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我有一个启用了身份的 asp.net core 2.1 项目，但是在对种子用户进行某些更改后，我遇到了一些问题。
点击注册为新用户时出现的错误是
InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Identity.UI.Services.IEmailSender' while attempting to activate 'namespace.Website.Main.Areas.Identity.Pages.Account.RegisterModel'.
在 Register.cshtml.cs 类中，我看到注入(inject)了 IEmailSender，但我没有对此进行任何更改，无法理解为什么会发生此错误？请帮忙
启动.cs
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.Configure<CookiePolicyOptions>(options =>
{
// This lambda determines whether user consent for non-essential cookies is needed for a given request.
options.CheckConsentNeeded = context => true;
options.MinimumSameSitePolicy = SameSiteMode.None;
});
services.AddIdentity<IdentityUser, IdentityRole>()
.AddEntityFrameworkStores<ApplicationDbContext>();
services.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlServer(
Configuration.GetConnectionString("DefaultConnection")));
services.AddHttpClient();
services.AddHttpClient<IExceptionServiceClient, ExceptionServiceClient>();
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
}
}
角色配置
public static class RolesConfig
{
public static async Task InitialiseAsync(ApplicationDbContext context, IServiceProvider serviceProvider)
{
var roleManager = serviceProvider.GetRequiredService<RoleManager<IdentityRole>>();
string[] roleNames = { "Admin", "Report", "Search" };
foreach (var roleName in roleNames)
{
var roleExist = await roleManager.RoleExistsAsync(roleName);
if (!roleExist)
await roleManager.CreateAsync(new IdentityRole(roleName));
}
}
}
注册.cshtml.cs
public class RegisterModel : PageModel
{
private readonly SignInManager<IdentityUser> _signInManager;
private readonly UserManager<IdentityUser> _userManager;
private readonly ILogger<RegisterModel> _logger;
private readonly IEmailSender _emailSender;
public RegisterModel(
UserManager<IdentityUser> userManager,
SignInManager<IdentityUser> signInManager,
ILogger<RegisterModel> logger,
IEmailSender emailSender)
{
_userManager = userManager;
_signInManager = signInManager;
_logger = logger;
_emailSender = emailSender;
}
[BindProperty]
public InputModel Input { get; set; }
public string ReturnUrl { get; set; }
public class InputModel
{
[Required]
[EmailAddress]
[Display(Name = "Email")]
public string Email { get; set; }
[Required]
[StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
[DataType(DataType.Password)]
[Display(Name = "Password")]
public string Password { get; set; }
[DataType(DataType.Password)]
[Display(Name = "Confirm password")]
[Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
public string ConfirmPassword { get; set; }
}
public void OnGet(string returnUrl = null)
{
ReturnUrl = returnUrl;
}
public async Task<IActionResult> OnPostAsync(string returnUrl = null)
{
returnUrl = returnUrl ?? Url.Content("~/");
if (ModelState.IsValid)
{
var user = new IdentityUser { UserName = Input.Email, Email = Input.Email };
var result = await _userManager.CreateAsync(user, Input.Password);
if (result.Succeeded)
{
_logger.LogInformation("User created a new account with password.");
var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
var callbackUrl = Url.Page(
"/Account/ConfirmEmail",
pageHandler: null,
values: new { userId = user.Id, code = code },
protocol: Request.Scheme);
await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
$"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");
await _signInManager.SignInAsync(user, isPersistent: false);
return LocalRedirect(returnUrl);
}
foreach (var error in result.Errors)
{
ModelState.AddModelError(string.Empty, error.Description);
}
}
// If we got this far, something failed, redisplay form
return Page();
}
}
非常感谢任何帮助!谢谢