<develop>:(ShopERP 端)<无> 增加 发送邮件的公共类库。

CoreCms.Net.Model/ViewModels/Email/MailConfiguration.cs

@@ -16,7 +16,7 @@ namespace CoreCms.Net.Model.ViewModels.Email
         public bool EnableSsl { get; set; } = true;
         public string FromAddress { get; set; } = string.Empty;
         public int Timeout { get; set; } = 10000; // 10 seconds
-        public bool UseDefaultCredentials { get; set; } = true;
+        public bool UseDefaultCredentials { get; set; } = false;//禁止使用系统凭据
     }
 
     /// <summary>
@@ -31,13 +31,13 @@ namespace CoreCms.Net.Model.ViewModels.Email
 
     public class MailMessageModel
     {
-        public List<string> ToAddresses { get; set; } = new List<string>();
-        public List<string>? CcAddresses { get; set; }
-        public List<string>? BccAddresses { get; set; }
-        public string? Subject { get; set; }
-        public string? Body { get; set; }
-        public bool IsBodyHtml { get; set; } = true;
-        public List<MailAttachment>? Attachments { get; set; }
+        public List<string> ToAddresses { get; set; } = new List<string>();//收件人
+        public List<string>? CcAddresses { get; set; }//抄送人
+        public List<string>? BccAddresses { get; set; }//密送人
+        public string? Subject { get; set; }//邮件主体
+        public string? Body { get; set; }//邮件正文
+        public bool IsBodyHtml { get; set; } = true;//是否为 html
+        public List<MailAttachment>? Attachments { get; set; }//附件
         public Encoding? Encoding { get; set; } = Encoding.UTF8;
     }
 

CoreCms.Net.Utility/CoreCms.Net.Utility.csproj

@@ -6,6 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="Consul" Version="1.7.14.7" />
+    <PackageReference Include="MailKit" Version="4.13.0" />
     <PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="8.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />

CoreCms.Net.Utility/Helper/EmailSenderHelper.cs

 using CoreCms.Net.Model.ViewModels.Email;
 using Microsoft.Extensions.Logging;
+using MimeKit;
+using MimeKit.Text;
 using System;
 using System.Collections.Generic;
 using System.IO;
@@ -9,6 +11,7 @@ using System.Net.Mail;
 using System.Net.Mime;
 using System.Text;
 using System.Threading.Tasks;
+using ContentDisposition = MimeKit.ContentDisposition;
 
 namespace CoreCms.Net.Utility.Helper
 {
@@ -36,85 +39,113 @@ namespace CoreCms.Net.Utility.Helper
                 throw new ArgumentNullException(nameof(_config.Password));
         }
 
-        public async Task SendEmailAsync(MailMessageModel message)
+        #region 异步发送 EMail 信息
+        /// <summary>
+        /// 异步发送 EMail 信息
+        /// </summary>
+        /// <param name="model"></param>
+        /// <returns></returns>
+        public async Task SendWithMailKitAsync(MailMessageModel model)
         {
-            if (message == null)
-                throw new ArgumentNullException(nameof(message));
+            var message = new MimeMessage();
 
-            if (!message.ToAddresses.Any())
-                throw new InvalidOperationException("No recipients specified");
+            // 设置发件人
+            message.From.Add(new MailboxAddress("Sender", _config.FromAddress));
 
-            using var smtpClient = CreateSmtpClient();
-            using var mailMessage = CreateMailMessage(message);
+            // 添加收件人
+            AddRecipients(message.To, model.ToAddresses);
 
-            try
+            // 添加抄送
+            if (model.CcAddresses?.Count > 0)
             {
-                await smtpClient.SendMailAsync(mailMessage);
-                _logger?.LogInformation($"Email sent to {string.Join(", ", message.ToAddresses)}");
+                AddRecipients(message.Cc, model.CcAddresses);
             }
-            catch (SmtpException ex)
-            {
-                _logger?.LogError(ex, $"SMTP error sending email: {ex.Message}");
-            }
-            catch (Exception ex)
+
+            // 添加密送
+            if (model.BccAddresses?.Count > 0)
             {
-                _logger?.LogError(ex, $"Error sending email: {ex.Message}");
+                AddRecipients(message.Bcc, model.BccAddresses);
             }
-        }
 
-        private SmtpClient CreateSmtpClient()
-        {
-            return new SmtpClient(_config.SmtpServer, _config.SmtpPort)
-            {
-                EnableSsl = _config.EnableSsl,
-                Credentials = new NetworkCredential(_config.UserName, _config.Password),
-                DeliveryMethod = SmtpDeliveryMethod.Network,
-                Timeout = _config.Timeout,
-                UseDefaultCredentials = _config.UseDefaultCredentials
-            };
-        }
+            // 设置主题
+            message.Subject = model.Subject ?? "[No Subject]";
 
-        private MailMessage CreateMailMessage(MailMessageModel model)
-        {
-            var fromAddress = string.IsNullOrWhiteSpace(_config.FromAddress)
-                ? _config.UserName
-                : _config.FromAddress;
+            // 创建多部分邮件
+            var multipart = new Multipart("mixed");
 
