在ASP.NET Core版本> = 2.0中更新
在控制器中：
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
ApplicationUser applicationUser = await _userManager.GetUserAsync(User);
string userEmail = applicationUser?.Email; // will give the user's Email
}
}
在其他班级：
public class OtherClass
{
private readonly IHttpContextAccessor _httpContextAccessor;
public OtherClass(IHttpContextAccessor httpContextAccessor)
{
_httpContextAccessor = httpContextAccessor;
}
public void YourMethodName()
{
var userId = _httpContextAccessor.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier);
}
}
然后，您应该按照以下步骤IHttpContextAccessor在Startup课程中注册：
public void ConfigureServices(IServiceCollection services)
{
services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
// Or you can also register as follows
services.AddHttpContextAccessor();
}
为了提高可读性，请编写扩展方法，如下所示：
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);
}
}
然后使用如下：
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;
}
}
System.Web.HttpContext.Current.User.Identity.Name？