尝试将RoleManager注入ASP.NET Core 2.2控制器时出现错误

Posted 2023-02-26

我正在尝试将RoleManager注入我的控制器，但出现此错误：

InvalidOperationException：在尝试激活'StoreProject.Controllers.ProductController'时，无法解析类型为'Microsoft.AspNetCore.Identity.RoleManager`1 [StoreProject.Models.User]'的服务。

我的Startup代码：

public void ConfigureServices(IServiceCollection services)

    services.AddMvc();
    services.AddMemoryCache();
    services.AddSession();
    services.AddTransient<IStoreRepository, StoreRepository>();

    services.AddIdentity<User,IdentityRole<long>>(options =>
        
            options.User.RequireUniqueEmail = true;
            options.Password.RequireNonAlphanumeric = false;
            options.Password.RequireUppercase = false;
        ).AddEntityFrameworkStores<StoreContext>();

    services.AddDbContext<StoreContext>(options =>
            options.UseSqlServer("Server=LAPTOP-14M18EPM\\RONSQL;Database=projectDB;Trusted_Connection=True"));

我的控制器：

public class AccountController : Controller

    private readonly SignInManager<User> _signInManager;
    private readonly UserManager<User> _userManager;
    private readonly RoleManager<User> _roleManager;

    IStoreRepository _repository;
    private readonly IHostingEnvironment _env;

    public AccountController(SignInManager<User> signInManager,
        UserManager<User> userManager,
        RoleManager<User> roleManager,
        IStoreRepository storeRepository,
        IHostingEnvironment env)
    
        _signInManager = signInManager;
        _userManager = userManager;
        _roleManager = roleManager;
        _repository = storeRepository;
        _env = env;
    

问题出在哪里？

答案

您的问题很可能是这个：

RoleManager<User> roleManager