-            var mail = new MailMessage
+            // 创建正文部分
+            var textPart = new TextPart(model.IsBodyHtml ? TextFormat.Html : TextFormat.Plain)
             {
-                From = new MailAddress(fromAddress),
-                Subject = model.Subject ?? "[No Subject]",
-                Body = model.Body ?? string.Empty,
-                IsBodyHtml = model.IsBodyHtml,
-                BodyEncoding = model.Encoding ?? Encoding.UTF8,
-                SubjectEncoding = model.Encoding ?? Encoding.UTF8
+                Text = model.Body ?? string.Empty
             };
+            multipart.Add(textPart);
+
+            // 添加附件
+            AddAttachments(multipart, model.Attachments);
+
+            message.Body = multipart;
 
-            // Add recipients
-            model.ToAddresses.ForEach(to => mail.To.Add(to));
-            model.CcAddresses?.ForEach(cc => mail.CC.Add(cc));
-            model.BccAddresses?.ForEach(bcc => mail.Bcc.Add(bcc));
+            using var client = new MailKit.Net.Smtp.SmtpClient();
 
-            // Add attachments
-            if (model.Attachments != null)
+            // 阿里邮箱的特殊设置
+            client.ServerCertificateValidationCallback = (s, c, h, e) => true;
+            client.Connect(_config.SmtpServer, _config.SmtpPort, MailKit.Security.SecureSocketOptions.SslOnConnect);
+
+            client.Authenticate(_config.UserName, _config.Password);
+            await client.SendAsync(message);
+            client.Disconnect(true);
+        } 
+        #endregion
+
+        #region 添加收件人
+        /// <summary>
+        /// 添加收件人
+        /// </summary>
+        /// <param name="list"></param>
+        /// <param name="addresses"></param>
+        private void AddRecipients(InternetAddressList list, IEnumerable<string> addresses)
+        {
+            foreach (var address in addresses)
             {
-                foreach (var attachment in model.Attachments)
+                if (!string.IsNullOrWhiteSpace(address))
                 {
-                    if (attachment.FileData == null || string.IsNullOrWhiteSpace(attachment.FileName))
-                        continue;
-
-                    var stream = new MemoryStream(attachment.FileData);
-                    mail.Attachments.Add(new Attachment(
-                        stream,
-                        attachment.FileName,
-                        attachment.MediaType ?? MediaTypeNames.Application.Octet
-                    ));
+                    list.Add(MailboxAddress.Parse(address.Trim()));
                 }
             }
+        } 
+        #endregion
+
+        #region 添加附件列表
+        /// <summary>
+        /// 添加附件列表
+        /// </summary>
+        /// <param name="multipart"></param>
+        /// <param name="attachments"></param>
+        private void AddAttachments(Multipart multipart, IEnumerable<MailAttachment> attachments)
+        {
+            if (attachments == null) return;
 
-            return mail;
-        }
+            foreach (var attachment in attachments)
+            {
+                if (attachment?.FileData == null || string.IsNullOrWhiteSpace(attachment.FileName))
+                    continue;
+
+                var mimeType = string.IsNullOrWhiteSpace(attachment.MediaType)
+                    ? MimeTypes.GetMimeType(attachment.FileName)
+                    : attachment.MediaType;
 
+                var part = new MimePart(mimeType)
+                {
+                    Content = new MimeContent(new MemoryStream(attachment.FileData)),
+                    ContentDisposition = new ContentDisposition(ContentDisposition.Attachment),
+                    ContentTransferEncoding = ContentEncoding.Base64,
+                    FileName = attachment.FileName
+                };
+
+                multipart.Add(part);
+            }
+        } 
+        #endregion
 
     }
 }

CoreCms.Net.Web.Admin/Controllers/Com/LoginController.cs

@@ -369,7 +369,7 @@ namespace CoreCms.Net.Web.Admin.Controllers
                 IsBodyHtml = true
             };
 
-            await _emailSender.SendEmailAsync(message);
+            await _emailSender.SendWithMailKitAsync(message);
         }
 
         #endregion

CoreCms.Net.Web.Admin/bin/Debug/net8.0/appsettings.json

@@ -10,8 +10,7 @@
     "Port": 465,
     "Username": "erpservice@geekbuy.com",
     "Password": "co69W7xEZ6qjBo01",
-    "FromAddress": "erpservice@geekbuy.com",
-    "DisplayName": "My Application"
+    "FromAddress": "erpservice@geekbuy.com"
   },
   //定时任务管理面板的账户密码
   "HangFire": {

CoreCms.Net.Web.WebApi/Controllers/TestController.cs

@@ -5,6 +5,7 @@ using CoreCms.Net.Utility.Helper;
 using Microsoft.AspNetCore.Mvc;
 using System;
 using System.Collections.Generic;
+using System.Net;
 using System.Threading.Tasks;
 
 namespace CoreCms.Net.Web.WebApi.Controllers
@@ -75,7 +76,11 @@ namespace CoreCms.Net.Web.WebApi.Controllers
                 IsBodyHtml = true
             };
 
-            await _emailSender.SendEmailAsync(message);
+            // 在应用启动代码前添加
+            System.Net.ServicePointManager.SecurityProtocol =
+                SecurityProtocolType.Tls12 | SecurityProtocolType.Tls13;
+
+            await _emailSender.SendWithMailKitAsync(message);
 
             return jm;
         }