如何在ASP.NET Core中获取当前登录的用户ID？
我以前使用MVC5使用如何在ASP.NET Core中获取当前登录的用户ID？,asp.net,asp.net-identity,asp.net-core-mvc,asp.net-core-1.0,Asp.net,Asp.net Identity,Asp.net Core Mvc,Asp.net Core 1.0,我以前使用MVC5使用User.Identity.GetUserId（）完成过这项工作，但在这里似乎不起作用。 User.Identity没有GetUserId（）方法 我使用的是Microsoft.AspNet.Identity我使用的是System.Security.Claims，我可以访问GetUserId（）扩展方法 注意：我已经有了使用Microsoft.AspNet.Identity的方法，但无法获得扩展方法。所以我想这两个词必须结合使用 using Microsoft.AspNet
User.Identity.GetUserId（）User.IdentityGetUserId（）我使用的是
Microsoft.AspNet.Identityusing Microsoft.AspNet.Identity;
using System.Security.Claims;
这个答案现在已经过时了。查看Soren或Adrien的答案，了解在Core1.0中实现这一点的过时方法如果您希望在ASP.NET MVC控制器中实现这一点，请使用
using Microsoft.AspNet.Identity;
User.Identity.GetUserId();
您需要使用语句添加
，因为没有它，GetUserId（）
就不存在。直到ASP.NET Core 1.0RC1：
它是System.Security.Claims命名空间中的User.GetUserId（）
自ASP.NET Core 1.0RC2以来：
现在必须使用UserManager。
您可以创建一个方法来获取当前用户：
private Task<ApplicationUser> GetCurrentUserAsync() => _userManager.GetUserAsync(HttpContext.User);
注意：
您可以不使用这样的方法来编写单行代码，比如string mail=（await\u userManager.GetUserAsync（HttpContext.User））？.Email
，但它不遵守单一责任原则。最好隔离获取用户的方式，因为如果有一天你决定更改用户管理系统，比如使用另一种解决方案而不是Identity，这将非常痛苦，因为你必须查看整个代码。你可以在控制器中获取它：
using System.Security.Claims;
var userId = this.User.FindFirstValue(ClaimTypes.NameIdentifier);
public class YourControllerNameController : Controller
{
private readonly UserManager<ApplicationUser> _userManager;
public YourControllerNameController(UserManager<ApplicationUser> userManager)
{
_userManager = userManager;
}
public async Task<IActionResult> YourMethodName()
{
var userId = User.FindFirstValue(ClaimTypes.NameIdentifier) // will give the user's userId
var userName = User.FindFirstValue(ClaimTypes.Name) // will give the user's userName
// For ASP.NET Core <= 3.1
ApplicationUser applicationUser = await _userManager.GetUserAsync(User);
string userEmail = applicationUser?.Email; // will give the user's Email
// For ASP.NET Core >= 5.0
var userEmail = User.FindFirstValue(ClaimTypes.Email) // will give the user's Email
}
}
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier);
}
}
public static class ClaimsPrincipalExtensions
{
public static T GetLoggedInUserId<T>(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
var loggedInUserId = principal.FindFirstValue(ClaimTypes.NameIdentifier);
if (typeof(T) == typeof(string))
{
return (T)Convert.ChangeType(loggedInUserId, typeof(T));
}
else if (typeof(T) == typeof(int) || typeof(T) == typeof(long))
{
return loggedInUserId != null ? (T)Convert.ChangeType(loggedInUserId, typeof(T)) : (T)Convert.ChangeType(0, typeof(T));
}
else
{
throw new Exception("Invalid type provided");
}
}
public static string GetLoggedInUserName(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirstValue(ClaimTypes.Name);
}
public static string GetLoggedInUserEmail(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirstValue(ClaimTypes.Email);
}
}
public class YourControllerNameController : Controller
{
public IActionResult YourMethodName()
{
var userId = User.GetLoggedInUserId<string>(); // Specify the type of your UserId;
var userName = User.GetLoggedInUserName();
var userEmail = User.GetLoggedInUserEmail();
}
}
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.GetLoggedInUserId<string>(); // Specify the type of your UserId;
}
}
或像以前一样编写扩展方法。Core v1.0
using System;
using System.Security.Claims;
namespace Shared.Web.MvcExtensions
{
public static class ClaimsPrincipalExtensions
{
public static string GetUserId(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirst(ClaimTypes.NameIdentifier)?.Value;
}
}
}
并在用户ClaimsPrincipal可用的任何位置获取：
正如本文中所述，GetUserId（）方法已被移动到UserManager
private readonly UserManager<ApplicationUser> _userManager;
public YourController(UserManager<ApplicationUser> userManager)
{
_userManager = userManager;
}
public IActionResult MyAction()
{
var userId = _userManager.GetUserId(HttpContext.User);
