ASP.NET Core 如何在 JavaScript 中将 IEnumerable 字符串作为变量传递

Question

我想使用 MimeKit 将收件人邮箱地址作为参数传递给多个地址以发送消息。

如果我编辑控制器操作以包含一个包含 2 个电子邮件地址的字符串：

var message = new Message(new string[] { "address1@gmail.com","address2@gmail.com" }, eMailSubject, eMailContent, null);

邮件将发送给两个收件人 address1@gmail.com 和 address2@gmail.com。

但是，如果我尝试从函数 email_valueChanged(e) 传递参数字符串 eMailTo，我会收到错误消息：

$exception {“Invalid addr-spec token at offset 0”}
x "\"address1@gmail.com\",\"address2@gmail.com\""

有没有办法在 javascript 中为 IActionResult SendMessage 传递 eMailTo 参数？请注意，to 是一个 IEnumerable 字符串：

public Message(IEnumerable<string> to, string subject, string content, IFormFileCollection attachments)

我也曾尝试将 eMailTo 参数作为数组传递，但没有成功。

详情如下：

从弹出窗口发送电子邮件的函数：

function showInfo(data) { location.href = '@Url.Action("SendMessage", "EMail")?eMailTo=' + eMailToAddress +'&eMailSubject=' + eMailSubject + '&eMailContent=' + eMailContent;}

<script>
    let eMailToAddress = -1;
    let eMailSubject = -1;
    let eMailContent = -1;

    function email_valueChanged(e) {
        eMailToAddress = '"address1@gmail.com","address2@gmail.com"';
        console.log("eMailToAddress = " + eMailToAddress);
    }
</script>

EMailController.cs

using EmailService;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace CPSPMO.Controllers
{
    public class EmailController : Controller
    {
        private readonly IEmailSender _emailSender;
        public EmailController(IEmailSender emailSender)
        {
            _emailSender = emailSender;   
        }

        public IActionResult SendMessage(string eMailTo, string eMailSubject, string eMailContent)
        {
            var message = new Message(new string[] { eMailTo }, eMailSubject, eMailContent, null);
            _emailSender.SendEmailAsync(message);

            return NoContent();
        }

    }
}

EMailConfiguration.cs

namespace EmailService
{
    public class EmailConfiguration
    {
        public string From { get; set; }   
        public string SmtpServer { get; set; }
        public int Port { get; set; }
        public string Username { get; set; }
        public string Password { get; set; }
    }
}

EMailSender.cs

using MailKit.Net.Smtp;
using MimeKit;
using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;

namespace EmailService
{
    public class EmailSender : IEmailSender
    {
        private readonly EmailConfiguration _emailConfig;
        public EmailSender(EmailConfiguration emailConfig)
        {
            _emailConfig = emailConfig; 
        }
        public void SendEmail(Message message)
        {
            var emailMessage = CreateEmailMessage(message);
            Send(emailMessage);
        }

        public async Task SendEmailAsync(Message message)
        {
            var mailMessage = CreateEmailMessage(message);
            await SendAsync(mailMessage);
        }
        private MimeMessage CreateEmailMessage(Message message)
        {
            var emailMessage = new MimeMessage();
            emailMessage.From.Add(new MailboxAddress(_emailConfig.From));
            emailMessage.To.AddRange(message.To);
            emailMessage.Subject = message.Subject;

            var bodyBuilder = new BodyBuilder { HtmlBody = String.Format("<h2 style='color:red'>{0}<h2>",message.Content) };
            if(message.Attachments != null && message.Attachments.Any())
            {
                byte[] fileBytes;
                foreach (var attachment in message.Attachments)
                {
                    using (var ms = new MemoryStream())
                    {
                        attachment.CopyTo(ms);
                        fileBytes = ms.ToArray();
                    }

                    bodyBuilder.Attachments.Add(attachment.FileName, fileBytes, ContentType.Parse(attachment.ContentType));
                }
            }

            emailMessage.Body = bodyBuilder.ToMessageBody();

            return emailMessage;    
        }


        private async Task SendAsync(MimeMessage mailMessage)
        {
            using (var client = new SmtpClient())
            {
                try
                {
                    await client.ConnectAsync(_emailConfig.SmtpServer, _emailConfig.Port, true);
                    await client.AuthenticateAsync(_emailConfig.Username, _emailConfig.Password);

                    await client.SendAsync(mailMessage);
                }
                catch
                {
                    throw;
                }
                finally
                {
                    await client.DisconnectAsync(true);
                    client.Dispose();
                }
            }
        }
    }
}

IMailSender.cs
using System.Threading.Tasks;

namespace EmailService
{
    public interface IEmailSender   
    {
        void SendEmail(Message message);
        Task SendEmailAsync(Message message);
    }
}

Message.cs
using Microsoft.AspNetCore.Http;
using MimeKit;
using System.Collections.Generic;
using System.Linq;


namespace EmailService
{
    public class Message
    {
        public List<MailboxAddress> To { get; set; }
        public string Subject { get; set; }
        public string Content { get; set; }
        public IFormFileCollection Attachments { get; set; }
        public Message(IEnumerable<string> to, string subject, string content, IFormFileCollection attachments)
        {
            To = new List<MailboxAddress>();

            To.AddRange(to.Select(x => new MailboxAddress(x)));
            Subject = subject;
            Content = content;
            Attachments = attachments;
        }
    }
}

Answer 1

请尝试使用string[] eMailTo，它应该对你有用。

 public string TestArray(string[] eMailTo,string eMailSubject)
 {
     StringBuilder msg = new StringBuilder();
     for (int i = 0; i < eMailTo.Length; i++)
     {
         msg.Append(eMailTo[i]);
         msg.Append(",");
     }
            
     return msg.Append(eMailSubject).ToString();
 }

测试Link:

https://localhost:44374/home/TestArray?eMailTo=address1@gmail.com&eMailTo=address2@gmail.com&eMailTo=address3@gmail.com&eMailSubject=testdata

测试结果：

ASP.NET Core 如何在 JavaScript 中将 IEnumerable 字符串作为变量传递

ASP.NET Core How to pass an IEnumerable String as a Variable in JavaScript

javascript

asp.net

asp.net-core

email

mimekit