ASP.NET Identity “Role-based” Claims

问题

I understand that I can use claims to make statements about a user:

var claims = new List<Claim>();
claims.Add(new Claim(ClaimTypes.Name, "Peter"));
claims.Add(new Claim(ClaimTypes.Email, "peter@domain.com"));

But how should I store "role-based" claims? For example:

The user is a super administrator.

claims.Add(new Claim("IsSuperAdmin, "true"));

The value parameter "true" feels completely redundant. How else can this statement be expressed using claims?

回答1:

This is already done for you by the framework. When user is logged in, all user roles are added as claims with claims type being ClaimTypes.Role and values are role name.

And when you execute IPrincipal.IsInRole("SuperAdmin") the framework actually checks if the claim with type ClaimTypes.Role and value SuperAdmin is present on the user.

So don't need to do anything special. Just add a user to a role.

回答2:

You can store roles using the ClaimType Role

claims.Add(new Claim(ClaimTypes.Role, "SuperAdmin"));

回答3:

You need to specify the Role in a claim with a type of ClaimsType.Role and then specify the claim type that contains the role in the ClaimsIdentity as shown below.

var claimsIdentity = new ClaimsIdentity(new[]
{
    new Claim(ClaimTypes.Email, "peter@domain.com"),
    new Claim(ClaimTypes.Name, "Peter"),
    new Claim(ClaimTypes.Role, "SuperAdmin"),
},
"ApplicationCookie", ClaimTypes.Email, ClaimTypes.Role);

This will then allow you to use the [Authorize(Roles = "SuperAdmin")] attribute in your controllers.

来源：https://stackoverflow.com/questions/28410748/asp-net-identity-role-based-claims