var model = GetSomeModelByUserId(userId);
return View(model);
}
private readonly UserManager\u UserManager；
公共YourController（用户管理器用户管理器）
{
_userManager=userManager；
}
公共IActionResult MyAction（）
{
var userId=\u userManager.GetUserId（HttpContext.User）；
var model=GetSomeModelByUserId（userId）；
返回视图（模型）；
}
如果启动了一个空项目，则可能需要将UserManger添加到startup.cs中的服务中。否则情况应该已经如此了。虽然阿德里安的答案是正确的，但你可以在一行中完成这一切。不需要额外的功能或混乱
我在ASP.NETCore1.0中检查了它
var user = await _userManager.GetUserAsync(HttpContext.User);
然后可以获得变量的其他属性，如user.Email
。我希望这对某人有所帮助。您必须导入Microsoft.AspNetCore.Identity&System.Security.Claims
// to get current user ID
var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
// to get current user info
var user = await _userManager.FindByIdAsync(userId);
对于.NET Core 2.0，在控制器
类中获取登录用户的用户ID时，仅需要以下内容：
var userId = this.User.FindFirstValue(ClaimTypes.NameIdentifier);
或
e、 g
对于ASP.NET Core 2.0、实体框架Core 2.0、AspNetCore.Identity 2.0 api（）：
Id
已更改为User.Identity.Name
[Authorize, HttpGet("Profile")]
public async Task<IActionResult> GetProfile()
{
var user = await _userManager.FindByIdAsync(User.Identity.Name);
return Json(new
{
IsAuthenticated = User.Identity.IsAuthenticated,
Id = User.Identity.Name,
Name = $"{user.FirstName} {user.LastName}",
Type = User.Identity.AuthenticationType,
});
}
[Authorize，HttpGet（“Profile”）]
公共异步任务GetProfile（）
{
var user=await\u userManager.FindByIdAsync（user.Identity.Name）；
返回Json（新的
{
IsAuthenticated=User.Identity.IsAuthenticated，
Id=User.Identity.Name，
Name=$“{user.FirstName}{user.LastName}”，
类型=User.Identity.AuthenticationType，
});
}
答复：
User.Identity.GetUserId（）
asp.net identity core 2.0中不存在。在这方面，我采取了不同的管理方式。我创建了一个用于整个应用程序的公共类，因为它可以获取用户信息
创建公共类pcomon和接口IPCommon
使用System.Security.Claims添加参考
using Microsoft.AspNetCore.Http;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using System.Threading.Tasks;
namespace Common.Web.Helper
{
public class PCommon: IPCommon
{
private readonly IHttpContextAccessor _context;
public PayraCommon(IHttpContextAccessor context)
{
_context = context;
}
public int GetUserId()
{
return Convert.ToInt16(_context.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier));
}
public string GetUserName()
{
return _context.HttpContext.User.Identity.Name;
}
}
public interface IPCommon
{
int GetUserId();
string GetUserName();
}
}
这里介绍了公共类的实现
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.Extensions.Logging;
using Pay.DataManager.Concreate;
using Pay.DataManager.Helper;
using Pay.DataManager.Models;
using Pay.Web.Helper;
using Pay.Web.Models.GeneralViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace Pay.Controllers
{
[Authorize]
public class BankController : Controller
{
private readonly IUnitOfWork _unitOfWork;
private readonly ILogger _logger;
private readonly IPCommon _iPCommon;
public BankController(IUnitOfWork unitOfWork, IPCommon IPCommon, ILogger logger = null)
{
_unitOfWork = unitOfWork;
_iPCommon = IPCommon;
if (logger != null) { _logger = logger; }
}
public ActionResult Create()
{
BankViewModel _bank = new BankViewModel();
CountryLoad(_bank);
return View();
}
[HttpPost, ActionName("Create")]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Insert(BankViewModel bankVM)
{
if (!ModelState.IsValid)
{
CountryLoad(bankVM);
//TempData["show-message"] = Notification.Show(CommonMessage.RequiredFieldError("bank"), "Warning", type: ToastType.Warning);
return View(bankVM);
}
try
{
bankVM.EntryBy = _iPCommon.GetUserId();
var userName = _iPCommon.GetUserName()();
//_unitOfWork.BankRepo.Add(ModelAdapter.ModelMap(new Bank(), bankVM));
//_unitOfWork.Save();
// TempData["show-message"] = Notification.Show(CommonMessage.SaveMessage(), "Success", type: ToastType.Success);
}
catch (Exception ex)
{
// TempData["show-message"] = Notification.Show(CommonMessage.SaveErrorMessage("bank"), "Error", type: ToastType.Error);
}
return RedirectToAction(nameof(Index));
}
}
}
谢谢，
Maksud在ASP.NET核心版本中更新>=2.0
在控制器中：
using System.Security.Claims;
