支持在ASP.NET Core中使用同一用户的电子邮件或用户名登录 [英] Support login with email or username for same user in ASP.NET Core

问题描述

我正在将ASP.NET Core Identity(2.0)与所有默认代码一起使用.我更改了 AccountController.Login 方法以检查旧数据库并在找不到用户时迁移用户.由于该旧数据库同时具有用户名和电子邮件，因此我将在新创建的用户中填充这两个字段.

I'm using ASP.NET Core Identity (2.0) with all the default code. I changed the AccountController.Login method to check a legacy database and migrate users when a user is not found. Since that old database had both usernames and emails, I'm populating both fields in the newly created user.

但是，如果我尝试使用迁移的用户再次登录，则无法使用电子邮件，因为似乎SQL请求总是在 W.E u.NormalizedUserName = @__ normalizedUserName_0 中查找

But then, if I try to log in again with a migrated user, using the email doesn't work, as it seems the SQL request always look for WHERE u.NormalizedUserName = @__normalizedUserName_0 only.

如何为单个用户提供一封电子邮件和一个不同的用户名，以使用他们的用户名或电子邮件登录?

How can I enable a single user with an email and a username that differ to log in with either their username or their email?

推荐答案

您可以使用 UserManager 中的 CheckPasswordAsync(user，password)方法:> https://github.com/aspnet/Identity/blob/a273e349eea2be3a40b2b95bsrc/Core/UserManager.cs#L692

You have the possibility to use CheckPasswordAsync(user, password) method from UserManager: https://github.com/aspnet/Identity/blob/a273e349eea2be3a40b16e6947b2deab95f4b5b2/src/Core/UserManager.cs#L692

在调用该方法之前，您可以通过以下方式获取用户:

Right before calling that method you can fetch your user in the following manner:

 var user = await _userManager.FindByNameAsync(userName) ?? await _userManager.FindByEmailAsync(userName);

根据您当前的 UserStore 实现，您可能需要调整 FindByNameAsync 或 FindByEmailAsync 或两者.

Based on your current UserStore implementation you may need to adjust FindByNameAsync or FindByEmailAsync or both.

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