_userManager.GetUserAsync(User)返回null [英] _userManager.GetUserAsync(User) returns null

问题描述

我正尝试在登录后检查用户的电子邮件确认状态，然后统一引导他们.

基于以下两个线程:

ASP.NET核心身份-获取当前用户

如何在asp.net核心中获取当前用户

我尝试过:

var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: false);
if (result.Succeeded)
{
    ClaimsPrincipal currentUser = this.User;
    var thisUser = await _userManager.GetUserAsync(currentUser);
    if(thisUser.EmailConfirmed)
    {
        return View("~/Views/Task/Index.cshtml");
    }
    else
    {
        return View("ConfirmEmail");
    }
}

还有这个:

var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: false);
if (result.Succeeded)
{   
    var thisUser = await _userManager.GetUserAsync(HttpContext.User);
    if(thisUser.EmailConfirmed)
    {
        return View("~/Views/Task/Index.cshtml");
    }
    else
    {
        return View("ConfirmEmail");
    }
}

从控制器内部开始，但thisUser始终为空.

我如何在登录时检查其电子邮件已得到确认并正确重定向?

解决方案

您的方法有一个问题，对于Membership和Identity来说是正确的:它们基于cookies. Cookies只有在客户端发送的情况下才能被读取.

所以，这就是你的流程:

1. 设置cookie
2. 读取cookie

如上所述，这是错误的.您的流程应该是:

1. 设置cookie
2. 重定向到某个地方
3. 读取cookie(现在由客户端发送)

OR

1. 设置cookie
2. 根据已有的email，从存储在任何位置的数据中读取数据

I am trying to check a users email confirmation status after login and then direct them accordigly.

Based on these two threads:

ASP.NET Core Identity - get current user

How get current user in asp.net core

I tried this:

var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: false);
if (result.Succeeded)
{
    ClaimsPrincipal currentUser = this.User;
    var thisUser = await _userManager.GetUserAsync(currentUser);
    if(thisUser.EmailConfirmed)
    {
        return View("~/Views/Task/Index.cshtml");
    }
    else
    {
        return View("ConfirmEmail");
    }
}

And also this:

var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: false);
if (result.Succeeded)
{   
    var thisUser = await _userManager.GetUserAsync(HttpContext.User);
    if(thisUser.EmailConfirmed)
    {
        return View("~/Views/Task/Index.cshtml");
    }
    else
    {
        return View("ConfirmEmail");
    }
}

From inside controller but thisUser is always null.

How do I check on logon that their email is confirmed and re-direct appropriately?

解决方案

There's a problem to your approach, which is true for Membership and Identity: they're based on cookies. Cookies can only be read if they are sent by the client.

So, this is your flow:

1. Set cookie
2. Read cookie

This is wrong as explained above. Your flow should either be:

1. Set cookie
2. Redirect somewhere
3. Read cookie (which now was sent by the client)

OR

1. Set cookie
2. Read data from wherever it's stored basing on the email you already have

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