var userId = this.User.FindFirstValue(ClaimTypes.NameIdentifier);
public class YourControllerNameController : Controller
{
private readonly UserManager<ApplicationUser> _userManager;
public YourControllerNameController(UserManager<ApplicationUser> userManager)
{
_userManager = userManager;
}
public async Task<IActionResult> YourMethodName()
{
var userId = User.FindFirstValue(ClaimTypes.NameIdentifier) // will give the user's userId
var userName = User.FindFirstValue(ClaimTypes.Name) // will give the user's userName
// For ASP.NET Core <= 3.1
ApplicationUser applicationUser = await _userManager.GetUserAsync(User);
string userEmail = applicationUser?.Email; // will give the user's Email
// For ASP.NET Core >= 5.0
var userEmail = User.FindFirstValue(ClaimTypes.Email) // will give the user's Email
}
}
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier);
}
}
public static class ClaimsPrincipalExtensions
{
public static T GetLoggedInUserId<T>(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
var loggedInUserId = principal.FindFirstValue(ClaimTypes.NameIdentifier);
if (typeof(T) == typeof(string))
{
return (T)Convert.ChangeType(loggedInUserId, typeof(T));
}
else if (typeof(T) == typeof(int) || typeof(T) == typeof(long))
{
return loggedInUserId != null ? (T)Convert.ChangeType(loggedInUserId, typeof(T)) : (T)Convert.ChangeType(0, typeof(T));
}
else
{
throw new Exception("Invalid type provided");
}
}
public static string GetLoggedInUserName(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirstValue(ClaimTypes.Name);
}
public static string GetLoggedInUserEmail(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirstValue(ClaimTypes.Email);
}
}
public class YourControllerNameController : Controller
{
public IActionResult YourMethodName()
{
var userId = User.GetLoggedInUserId<string>(); // Specify the type of your UserId;
var userName = User.GetLoggedInUserName();
var userEmail = User.GetLoggedInUserEmail();
}
}
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.GetLoggedInUserId<string>(); // Specify the type of your UserId;
}
}
然后您应该在启动
类中注册IHttpContextAccessor
，如下所示：
public void ConfigureServices(IServiceCollection services)
{
services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
// Or you can also register as follows
services.AddHttpContextAccessor();
}
public void配置服务（IServiceCollection服务）
{
services.TryAddSingleton（）；
//或者你也可以注册如下
AddHttpContextAccessor（）；
}
要获得更多可读性，请编写如下扩展方法：
using System.Security.Claims;
var userId = this.User.FindFirstValue(ClaimTypes.NameIdentifier);
public class YourControllerNameController : Controller
{
private readonly UserManager<ApplicationUser> _userManager;
public YourControllerNameController(UserManager<ApplicationUser> userManager)
{
_userManager = userManager;
}
public async Task<IActionResult> YourMethodName()
{
var userId = User.FindFirstValue(ClaimTypes.NameIdentifier) // will give the user's userId
var userName = User.FindFirstValue(ClaimTypes.Name) // will give the user's userName
// For ASP.NET Core <= 3.1
ApplicationUser applicationUser = await _userManager.GetUserAsync(User);
string userEmail = applicationUser?.Email; // will give the user's Email
// For ASP.NET Core >= 5.0
var userEmail = User.FindFirstValue(ClaimTypes.Email) // will give the user's Email
}
}
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier);
}
}
public static class ClaimsPrincipalExtensions
{
public static T GetLoggedInUserId<T>(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
var loggedInUserId = principal.FindFirstValue(ClaimTypes.NameIdentifier);
if (typeof(T) == typeof(string))
{
return (T)Convert.ChangeType(loggedInUserId, typeof(T));
}
else if (typeof(T) == typeof(int) || typeof(T) == typeof(long))
{
return loggedInUserId != null ? (T)Convert.ChangeType(loggedInUserId, typeof(T)) : (T)Convert.ChangeType(0, typeof(T));
}
else
{
throw new Exception("Invalid type provided");
