C# ';不为类型'提供服务;Identity.UserManager`1[ProjectName.ApplicationUser]';已注册。当容器被销毁时可注册)和#x27;
我正在尝试向我的项目添加一些角色和用户。我使用的是ASP.NET核心版本3.1。现在,我在我的创业课程中尝试了这一点:C# ';不为类型'提供服务;Identity.UserManager`1[ProjectName.ApplicationUser]';已注册。当容器被销毁时可注册)和#x27;,c#,asp.net-core,authentication,identity,roles,C#,Asp.net Core,Authentication,Identity,Roles,我正在尝试向我的项目添加一些角色和用户。我使用的是ASP.NET核心版本3.1。现在,我在我的创业课程中尝试了这一点: private async Task CreateRoles(IServiceProvider serviceProvider) { //initializing custom roles var RoleManager = serviceProvider.GetRequiredService<RoleM
private async Task CreateRoles(IServiceProvider serviceProvider)
{
//initializing custom roles
var RoleManager = serviceProvider.GetRequiredService<RoleManager<IdentityRole>>();
var UserManager = serviceProvider.GetRequiredService<UserManager<ApplicationUser>>();
string[] roleNames = { "Admin", "Operacional"};
IdentityResult roleResult;
foreach (var roleName in roleNames)
{
var roleExist = await RoleManager.RoleExistsAsync(roleName);
// ensure that the role does not exist
if (!roleExist)
{
//create the roles and seed them to the database:
roleResult = await RoleManager.CreateAsync(new IdentityRole(roleName));
}
}
// find the user with the admin email
var _user = await UserManager.FindByEmailAsync("admin@gmail.com");
// check if the user exists
if (_user == null)
{
//Here you could create the super admin who will maintain the web app
var poweruser = new ApplicationUser
{
UserName = "Admin",
Email = "admin@gmail.com",
};
string adminPassword = "Abc*123";
var createPowerUser = await UserManager.CreateAsync(poweruser, adminPassword);
if (createPowerUser.Succeeded)
{
//here we tie the new user to the role
await UserManager.AddToRoleAsync(poweruser, "Admin");
}
}
}
专用异步任务CreateRoles(IServiceProvider服务提供者)
{
//初始化自定义角色
var rolemager=serviceProvider.GetRequiredService();
var UserManager=serviceProvider.GetRequiredService();
字符串[]roleNames={“Admin”,“Operacional”};
识别结果角色结果;
foreach(roleName中的变量roleName)
{
var roleExist=wait rolemager.RoleExistsAsync(roleName);
//确保该角色不存在
如果(!roleExist)
{
//创建角色并将其种子植入数据库:
roleResult=await RoleManager.CreateAsync(新的IdentityRole(roleName));
}
}
//使用管理员电子邮件查找用户
var\u user=await UserManager.findbyemailsync(“admin@gmail.com");
//检查用户是否存在
如果(_user==null)
{
//在这里,你可以创建超级管理员谁将维护web应用程序
var poweruser=新应用程序用户
{
UserName=“Admin”,
电子邮件=”admin@gmail.com",
};
字符串adminPassword=“Abc*123”;
var createPowerUser=await UserManager.CreateAsync(poweruser,adminPassword);
如果(createPowerUser.successed)
{
//这里,我们将新用户绑定到角色
wait UserManager.AddToRoleAsync(poweruser,“Admin”);
}
}
}
及
public void配置(IApplicationBuilder应用程序、IWebHostEnvironment环境、IServiceProvider服务提供商)
{
if(env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
}
其他的
{
app.UseExceptionHandler(“/Home/Error”);
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseCookiePolicy();
app.UseAuthentication();
//信号机
//字符串caminho=configuration[“应用设置:服务商”]+“/myHub”;
字符串caminho=Configuration[“应用设置:服务商”]+“/myHub”;
//MapHub(卡米尼奥);
//app.usesigner(路由=>
//{
//路线:MapHub(卡米尼奥);
//});
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(端点=>
{
endpoints.MapHub(“/myHub”);
endpoints.MapControllerRoute(
名称:“默认”,
模式:“{controller=Home}/{action=Index}/{id?}”);
endpoints.MapRazorPages();
});
CreateRoles(serviceProvider).Wait();
}
当我运行该项目时,它在CreateRoles(serviceProvider)中给出错误“System.AggregateException:'没有类型为'Microsoft.AspNetCore.Identity.UserManager`1[ProjectName.ApplicationUser]'的服务已注册。当容器被销毁时可启用)”。Wait();
为什么会发生这种情况?尝试添加
服务。AddDefaultIdentity。这是否回答了您的问题?请共享startup.cs ConfigureServices方法,好吗?您似乎使用了错误的applicationuser或identityuser型号。
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IServiceProvider serviceProvider)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseCookiePolicy();
app.UseAuthentication();
//SIGNAL R
//String caminho = configuration["AppSettings:Servidor"] + "/myHub";
String caminho = Configuration["AppSettings:Servidor"] + "/myHub";
//endpoints.MapHub<MyHub>(caminho);
//app.UseSignalR(route =>
//{
// route.MapHub<MyHub>(caminho);
//});
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapHub<MyHub>("/myHub");
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
endpoints.MapRazorPages();
});
CreateRoles(serviceProvider).Wait();
}