Question

我正在尝试获取Thread.CurrentPrincipal.Identity.Name并且它似乎返回一个空字符串。

我尝试过以管理员身份和其他用户身份运行，但它仍然在执行此操作。如果我转到对象上的Claims，则发布者为LOCAL AUTHORITY。这不应该返回我登录的用户吗？

public string GetCurrentUser()
        {
            var principal = Thread.CurrentPrincipal.Identity.Name;

            //Thread.CurrentPrincipal.Identity
            return principal;
        }

Answer 1

CurrentPrincipal property uses internal GetThreadPrincipal method of AppDomain type to build IPrincipal object by default.

internal IPrincipal GetThreadPrincipal()
{
  IPrincipal principal;
  if (this._DefaultPrincipal == null)
  {
    switch (this._PrincipalPolicy)
    {
      case PrincipalPolicy.UnauthenticatedPrincipal:
        principal = (IPrincipal) new GenericPrincipal((IIdentity) new GenericIdentity("", ""), new string[1]
        {
          ""
        });
        break;
      case PrincipalPolicy.NoPrincipal:
        principal = (IPrincipal) null;
        break;
      case PrincipalPolicy.WindowsPrincipal:
        principal = (IPrincipal) new WindowsPrincipal(WindowsIdentity.GetCurrent());
        break;
      default:
        principal = (IPrincipal) null;
        break;
    }
  }
  else
    principal = this._DefaultPrincipal;
  return principal;
}

GetThreadPrincipal method uses PrincipalPolicy which is UnauthenticatedPrincipal by default.

You can change default behavior. For example you can use SetPrincipalPolicy method of AppDomain with PrincipalPolicy.WindowsPrincipal to get a Windows user

    var appDomain = AppDomain.CurrentDomain;
    appDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);
    var principal = Thread.CurrentPrincipal;
    var user = principal.Identity.Name;

Thread.CurrentPrincipal返回空字符串

1 个答案: