[Authorize(Roles = "Administrator")]
我已经检查了数据库,我登录的用户确实在"管理员"角色。但是,Authorize属性和User.IsInRole()都不返回" true"这个角色。
在Authorize attribute not working with roles中建议
AuthorizeAttribute调用存储在HttpContext.User中的IPrincipal实例上的IsInRole方法。默认情况下,IPrincipal没有角色,在这种情况下,IsInRole将始终返回false。这就是拒绝访问您的操作的原因。
我已按照该答案中的建议使用了以下代码,但authTicket.UserData仍为空。
protected void Application_AuthenticateRequest(Object sender, EventArgs e)
{
HttpCookie authCookie = Context.Request.Cookies[FormsAuthentication.FormsCookieName];
if (authCookie != null)
{
FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
string[] roles = authTicket.UserData.Split(',');
GenericPrincipal userPrincipal = new GenericPrincipal(new GenericIdentity(authTicket.Name), roles);
Context.User = userPrincipal;
}
}
我无法弄清楚出了什么问题。为什么我可以登录,但不能找到任何角色?
这是web.config的一些相关部分:
<roleManager enabled="true" defaultProvider="SimpleRoleProvider">
<providers>
<add name="SimpleRoleProvider" type="WebMatrix.WebData.SimpleRoleProvider, WebMatrix.WebData" />
</providers>
</roleManager>
<membership defaultProvider="SimpleMembershipProvider">
<providers>
<add name="SimpleMembershipProvider" type="WebMatrix.WebData.SimpleMembershipProvider, WebMatrix.WebData" />
</providers>
</membership>
<authentication mode="Forms">
<forms loginUrl="~/Account/Login" timeout="2880" cookieless="UseCookies" />
</authentication>
这是我定义的InitializeSimpleMembershipAttribute:
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public sealed class InitializeSimpleMembershipAttribute : ActionFilterAttribute
{
private static SimpleMembershipInitializer _initializer;
private static object _initializerLock = new object();
private static bool _isInitialized;
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
// Ensure ASP.NET Simple Membership is initialized only once per app start
LazyInitializer.EnsureInitialized(ref _initializer, ref _isInitialized, ref _initializerLock);
}
private class SimpleMembershipInitializer
{
public SimpleMembershipInitializer()
{
Database.SetInitializer<UsersContext>(null);
try
{
using (var context = new UsersContext())
{
if (!context.Database.Exists())
{
// Create the SimpleMembership database without Entity Framework migration schema
((IObjectContextAdapter)context).ObjectContext.CreateDatabase();
}
}
if (!WebSecurity.Initialized)
{
WebSecurity.InitializeDatabaseConnection("VerhaalLokaalDbContext", "UserProfile", "UserId", "UserName", autoCreateTables: true);
}
}
catch (Exception ex)
{
throw new InvalidOperationException("The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588", ex);
}
}
}
}
InitializeSimpleMembershipAttribute仅在AccountController上设置。
这到底发生了什么?为什么可以找到定义并绑定到数据库中用户的角色?
答案 0 :(得分:1)
我们使用了System.Web.Security.Roles.GetRolesForUser(...)
调用,然后强行检查交叉点的角色数组。在我们的例子中,这一切都发生在自定义的AuthorizeAttribute
类中。 ()打电话。您可能不需要扩展属性,但我想为以下代码片段提供一些上下文。我们只使用委托人来获取用户名。
如,
var userRoles = System.Web.Security.Roles.GetRolesForUser(username);
var allowedRoles = Roles.Split(','); // Roles is a property on the Authorize attribute
var matches = userRoles.Intersect(allowedRoles).ToArray();
if ( matches.Length > 0 ) // true if user is in an allowed role, otherwise it is not
希望有所帮助!我确信有一种更有效的方式,我只是把我们已经使用了两年的东西拂去了。