asp.net-core - 无法解析 ASP.Net Core 2.0 类型 Microsoft.AspNetCore.Identity.RoleManager 的服务

Question

如何在 ASP.Net Core 2.0 中注入(inject) RoleManager？

我收到以下错误:

Unable to resolve service for type Microsoft.AspNetCore.Identity.RoleManager for ASP.Net Core 2.0

我有以下代码:

  // add identity
  var builder = services.AddIdentityCore<AppUser>(o =>
  {
    // configure identity options
    o.Password.RequireDigit = false;
    o.Password.RequireLowercase = false;
    o.Password.RequireUppercase = false;
    o.Password.RequireNonAlphanumeric = false;
    o.Password.RequiredLength = 6;
  });
  builder = new IdentityBuilder(builder.UserType, typeof(AppRole), builder.Services);
  builder.AddSignInManager<SignInManager<AppUser>>();

AppUser 和 AppRole 分别派生自 IdentityUser 和 IdentityRole。

Answer 1

我不确定您为什么使用AddIdentityCore()。您是否尝试过传统的AddIdentity():

services.AddIdentity<AppUser, AppRole>(options =>
    {
        ... 
    });