ASP.NET MVC的Windows Authentiaction和的DirectoryServices - 当前用户获取邮件地址引发InvalidCastException [英] ASP.NET MVC Windows Authentiaction and DirectoryServices - Get Mail Address of the current user throws an InvalidCastException

问题描述

我使用ASP.NET MVC 4和Windows身份验证。
当我使用VisualStudio的一切工作正常，但是当我部署我的网站会抛出异常。

I am using ASP.NET MVC 4 and Windows Authentication. When I am using VisualStudio everything works fine, but when I deploy my site an exception is thrown.

var emailAddress = UserPrincipal.Current.EmailAddress;

抛出：

无法投类型的对象
  System.DirectoryServices.AccountManagement.GroupPrincipal到类型
  System.DirectoryServices.AccountManagement.UserPrincipal。

Unable to cast object of type 'System.DirectoryServices.AccountManagement.GroupPrincipal' to type 'System.DirectoryServices.AccountManagement.UserPrincipal'.

剩下的工作正常。用户可以进行身份​​验证，我可以得到的用户名等。

The rest works fine. Users can authenticate and I can get the users name etc.

编辑：

我启用了模拟的IIS。
现在，我得到以下异常：

I enabled Impersonation on IIS. Now I get the following exception:

[DirectoryServicesCOMException（0x80072020）：一个操作错误
  发生。 ] System.DirectoryServices.DirectoryEntry.Bind（布尔
  throwIfFail）781 System.DirectoryServices.DirectoryEntry.Bind（）
  +44 System.DirectoryServices.DirectoryEntry.get_AdsObject（）+42 System.DirectoryServices.PropertyValueCollection.PopulateList（）+29结果
  System.DirectoryServices.PropertyValueCollection..ctor（的DirectoryEntry
  进入，字符串propertyName的）+119结果
  System.DirectoryServices.PropertyCollection.get_Item（字符串
  propertyName的）+163结果
  System.DirectoryServices.AccountManagement.PrincipalContext.DoLDAPDirectoryInitNoContainer（）
  535649 System.DirectoryServices.AccountManagement.PrincipalContext.DoDomainInit（）
  +51 System.DirectoryServices.AccountManagement.PrincipalContext.Initialize（）
  +141 System.DirectoryServices.AccountManagement.PrincipalContext.get_QueryCtx（）
  +42 System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithTypeHelper（PrincipalContext
  背景，类型principalType，Nullable`1 identityType，字符串
  identityValue，日期时间refDate）+27结果
  System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithType（PrincipalContext
  背景，类型principalType，IdentityType identityType，字符串
  identityValue）+146结果
  System.DirectoryServices.AccountManagement.UserPrincipal.FindByIdentity（PrincipalContext
  背景下，IdentityType identityType，字符串identityValue）+44结果
  System.DirectoryServices.AccountManagement.UserPrincipal.get_Current（）
  +390 Jericho.MVC.HtmlHelperExtensions.GetUser（的HtmlHelper的HtmlHelper）在
  C：\\开发\\杰里科\\ Jericho.MVC \\ HtmlHelperExtensions.cs：48

[DirectoryServicesCOMException (0x80072020): An operations error occurred. ] System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail) +781 System.DirectoryServices.DirectoryEntry.Bind() +44 System.DirectoryServices.DirectoryEntry.get_AdsObject() +42 System.DirectoryServices.PropertyValueCollection.PopulateList() +29
System.DirectoryServices.PropertyValueCollection..ctor(DirectoryEntry entry, String propertyName) +119
System.DirectoryServices.PropertyCollection.get_Item(String propertyName) +163
System.DirectoryServices.AccountManagement.PrincipalContext.DoLDAPDirectoryInitNoContainer() +535649 System.DirectoryServices.AccountManagement.PrincipalContext.DoDomainInit() +51 System.DirectoryServices.AccountManagement.PrincipalContext.Initialize() +141 System.DirectoryServices.AccountManagement.PrincipalContext.get_QueryCtx() +42 System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithTypeHelper(PrincipalContext context, Type principalType, Nullable`1 identityType, String identityValue, DateTime refDate) +27
System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithType(PrincipalContext context, Type principalType, IdentityType identityType, String identityValue) +146
System.DirectoryServices.AccountManagement.UserPrincipal.FindByIdentity(PrincipalContext context, IdentityType identityType, String identityValue) +44
System.DirectoryServices.AccountManagement.UserPrincipal.get_Current() +390 Jericho.MVC.HtmlHelperExtensions.GetUser(HtmlHelper htmlHelper) in C:\Development\Jericho\Jericho.MVC\HtmlHelperExtensions.cs:48

我该怎么办？

推荐答案

将 IIS应用程序池标识为网络服务并使用：

var identityName = HttpContext.Current.User.Identity.Name;
using (HostingEnvironment.Impersonate())
{
    using (var context = new PrincipalContext(ContextType.Domain, "yourDomain", null, ContextOptions.Negotiate | ContextOptions.SecureSocketLayer))
    using (var userPrincipal = UserPrincipal.FindByIdentity(context, IdentityType.SamAccountName, identityName))
    {
        emailAddress = userPrincipal.EmailAddress;
        lastname = userPrincipal.Surname;
        firstname = userPrincipal.GivenName;
    }
}

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