带有 Sendgrid 的 ASP.NET Core 2 EmailSender 异常

Question

我正在尝试在Angular project template with ASP.NET Core 中实现 SendGrid。

我正在使用这个例子：Account confirmation and password recovery in ASP.NET Core

不幸的是，我总是收到此错误（状态：500）：

System.InvalidOperationException：尝试激活“MyWebApp.Controllers.AuthenticationController”时无法解析“MyWebApp.Extensions.EmailSender”类型的服务

这里是控制器：

[HttpPost]
public async Task<IActionResult> Register([FromBody]RegistrationViewModel model)
{
    if (!ModelState.IsValid)
    {
        return BadRequest(ModelState);
    }

    var userIdentity = _mapper.Map<AppUser>(model);
    var result = await _userManager.CreateAsync(userIdentity, model.Password);

    if (!result.Succeeded)
        return new BadRequestObjectResult(Errors.AddErrorsToModelState(result, ModelState));

    //Enable account confirmation
    var code = await _userManager.GenerateEmailConfirmationTokenAsync(userIdentity);
    var callbackUrl = Url.EmailConfirmationLink(userIdentity.Id, code, Request.Scheme);
    await _emailSender.SendEmailConfirmationAsync(model.Email, callbackUrl);

    //await _appDbContext.SaveChangesAsync();

    return new OkObjectResult("Account created");
}

还有电子邮件发件人：

public class EmailSender : IEmailSender
{
    public EmailSender(IOptions<AuthMessageSenderOptions> optionsAccessor)
    {
        Options = optionsAccessor.Value;
    }

    public AuthMessageSenderOptions Options { get; } //set only via Secret Manager

    public Task SendEmailAsync(string email, string subject, string message)
    {
        return Execute(Options.SendGridKey, subject, message, email);
    }

    public Task Execute(string apiKey, string subject, string message, string email)
    {
        var client = new SendGridClient(apiKey);
        var msg = new SendGridMessage()
        {
            From = new EmailAddress(<email-address>, <name>),
            Subject = subject,
            PlainTextContent = message,
            HtmlContent = message
        };
        msg.AddTo(new EmailAddress(email));
        return client.SendEmailAsync(msg);
    }
}

我尝试直接在代码中编写apiKey，但结果相同。 我已经在数据库中成功添加了一个用户，但是没有 SendGrid。

Answer 1

确保服务及其抽象在服务集合中注册，以便服务提供者知道如何解决它们

Startup.ConfigureServices

services.AddSingleton<IEmailSender, EmailSender>();

services.Configure<AuthMessageSenderOptions>(Configuration);