}
}
public static string GetLoggedInUserName(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirstValue(ClaimTypes.Name);
}
public static string GetLoggedInUserEmail(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirstValue(ClaimTypes.Email);
}
}
public class YourControllerNameController : Controller
{
public IActionResult YourMethodName()
{
var userId = User.GetLoggedInUserId<string>(); // Specify the type of your UserId;
var userName = User.GetLoggedInUserName();
var userEmail = User.GetLoggedInUserEmail();
}
}
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.GetLoggedInUserId<string>(); // Specify the type of your UserId;
}
}
公共静态类ClaimsPrincipalExtensions
{
公共静态T GetLoggedInUserId（此ClaimsPrincipal主体）
{
if（principal==null）
抛出新ArgumentNullException（nameof（principal））；
var loggedInUserId=principal.FindFirstValue（ClaimTypes.NameIdentifier）；
if（typeof（T）=typeof（string））
{
return（T）Convert.ChangeType（loggedInUserId，typeof（T））；
}
else if（typeof（T）=typeof（int）| | typeof（T）=typeof（long））
{
返回loggedInUserId！=null？（T）Convert.ChangeType（loggedInUserId，typeof（T））：（T）Convert.ChangeType（0，typeof（T））；
}
其他的
{
抛出新异常（“提供的类型无效”）；
}
}
公共静态字符串GetLoggedInUserName（此ClaimsPrincipal主体）
{
if（principal==null）
抛出新ArgumentNullException（nameof（principal））；
返回principal.FindFirstValue（ClaimTypes.Name）；
}
公共静态字符串GetLoggedInUserEmail（此ClaimsPrincipal主体）
{
if（principal==null）
抛出新ArgumentNullException（nameof（principal））；
返回principal.FindFirstValue（ClaimTypes.Email）；
}
}
然后按如下方式使用：
using System.Security.Claims;
var userId = this.User.FindFirstValue(ClaimTypes.NameIdentifier);
public class YourControllerNameController : Controller
{
private readonly UserManager<ApplicationUser> _userManager;
public YourControllerNameController(UserManager<ApplicationUser> userManager)
{
_userManager = userManager;
}
public async Task<IActionResult> YourMethodName()
{
var userId = User.FindFirstValue(ClaimTypes.NameIdentifier) // will give the user's userId
var userName = User.FindFirstValue(ClaimTypes.Name) // will give the user's userName
// For ASP.NET Core <= 3.1
ApplicationUser applicationUser = await _userManager.GetUserAsync(User);
string userEmail = applicationUser?.Email; // will give the user's Email
// For ASP.NET Core >= 5.0
var userEmail = User.FindFirstValue(ClaimTypes.Email) // will give the user's Email
}
}
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier);
}
}
public static class ClaimsPrincipalExtensions
{
public static T GetLoggedInUserId<T>(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
var loggedInUserId = principal.FindFirstValue(ClaimTypes.NameIdentifier);
if (typeof(T) == typeof(string))
{
return (T)Convert.ChangeType(loggedInUserId, typeof(T));
}
else if (typeof(T) == typeof(int) || typeof(T) == typeof(long))
{
return loggedInUserId != null ? (T)Convert.ChangeType(loggedInUserId, typeof(T)) : (T)Convert.ChangeType(0, typeof(T));
}
else
{
throw new Exception("Invalid type provided");
}
}
public static string GetLoggedInUserName(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirstValue(ClaimTypes.Name);
}
public static string GetLoggedInUserEmail(this ClaimsPrincipal principal)
{
if (principal == null)
throw new ArgumentNullException(nameof(principal));
return principal.FindFirstValue(ClaimTypes.Email);
}
}
public class YourControllerNameController : Controller
{
public IActionResult YourMethodName()
{
var userId = User.GetLoggedInUserId<string>(); // Specify the type of your UserId;
var userName = User.GetLoggedInUserName();
var userEmail = User.GetLoggedInUserEmail();
}
}
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.GetLoggedInUserId<string>(); // Specify the type of your UserId;
}
}
public类YourControllerNameController:Controller
{
public IActionResult YourMethodName（）
{
var userId=User.GetLoggedInUserId（）；//指定用户ID的类型；
var userName=User.GetLoggedInUserName（）；
var userEmail=User.GetLoggedInUserEmail（）；
}
}