Question

我是新的MVC 3用户，我正在尝试通过SQL数据库进行管理。首先，我有Customer实体和admin可以通过admin字段定义，这是Customer实体中的布尔类型。我想只在“产品”页面中访问管理员，而不是普通客户。我想制作[授权（角色=“管理员”）]而不是[授权]。但是，我不知道如何才能真正在我的代码中创建管理员角色。然后在我的HomeController中，我编写了这段代码。

public class HomeController : Controller
{

    [HttpPost]
    public ActionResult Index(Customer model)
    {
        if (ModelState.IsValid)
        {
            //define user whether admin or customer
            SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["rentalDB"].ToString());
            String find_admin_query = "SELECT admin FROM Customer WHERE userName = '" + model.userName + "' AND admin ='true'";
            SqlCommand cmd = new SqlCommand(find_admin_query, conn);
            conn.Open();
            SqlDataReader sdr = cmd.ExecuteReader();
            //it defines admin which is true or false
            model.admin = sdr.HasRows;
            conn.Close();

            //if admin is logged in
            if (model.admin == true) {
                Roles.IsUserInRole(model.userName, "admin"); //Is it right?
                if (DAL.UserIsVaild(model.userName, model.password))
                {
                    FormsAuthentication.SetAuthCookie(model.userName, true);
                    return RedirectToAction("Index", "Product");
                }
            }

            //if customer is logged in
            if (model.admin == false) {
                if (DAL.UserIsVaild(model.userName, model.password))
                {
                    FormsAuthentication.SetAuthCookie(model.userName, true);                   
                    return RedirectToAction("Index", "Home");
                }
            }
                ModelState.AddModelError("", "The user name or password is incorrect.");
        }
        // If we got this far, something failed, redisplay form
        return View(model);
    }

DAL课程是

 public class DAL
{
    static SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["rentalDB"].ToString());

    public static bool UserIsVaild(string userName, string password)
    {
        bool authenticated = false;
        string customer_query = string.Format("SELECT * FROM [Customer] WHERE userName = '{0}' AND password = '{1}'", userName, password);      
        SqlCommand cmd = new SqlCommand(customer_query, conn);
        conn.Open();
        SqlDataReader sdr = cmd.ExecuteReader();
        authenticated = sdr.HasRows;
        conn.Close();
        return (authenticated);
    }
}

最后，我想制作自定义[授权（角色=“管理员”）]

[Authorize(Roles="admin")]
public class ProductController : Controller
{
  public ViewResult Index()
    {
        var product = db.Product.Include(a => a.Category);
        return View(product.ToList());
    }
}

这些是我的源代码。我需要制作'AuthorizeAttribute'类吗？如果我必须这样做，我该怎么做呢？你能跟我解释一下吗？我无法理解如何在我的案例中设定特定的角色。请帮帮我怎么办。感谢。

Answer 1

我知道这个问题有点老了，但这就是我做类似的事情。我创建了一个自定义授权属性，用于检查用户是否具有正确的安全访问权限：

[System.AttributeUsage(System.AttributeTargets.All, AllowMultiple = false, Inherited = true)]
public sealed class AccessDeniedAuthorizeAttribute : AuthorizeAttribute
{
    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        base.OnAuthorization(filterContext);

        // Get the roles from the Controller action decorated with the attribute e.g.
        // [AccessDeniedAuthorize(Roles = MyRoleEnum.UserRole + "," + MyRoleEnum.ReadOnlyRole)]
        var requiredRoles = Roles.Split(Convert.ToChar(","));

        // Get the highest role a user has, from role provider, db lookup, etc.
        // (This depends on your requirements - you could also get all roles for a user and check if they have the correct access)
        var highestUserRole = GetHighestUserSecurityRole();

        // If running locally bypass the check
        if (filterContext.HttpContext.Request.IsLocal) return;

        if (!requiredRoles.Any(highestUserRole.Contains))
        {
            // Redirect to access denied view
            filterContext.Result = new ViewResult { ViewName = "AccessDenied" };
        }
    }
}

现在使用自定义属性修饰Controller（您还可以修饰单个Controller操作）：

[AccessDeniedAuthorize(Roles="user")]
public class ProductController : Controller
{
    [AccessDeniedAuthorize(Roles="admin")]
    public ViewResult Index()
    {
        var product = db.Product.Include(a => a.Category);
        return View(product.ToList());
    }
}

Answer 2

您的Role.IsInRole使用情况不正确。那是什么的 [授权（Roles =“Admin”）]用于，无需调用它。

在您的代码中，您没有在任何地方设置角色。如果要进行自定义角色管理，可以使用自己的角色提供程序或将它们存储在身份验证令牌中，如下所示：

http://www.codeproject.com/Articles/36836/Forms-Authentication-and-Role-based-Authorization 请注意以下部分：


// Get the stored user-data, in this case, user roles
            if (!string.IsNullOrEmpty(ticket.UserData))
            {
                string userData = ticket.UserData;
                string[] roles = userData.Split(',');
                //Roles were put in the UserData property in the authentication ticket
                //while creating it
                HttpContext.Current.User = 
                  new System.Security.Principal.GenericPrincipal(id, roles);
            }
        }

然而，这里更简单的方法是使用asp.net中的内置成员资格。使用“互联网应用程序”模板创建一个新的mvc项目，这将全部为您设置。在visual studio中，单击解决方案资源管理器上方的“asp.net配置”图标。您可以在此管理角色并分配角色。

MVC 3授权自定义角色

2 个答案: