注入RoleManager会导致错误 [英] Injecting RoleManager results in error

问题描述

首先，我的问题类似于此 SO链接，但不相同

First things first, my issue is similar to this SO link, but not the same

我正在查看Microsoft的Identity示例。我仅通过用户身份验证启动了它，并且起作用了。我删除了数据库，因为我想先使用数据库。现在，我正在尝试合并角色。

I am going through the Identity sample from microsoft. I started it with only user authentication and it worked. I removed the DB because I want to use Database first. Now I am trying to incorporate Roles.

我的设置是针对用户（没有角色的作品）和角色（没有作品）的：

My setup is like this for user (works without role) and role (didn't work):

我的数据库实体是这样设置的：

My DB entities are setup as such:

public class ApplicationDbContext : IdentityDbContext<ApplicationUser, IdentityRole<int>, int>
{
    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
        : base(options)
    {
    }

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);

        builder.Entity<ApplicationUser>(e =>
        {
            e.ToTable("User").HasKey(x => x.Id);
            e.Property(x => x.Id).HasColumnName("UserId");
        });

        builder.Entity<IdentityRole<int>>(e =>
        {
            e.ToTable("Role").HasKey(x => x.Id);
            e.Property(x => x.Id).HasColumnName("RoleId");
        });

和我的上下文，用户设置（我想继续使用原始的IdentityRole）

and my context, user setup (I want to keep using the original IdentityRole)

public class ApplicationDbContext : IdentityDbContext<ApplicationUser, IdentityRole<int>, int>
{
}
public class ApplicationUser : IdentityUser<int>
{
}

在ConfigureServices中：

in ConfigureServices:

services.AddIdentity<ApplicationUser, IdentityRole<int>>()
    .AddEntityFrameworkStores<ApplicationDbContext, int>()
    .AddDefaultTokenProviders();

在AccountController中，我尝试过：

in AccountController, I tried this:

[Authorize]
public class AccountController : Controller
{
    private readonly UserManager<ApplicationUser> _userManager;
    private readonly RoleManager<IdentityRole> _roleManager;
    private readonly SignInManager<ApplicationUser> _signInManager;
    private readonly IEmailSender _emailSender;
    private readonly ISmsSender _smsSender;
    private readonly ILogger _logger;

    public AccountController(
        UserManager<ApplicationUser> userManager, 
        RoleManager<IdentityRole> roleManager,
        SignInManager<ApplicationUser> signInManager,
        IEmailSender emailSender,
        ISmsSender smsSender,
        ILoggerFactory loggerFactory)
    {
        _userManager = userManager;
        _roleManager = roleManager;
        _signInManager = signInManager;
        _emailSender = emailSender;
        _smsSender = smsSender;
        _logger = loggerFactory.CreateLogger<AccountController>();
    }

该应用仍在浏览器中加载，它记得我之前已经登录过尝试注销，例如，出现此错误：

The app still load on the browser and it remembers that I've logged in before but when I try to logout for example, I get this error:

InvalidOperationException：无法解析
类型的服务'Microsoft.AspNetCore.Identity.RoleManager` 1 [MyProj.Web.Models.MyViewModels.ApplicationRole]'
，同时尝试激活
'MyProj.Web.Controllers.AccountController'。

InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Identity.RoleManager`1[MyProj.Web.Models.MyViewModels.ApplicationRole]' while attempting to activate 'MyProj.Web.Controllers.AccountController'.

推荐答案

将 RoleManager< IdentityRole> 替换为 RoleManager< IdentityRole< int>> ; ，它应该可以工作。

Replace RoleManager<IdentityRole> by RoleManager<IdentityRole<int>> and it should work.

这篇关于注入RoleManager会导致错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！