ASP.NET Core身份-获取当前用户 [英] ASP.NET Core Identity - get current user

问题描述

要获得MVC5中当前登录的用户，我们要做的就是:

To get the currently logged in user in MVC5, all we had to do was:

using Microsoft.AspNet.Identity;
[Authorize]
public IHttpActionResult DoSomething() {
    string currentUserId = User.Identity.GetUserId();
}

现在，我认为使用ASP.NET Core应该可以，但是会引发错误.

Now, with ASP.NET Core I thought this should work, but it throws an error.

using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Http;

private readonly UserManager<ApplicationUser> _userManager;
[HttpPost]
[Authorize]
public async Task<IActionResult> StartSession() {
    var curUser = await _userManager.GetUserAsync(HttpContext.User);
}

有什么想法吗?

编辑:Gerardo的回复正常，但要获得用户的实际"Id"，这似乎可行:

Gerardo's response is on track but to get the actual "Id" of the user, this seems to work:

ClaimsPrincipal currentUser = this.User;
var currentUserID = currentUser.FindFirst(ClaimTypes.NameIdentifier).Value;

推荐答案

假定您的代码在MVC控制器中:

Assuming your code is inside an MVC controller:

public class MyController : Microsoft.AspNetCore.Mvc.Controller

从Controller基类，您可以从User属性获得

From the Controller base class, you can get the IClaimsPrincipal from the User property

System.Security.Claims.ClaimsPrincipal currentUser = this.User;

您可以直接检查声明(无需往返数据库):

You can check the claims directly (without a round trip to the database):

bool IsAdmin = currentUser.IsInRole("Admin");
var id = _userManager.GetUserId(User); // Get user id:

可以从数据库的用户实体中获取其他字段:

Other fields can be fetched from the database's User entity:

1. 使用依赖注入获取用户管理器

1. Get the user manager using dependency injection

private UserManager<ApplicationUser> _userManager;

//class constructor
public MyController(UserManager<ApplicationUser> userManager)
{
    _userManager = userManager;
}

并使用它:

And use it:

var user = await _userManager.GetUserAsync(User);
var email = user.Email;

这篇关于ASP.NET Core身份-获取当前用户的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！