意顺序
app.UseAuthorization();

登录验证成功后：

var claims = new List<Claim>()
{
    new Claim(ClaimTypes.Name, userInfo.Nickname),
    new Claim(ClaimTypes.NameIdentifier, userInfo.ID.ToString()),
    new Claim("Phone", userInfo.Phone)
};
var claimnsIdentity = new ClaimsIdentity(claims, CookieAuthenticationDefaults.AuthenticationScheme);

//它会自动发送token给客户端。并生成cookies
await HttpContext.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, new ClaimsPrincipal(claimnsIdentity), 
    new AuthenticationProperties
    {
        IsPersistent = true
    });

验证：

context.HttpContext.User.Identity.IsAuthenticated

取值：

string? Nickname = context.HttpContext.User.Identity.Name
string? uid = context.HttpContext.User.FindFirst(ClaimTypes.NameIdentifier)?.Value
string phone = context.HttpContext.User.FindFirst("Phone")?.Value ?? "18011112222";