如何在ASP.NET Core中处理Cookie过期 [英] How to handle cookie expiration in asp.net core

问题描述

我想知道如何正确处理Cookie过期的事实?是否可以执行自定义操作?

I would like to know how to properly handle the fact that the cookie expired? Is it possible to execute a custom action ?

我想实现的是，当cookie过期时，将通过该信息重定向到操作参数，从而从当前cookie中获取很少的信息.有可能吗?

What I would like to achieve is that when the cookie is expired is to take few informations out of the current cookie at redirect to a action parametrise by this information. Is it possible ?

推荐答案

您似乎需要自己的

Looks like you need your own handler for OnValidatePrincipal event when setuping cokies auth middleware:

OnValidatePrincipal 事件可用于拦截和覆盖cookie身份验证

OnValidatePrincipal event can be used to intercept and override validation of the cookie identity

app.UseCookieAuthentication(options =>
{
    options.Events = new CookieAuthenticationEvents
    {
        OnValidatePrincipal = <your event handler>
    };
});

文档包含此类句柄的示例:

Documentation contains example of such handle:

public static class LastChangedValidator
{
    public static async Task ValidateAsync(CookieValidatePrincipalContext context)
    {
        // Pull database from registered DI services.
        var userRepository = context.HttpContext.RequestServices.GetRequiredService<IUserRepository>();
        var userPrincipal = context.Principal;

        // Look for the last changed claim.
        string lastChanged;
        lastChanged = (from c in userPrincipal.Claims
                       where c.Type == "LastUpdated"
                       select c.Value).FirstOrDefault();

        if (string.IsNullOrEmpty(lastChanged) ||
            !userRepository.ValidateLastChanged(userPrincipal, lastChanged))
        {
            context.RejectPrincipal();
            await context.HttpContext.Authentication.SignOutAsync("MyCookieMiddlewareInstance");
        }
    }
}

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