自定义中间件处理角色权限种子数据

SeedData：

public static class SeedData
{
    /// <summary>
    /// 用户种子数据
    /// </summary>
    /// <param name="builder"></param>
    /// <returns></returns>
    public static IApplicationBuilder UseDataInitializer(this IApplicationBuilder builder)
    {
        using (var scope = builder.ApplicationServices.CreateScope())
        {
            var dbContext = scope.ServiceProvider.GetService<AppDbContext>();
            var userManager = scope.ServiceProvider.GetService<UserManager<ApplicationUser>>();
            Console.WriteLine("开始执行迁移数据库……");
            dbContext.Database.Migrate();
            Console.WriteLine("数据库迁移完成……");
            #region 初始化学生数据
            if (!dbContext.Students.Any())
            {
                Console.WriteLine("开始创建种子数据中……");
                dbContext.Students.Add(new Student
                {
                    Id = 1,
                    Name = "梁桐铭",
                    ClassName = ClassNameEnum.FirstGrade,
                    Email = "ltm@ddxc.org"
                });
                dbContext.Students.Add(new Student
                {
                    Id = 2,
                    Name = "角落的白板报",
                    ClassName = ClassNameEnum.GradeThree,
                    Email = "werltm@qq.com"
                });
            }
            #endregion
            #region 初始化用户
            var adminUser = dbContext.Users.FirstOrDefault(u => u.UserName == "ltm@ddxc.org");
            if (adminUser == null)
            {
                var user = new ApplicationUser
                {
                    UserName = "ltm@ddxc.org",
                    Email = "ltm@ddxc.org",
                    EmailConfirmed = true,
                    City = "成都"
                };
                var identityResult = userManager.CreateAsync(user, "bb123456").GetAwaiter().GetResult();
                var role = dbContext.Roles.Add(new IdentityRole
                {
                    Name = "Admin",
                    NormalizedName = "ADMIN"
                });
                dbContext.SaveChanges();
                dbContext.UserRoles.Add(new IdentityUserRole<string>
                {
                    RoleId = role.Entity.Id,
                    UserId = user.Id
                });
                var userClaims = new List<IdentityUserClaim<string>>
                {
                    new IdentityUserClaim<string>
                    {
                        UserId = user.Id, ClaimType = "Create Role", ClaimValue = "Create Role"
                    },
                    new IdentityUserClaim<string>
                    {
                        UserId = user.Id, ClaimType = "Edit Role", ClaimValue = "Edit Role"
                    },
                    new IdentityUserClaim<string>
                    {
                        UserId = user.Id, ClaimType = "Delete Role", ClaimValue = "Delete Role"
                    },
                    new IdentityUserClaim<string>
                    {
                        UserId = user.Id, ClaimType = "Edit Student", ClaimValue = "Edit Student"
                    }
                };
                dbContext.UserClaims.AddRange(userClaims);
                dbContext.SaveChanges();
                #endregion
            }
            else
            {
                Console.WriteLine("无需创建种子数据……");
            }
        }
        return builder;
    }
}

写好 SeedData 后，记得在 Startup 中进行调用：

并屏蔽 modelBuilder.Seed 的使用：