SendGrid 在发送电子邮件时抛出 InvalidApiRequestException

Question

发送电子邮件时，SendGrid 抛出 InvalidApiRequestException。

我正在使用此代码：

public Task SendEmailAsync(string email, string subject, string message)
{
    // Plug in your email service here to send an email.
    var myMessage = new SendGrid.SendGridMessage();
    myMessage.AddTo(email);
    myMessage.From = new MailAddress("varshney@shobhit.com", "Shobhit", System.Text.Encoding.Default);
    myMessage.Subject = subject;
    myMessage.Text = message;
    myMessage.Html = message;
    var credentials = new NetworkCredential(
        Options.SendGridUser,
        Options.SendGridKey);
    // Create a Web transport for sending email.
    var transportWeb = new SendGrid.Web(credentials);
    // Send the email.
    if (transportWeb != null)
    {
        return transportWeb.DeliverAsync(myMessage);
    }
    else
    {
        return Task.FromResult(0);
    }
}

堆栈跟踪是：

InvalidApiRequestException: Bad Request Check `Errors` for a list of errors returned by the API.
SendGrid.ErrorChecker.CheckForErrors(HttpResponseMessage response, Stream stream)
SendGrid.ErrorChecker.<CheckForErrorsAsync>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
SendGrid.Web.<DeliverAsync>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
MessageBoard.Controllers.AccountController.<Register>d__9.MoveNext() in AccountController.cs
                    await _emailSender.SendEmailAsync(model.Email, "Confirm your account",
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
Microsoft.AspNet.Mvc.Controllers.ControllerActionExecutor.<CastToObject>d__8`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
Microsoft.AspNet.Mvc.Controllers.ControllerActionInvoker.<InvokeActionAsync>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeActionFilterAsync>d__53.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeAsync>d__44.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNet.Mvc.Infrastructure.MvcRouteHandler.<RouteAsync>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNet.Routing.Template.TemplateRoute.<RouteAsync>d__27.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNet.Routing.RouteCollection.<RouteAsync>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNet.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNet.IISPlatformHandler.IISPlatformHandlerMiddleware.<Invoke>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNet.Diagnostics.Entity.MigrationsEndPointMiddleware.<Invoke>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNet.Diagnostics.Entity.DatabaseErrorPageMiddleware.<Invoke>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
Microsoft.AspNet.Diagnostics.Entity.DatabaseErrorPageMiddleware.<Invoke>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNet.Diagnostics.DeveloperExceptionPageMiddleware.<Invoke>d__7.MoveNext()

Answer 1

确保您使用的是 SendGrid C# 库版本 6.3.x 或更高版本。以前的库版本中存在错误。

Answer 2

对于您的凭据，您是否使用了您的 Sendgrid 用户名和密码？还是您的 API 密钥？从您的变量名称看来，您正在传递您的 API 密钥。尝试传递您的密码：

Options.SendGridUser Options.SendGridPassword

Answer 3

我遇到了同样的问题。在我的情况下，根本原因是电子邮件地址中有一些德语字符。要记录确切的错误，请尝试在 try/catch 块下方添加。

            try
            {
                // Create a Web transport for sending email.
                var transportWeb = new SendGrid.Web(credentials);
                // Send the email.
                if (transportWeb != null)
                {
                    return transportWeb.DeliverAsync(myMessage);
                }
            }
            catch (InvalidApiRequestException exception)
            {
                if (exception.Errors != null)
                {
                    foreach (var error in exception.Errors)
                    {
                        // Log error
                    }
                } 
            }

Answer 4

无需任何软件包即可轻松使用 sendgrid API（newtonsoft json 除外）。 在我的示例中，我使用模板；您可以使用内容来注释内容字段

1) 创建你的类

public class MailObject
    {
        public ICollection<MailPersonalizations> personalizations { get; set; }
        public Email from { get; set; }
        public string template_id { get; set; }
        //public ICollection<MailContent> content { get; set; }
    }

public class MailPersonalizations
    {
        public ICollection<Email> to { get; set; }
        public string subject { get; set; }
        public Dictionary<string, string> substitutions { get; set; }
    }

public class MailContent
    {
        public string type { get; set; }
        public string value { get; set; }
    }

public class Email
    {
        public string email { get; set; }
        public string name { get; set; }
    }

2) 创建您的 MailObject 并使用 HttpClient 发送它

public async Task SendEmailAsync(string email, string subject, string message, string url = "", string buttonText = "")
        {
            //Create a mail object
            var mailObject = new MailObject {
                personalizations = new List<MailPersonalizations>(),
                from = new Email { email = "no-reply@passion4it.be", name = "No-Reply Passion4IT" },
                template_id = "cc84680c-a569-428b-ab26-9618584bc9ae"
            };

            //create the mail personalization
            var personalization = new MailPersonalizations();
            personalization.to = new List<Email>();
            personalization.to.Add(new Email { email = email});
            personalization.subject = subject;
            //Substitutions
            personalization.substitutions = new Dictionary<string, string>();
            personalization.substitutions.Add("-url-", url);
            personalization.substitutions.Add("-title-", subject);
            personalization.substitutions.Add("-custtext-", message);
            personalization.substitutions.Add("-buttonText-", buttonText);

            mailObject.personalizations.Add(personalization); //Adding to the mail object

            //SEND EMAIL USING SENDGRID API
            using(var client = new HttpClient())
            {
                var jsonMail = JsonConvert.SerializeObject(mailObject);//convert object

                client.DefaultRequestHeaders.Accept.Clear(); //Clear headers
                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); //Add Accept type
                client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "YOUR API KEY"); //Add Authorization

                var response = await client.PostAsync("https://api.sendgrid.com/v3/mail/send", new StringContent(jsonMail, Encoding.UTF8, "application/json")); //Send the mail
            }

            return; //Closed
        }