我對聯系表有疑問。 在本地主機上工作。 當嘗試通過提交按鈕發布它時部署它的錯誤

Question

我在 Godaddy 托管的 Asp.net 核心 2.0 Razor 頁面網站上有一個簡單的聯系表格。 在本地主機上一切正常。 部署網站后，如果單擊提交按鈕，則會收到錯誤 500“無法處理請求”。 下面是頁面的代碼：

<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 頁面的 controller（已刪除電子郵件和密碼）：

 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");
            }

        }

它在本地主機上工作正常，但一旦發布到服務器就不會提交 email。 任何幫助或建議將不勝感激。 幾天來，我一直在尋找和尋找並試圖解決這個問題。

Answer 1

好的，所以我想通了。 首先，GoDaddy 不允許在其共享托管計划中使用外部服務器。 因此，在更改為使用他們的 relay-hosting.secureserver.net smtp 服務器后，我仍然收到錯誤消息。 我最終通過將 catch(Exception ex) 中捕獲的視圖數據傳遞給“聯系我們”頁面，將異常錯誤發送到生產頁面，這樣我就可以排除故障了。 我注意到當時它沒有更新我的頁面視圖的內容。 經過其他一些檢查后，我發現在發布時，我的視圖和模型沒有更新。 在多次嘗試強制它更改之后，最終的工作是將發布配置從發布更改為調試、上傳，然后再更改回發布並再次上傳。 從那里開始，如果從與 email 關聯的 Godaddy 托管帳戶進行托管，則不需要使用注釋憑據的代碼。

        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");
            }

        }

下面是 Email 的 model。 它被命名為 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."), MinLength(2), MaxLength(50), 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; }
    }
}