问题描述
我在 Godaddy 托管的 Asp.net core 2.0 Razor 页面网站上有一个简单的联系表。在本地主机上一切正常。部署网站时，如果我单击提交按钮，我会收到错误 500“无法处理请求”。页面代码如下：
<form method="post">
<div class="row gtr-uniform gtr-50">
<div class="col-6 col-12-mobilep">
<input asp-for="Sendmail.FName" placeholder="First Name"/>
<span asp-validation-for="Sendmail.FName" style="color:red;"></span>
</div>
<div class="col-6 col-12-mobilep">
<input asp-for="Sendmail.LName" placeholder="Last Name" />
<span asp-validation-for="Sendmail.LName" style="color:red;"></span>
</div>
<div class="col-6 col-12-mobilep">
<input asp-for="Sendmail.PhoneNumber" placeholder="Phone Number" />
<span asp-validation-for="Sendmail.PhoneNumber" style="color:red;"></span>
</div>
<div class="col-12">
<select asp-for="Sendmail.BestTimetoCall">
<option value="">- Best Time To Call-</option>
<option value="Morning">Morning</option>
<option value="Afternoon">Afternoon</option>
<option value="Evening">Evening</option>
</select>
<span asp-validation-for="Sendmail.BestTimetoCall" style="color:red;"></span>
</div>
<div class="col-6 col-12-mobilep">
<input asp-for="Sendmail.EmailAddress" placeholder="Email" />
<span asp-validation-for="Sendmail.EmailAddress" style="color:red;"></span>
</div>
<div class="col-12">
<select asp-for="Sendmail.PreferredContactMethod">
<option value="">- Preferred Contact Method -</option>
<option value="Email">Email</option>
<option value="Phone">Phone Call</option>
</select>
<span asp-validation-for="Sendmail.PreferredContactMethod" style="color:red;"></span>
</div>
<div class="col-12">
<textarea asp-for="Sendmail.MessageBody" placeholder="Enter your message" rows="6"></textarea>
<span asp-validation-for="Sendmail.MessageBody" style="color:red;"></span>
</div>
<div class="col-12">
<ul class="actions">
<li><button asp-page-handler="ContactUs" class="primary" id="contactsubmitbutton">Submit</button></li>
<li>@ViewBag.Message</li>
</ul>
</div>
</div>
</form>
以下是 ContactUs 页面的控制器（删除了电子邮件和密码）：
public Email Sendmail { get; set; }
public async Task OnPost()
{
try
{
if (ModelState.IsValid)
{
//this is the email address you want the contact form to be sent to. example contactrequestform@thevillagementalhealthgroup.com
string To = "email@gmail.com";
//this is what the subject line of the email will say. use a subject line that will be easy to identify
string Subject = "New Contact Request From The Village Mental Health Group's Contact Us Form";
//this is the body of the email
string Body = Sendmail.Body;
MailMessage mm = new MailMessage();
//this is the to section of the email
mm.To.Add(To);
//this is the subject section of the email
mm.Subject = Subject;
//this is what the body of the email message will contain. Currently it has the input values from the contact form in a readable format
mm.Body = "You have a new message from your contact us form on TheVillageMentalHealthgroup.com. Their information is as follows: First Name: " + Sendmail.FName + " Last Name: " + Sendmail.LName + " Phone Number: " + Sendmail.PhoneNumber + " Best Time To Call: " + Sendmail.BestTimetoCall + " Email Address: " + Sendmail.EmailAddress + " Preferred contact Method: " + Sendmail.PreferredContactMethod + " Their message is as follows: " + Sendmail.MessageBody;
//this signifies if the email body is html format. if you change to yes you can format the email message with html mark up
mm.IsBodyHtml = false;
//this is where the email is being sent from. this should be set to the email address specific to the contact form so you will always automatically kNow it is a contact request from said website
mm.From = new MailAddress("email@gmail.com");
//this is the email providers smtp address
SmtpClient smtp = new SmtpClient("smtp.gmail.com");
smtp.Port = 587;
smtp.UseDefaultCredentials = true;
smtp.EnableSsl = true;
//these are user names and password for the email provider
smtp.Credentials = new System.Net.NetworkCredential("email@gmail.com","password");
await smtp.SendMailAsync(mm);
//this is the message displayed next to the submit button showing successful submission of of contact request
ViewData["Message"] = "Thank You. Your has been sent successfully.We will be in contact with as soon as we are available.";
}
else
{
//this is the message displayed if there is an issue submitting the form
ViewData["Message"] = "There is an issue with the Contact Form. Please contact us by phone or email.";
}
}
catch (Exception ex)
{
ViewData["Message"] = ex;
Response.Redirect("ContactFormError");
}
}
它在本地主机上运行良好，但一旦发布到服务器就不会提交电子邮件。任何帮助或建议将不胜感激。几天来，我一直在搜索、寻找并试图解决这个问题。
解决方法
好的，所以我想通了。首先，GoDaddy 不允许在其共享托管计划中使用外部服务器。因此，在更改为使用他们的 relay-hosting.secureserver.net smtp 服务器后，我仍然收到错误消息。我最终通过将 catch(Exception ex) 中捕获的视图数据传递到“联系我们”页面将异常错误发送到生产页面，以便我可以进行故障排除。我当时注意到它没有更新我的页面视图的内容。经过一些其他检查后，我发现在发布时，我的视图和模型没有更新。在多次尝试强制更改后，最终起作用的是将发布配置从发布更改为调试、上传，然后更改回发布并再次上传。从那里这是有效的代码 注意 如果从与电子邮件关联的 Godaddy 托管帐户托管，则不需要凭据。
public async Task OnPost()
{
try
{
if (ModelState.IsValid)
{
//this is the email address you want the contact form to be sent to. example email@email.com
string To = "destination@email.com";
//this is what the subject line of the email will say. use a subject line that will be easy to identify
string Subject = "New Contact Request From ...";
//this is the body of the email
string Body = Sendmail.Body;
MailMessage mm = new MailMessage();
//this is the to section of the email
mm.To.Add(To);
//this is the subject section of the email
mm.Subject = Subject;
//this is what the body of the email message will contain. Currently it has the input values from the contact form in a readable format
mm.Body = "You have a new message from your contact us form on yoursite.com. </br>" +
" Their information is as follows:" +
" </br> First Name: " + Sendmail.FName +
" </br> Last Name: " + Sendmail.LName +
" </br> Phone Number: " + Sendmail.PhoneNumber +
" </br> Best Time To Call: " + Sendmail.BestTimeToCall +
" </br> Email Address: " + Sendmail.EmailAddress +
" </br> Preferred contact Method: " + Sendmail.PreferredContactMethod +
" </br> Their message is as follows: " + Sendmail.MessageBody;
//this signifies if the email body is html format. if you change to yes you can format the email message with html mark up
mm.IsBodyHtml = true;
//this is where the email is being sent from. this should be set to the email address specific to the contact form so you will always automatically know it is a contact request from said website
mm.From = new MailAddress("godaddyhostedemail@domain.com");
//this is the email providers smtp address
SmtpClient smtp = new SmtpClient("relay-hosting.secureserver.net");
smtp.Port = 25;
smtp.UseDefaultCredentials = false;
smtp.EnableSsl = true;
await smtp.SendMailAsync(mm);
//this is the message displayed next to the submit button showing successful submission of of contact request
ViewData["Message"] = "Thank You. Your has been sent successfully. We will be in contact with as soon as we are available.";
}
else
{
//this is the message displayed if there is an issue submitting the form
ViewData["Message"] = "There is an issue with the Contact Form. Please contact us by phone or email.";
}
}
catch (Exception ex)
{
ViewData["Message"] = ex;
//Response.Redirect("ContactFormError");
}
}
以下是电子邮件的模型。它被命名为 Email.cs
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Threading.Tasks;
namespace YourNamespaceHere.Models
{
public class Email
{
public string To { get; set; }
public string From { get; set; }
public string Subject { get; set; }
public string Body { get; set; }
[Required(ErrorMessage ="Your first name is required."),MinLength(2),MaxLength(50),Display(Name = "First Name")]
public string FName { get; set; }
[Required(ErrorMessage = "Your last name is required."),Display(Name = "Last Name")]
public string LName { get; set; }
[Required(ErrorMessage ="Your phone number is required")]
[DataType(DataType.PhoneNumber)]
[Display(Name = "Phone Number")]
[RegularExpression(@"^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$",ErrorMessage = "Please enter a valid phone number. Must be all numbers no spaces or other characters.")]
public string PhoneNumber { get; set; }
[Required(ErrorMessage ="Please let us know the best time to contact you."),Display(Name = "Select the best time frame for us to contact you.")]
public string BestTimeToCall { get; set; }
[DataType(DataType.EmailAddress),Required(ErrorMessage ="A valid email address is required"),Display(Name = "Email Address")]
public string EmailAddress { get; set; }
[ Required(ErrorMessage ="Please let us know your required contact method"),Display(Name = "Select your preferred method for us to contact you.")]
public string PreferredContactMethod { get; set; }
[ Required(ErrorMessage ="Please check the box to prove you are human"),Display(Name = "Check to box to prove you are human")]
public bool Human { get; set; }
[Required(ErrorMessage ="Please let us know how we can assist you."),MinLength(4),MaxLength(500),Display(Name = "Enter your message here.")]
public string MessageBody { get; set; }
}
}