Question

我已经在Identity中实现了Asp.Net.Core MVC 3，因为我们已经有了要使用的数据库表。在调用下面的方法时，我得到了错误，它们都在同一方法的UserManager中调用。在查看此方法的源代码时，这是因为Store变量为null。但是我不太确定如何确保它不为空。我在网上查看了各种解决方案，但没有一个能解决我的问题。

我的解决方案正在使用SignInManager输入密码，但是我无法通过它来传递“角色”错误。

ConfigureServices 方法

public void ConfigureServices(IServiceCollection services)
{           
    services.AddControllersWithViews();
    services.AddMvc(options =>
    {
        var policy = new AuthorizationPolicyBuilder().RequireAuthenticatedUser().Build();
        options.Filters.Add(new AuthorizeFilter(policy));
        options.EnableEndpointRouting = false;
    });
    services.AddDbContext<EntitiesModel>(options => options.UseSqlServer(
            Configuration["Data:ConnectionStrings:XXXXXXXXXXXXX"]));
    services.AddIdentity<UserViewModel, UserRoleViewModel>().AddDefaultTokenProviders();
    services.AddTransient<IUserStore<UserViewModel>, UserStore>();
    services.AddTransient<IRoleStore<UserRoleViewModel>, RoleStore>();
    services.ConfigureApplicationCookie(options =>
    {
        options.Cookie.HttpOnly = true;             
        options.LoginPath = "/Login";
        options.LogoutPath = "/Logout";
    });         
}

UserStore 类

public class UserStore : IUserStore<UserViewModel>, IUserPasswordStore<UserViewModel>, IUserEmailStore<UserViewModel>, IUserRoleStore<UserRoleViewModel>
{ 
....

RoleStore 类

public class RoleStore : IRoleStore<UserRoleViewModel>,IUserRoleStore<UserRoleViewModel>
{
....

UserViewModel 类

public class UserViewModel 
{
    [Key, Required]
    public int Id { get; set; }
    [Required, MaxLength(128)]
    public string UserName { get; set; }
    [Required, MaxLength(1024)]
    public string Password { get; set; }        
    public virtual ICollection<UserRoleViewModel> UserRoles { get; set; }
}

UserRoleViewRoleModel 类

public class UserRoleViewModel 
{    
    [Key, Required]
    public int Id { get; set; }
    [Required, ForeignKey(nameof(User))]
    public int UserId { get; set; }
    [Required, ForeignKey(nameof(Role))]
    public int RoleId { get; set; }
    public virtual RoleViewModel Role { get; set; }
    public virtual UserViewModel User { get; set; }
}

RoleViewModel 类

public class RoleViewModel 
{   
    [Key,Required]
    public int RoleId  { get; set; }
    [Required]
    public string RoleName { get; set; }
    public virtual  ICollection<UserRoleViewModel> UserRoles { get; set; }
}

**Calling Code**
//this works
var result = await signInManager.PasswordSignInAsync(user.UserName, user.Password, true, false);
//this fails
var test = await userManager.IsInRoleAsync(user, "Management");
//this fails
var roles = await userManager.GetRolesAsync(user);

错误

NotSupportedException：存储未实现IUserRoleStore。 Microsoft.AspNetCore.Identity.UserManager.GetUserRoleStore（）

如果我的结构方式不正确，请原谅我，但我是来自ASP.Net Web窗体的新手。

Answer 1

不确定，但似乎您忘记了在start up.cs文件中添加角色

    services.AddDefaultIdentity<UserViewModel>()
.AddRoles<IdentityRole>()
.AddEntityFrameworkStores<DbContext>();

请在下面的链接中找到更多参考。 http://qaru.site/questions/16512353/store-does-not-implement-iuserrolestoretuser-aspnet-core-21-identity

Answer 2

删除下面的行：

services.AddTransient，UserStore>（）;

存储未实现IUserRoleStore <TUser> UserManager <TUser> .GetUserRoleStore（）ASP.NET Core MVC 3

2 个答案: