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276
common/Tnb.Thirdparty/Email/MailUtil.cs
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276
common/Tnb.Thirdparty/Email/MailUtil.cs
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using System.Text;
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using JNPF.Common.Configuration;
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using JNPF.Common.Extension;
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using JNPF.Common.Security;
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using MailKit.Net.Pop3;
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using MailKit.Net.Smtp;
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using MimeKit;
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using MimeKit.Text;
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using Yitter.IdGenerator;
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namespace JNPF.Extras.Thirdparty.Email;
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/// <summary>
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/// 邮箱帮助类.
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/// </summary>
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public class MailUtil
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{
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private static string mailFilePath = FileVariable.EmailFilePath;
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/// <summary>
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/// 发送：协议Smtp.
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/// </summary>
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/// <param name="mailConfig">配置</param>
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/// <param name="mailModel">信息</param>
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public static void Send(MailParameterInfo mailConfig, MailInfo mailModel)
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{
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MimeMessage message = new MimeMessage();
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// 发送方信息
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message.From.AddRange(new MailboxAddress[] { new MailboxAddress(mailConfig.AccountName, mailConfig.Account) });
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// 发件人
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if (!string.IsNullOrEmpty(mailModel.To))
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{
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List<MailboxAddress> toAddress = new List<MailboxAddress>();
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foreach (var item in mailModel.To.Split(','))
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{
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toAddress.Add(new MailboxAddress(item));
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}
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message.To.AddRange(toAddress.ToArray());
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}
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// 抄送人
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if (!string.IsNullOrEmpty(mailModel.CC))
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{
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List<MailboxAddress> ccAddress = new List<MailboxAddress>();
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foreach (var item in mailModel.CC.Split(','))
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{
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ccAddress.Add(new MailboxAddress(item));
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}
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message.Cc.AddRange(ccAddress.ToArray());
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}
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// 密送人
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if (!string.IsNullOrEmpty(mailModel.Bcc))
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{
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List<MailboxAddress> bccAddress = new List<MailboxAddress>();
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foreach (var item in mailModel.Bcc.Split(','))
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{
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bccAddress.Add(new MailboxAddress(item));
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}
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message.Bcc.AddRange(bccAddress.ToArray());
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}
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message.Subject = mailModel.Subject;
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TextPart body = new TextPart(TextFormat.Html) { Text = mailModel.BodyText };
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MimeEntity entity = body;
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// 附件
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if (mailModel.Attachment != null)
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{
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var mult = new Multipart("mixed") { body };
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foreach (var attachment in mailModel.Attachment)
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{
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var file = new FileInfo(Path.Combine(mailFilePath , attachment.fileId));
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if (file.Exists)
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{
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var mimePart = new MimePart();
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mimePart.Content = new MimeContent(file.OpenRead());
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mimePart.ContentDisposition = new ContentDisposition(ContentDisposition.Attachment);
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mimePart.ContentTransferEncoding = ContentEncoding.Base64;
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mimePart.FileName = attachment.fileName;
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mult.Add(mimePart);
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}
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}
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entity = mult;
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}
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message.Body = entity;
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message.Date = DateTime.Now;
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using (var client = new SmtpClient())
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{
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client.ServerCertificateValidationCallback = (s, c, h, e) => true;
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client.Connect(mailConfig.SMTPHost, mailConfig.SMTPPort, mailConfig.Ssl);
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client.Authenticate(mailConfig.Account, mailConfig.Password);
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client.Send(message);
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client.Disconnect(true);
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}
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}
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/// <summary>
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/// 获取：协议Pop3.
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/// </summary>
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/// <param name="mailConfig">配置.</param>
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/// <param name="receiveCount">已收邮件数、注意：如果已收邮件数和邮件数量一致则不获取.</param>
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/// <returns></returns>
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public static List<MailInfo> Get(MailParameterInfo mailConfig, int receiveCount)
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{
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var resultList = new List<MailInfo>();
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using (var client = new Pop3Client())
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{
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client.ServerCertificateValidationCallback = (s, c, h, e) => true;
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client.Connect(mailConfig.POP3Host, mailConfig.POP3Port, mailConfig.Ssl);
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client.Authenticate(mailConfig.Account, mailConfig.Password);
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if (receiveCount == client.Count)
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return resultList;
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for (int i = client.Count - 1; receiveCount <= i; i--)
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{
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var message = client.GetMessage(i);
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var from = (MailboxAddress)message.From[0];
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var attachment = message.Attachments;
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resultList.Add(new MailInfo()
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{
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UID = message.MessageId,
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To = from.Address,
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ToName = from.Name,
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Subject = message.Subject,
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BodyText = message.HtmlBody,
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Attachment = GetEmailAttachments(attachment, message.MessageId),
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Date = message.Date.ToString().ParseToDateTime(),
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});
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}
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client.Disconnect(true);
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}
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return resultList;
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}
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/// <summary>
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/// 删除：协议Pop3.
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/// </summary>
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/// <param name="mailConfig">配置.</param>
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/// <param name="messageId">messageId.</param>
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public static void Delete(MailParameterInfo mailConfig, string messageId)
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{
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using (var client = new Pop3Client())
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{
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client.ServerCertificateValidationCallback = (s, c, h, e) => true;
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client.Connect(mailConfig.POP3Host, mailConfig.POP3Port, mailConfig.Ssl);
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client.Authenticate(mailConfig.Account, mailConfig.Password);
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for (int i = 0; i < client.Count; i++)
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{
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if (client.GetMessage(i).MessageId == messageId)
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{
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client.DeleteMessage(i);
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}
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}
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}
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}
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/// <summary>
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/// 验证连接：协议Smtp、Pop3.
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/// </summary>
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/// <param name="mailConfig">配置.</param>
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/// <returns></returns>
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public static bool CheckConnected(MailParameterInfo mailConfig)
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{
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try
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{
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if (!string.IsNullOrEmpty(mailConfig.SMTPHost))
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{
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using (var client = new SmtpClient())
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{
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client.ServerCertificateValidationCallback = (s, c, h, e) => true;
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client.Connect(mailConfig.SMTPHost, mailConfig.SMTPPort, mailConfig.Ssl);
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client.Authenticate(mailConfig.Account, mailConfig.Password);
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client.Disconnect(true);
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return true;
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}
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}
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if (!string.IsNullOrEmpty(mailConfig.POP3Host))
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{
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using (var client = new Pop3Client())
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{
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client.ServerCertificateValidationCallback = (s, c, h, e) => true;
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client.Connect(mailConfig.POP3Host, mailConfig.POP3Port, mailConfig.Ssl);
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client.Authenticate(mailConfig.Account, mailConfig.Password);
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client.Disconnect(true);
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return true;
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}
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}
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return false;
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}
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catch (Exception ex)
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{
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Console.Write("邮箱验证失败原因:" + ex + ",失败详情:" + ex.StackTrace);
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return false;
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}
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}
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#region Method
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/// <summary>
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/// 获取邮件附件.
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/// </summary>
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/// <param name="attachments"></param>
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/// <param name="messageId"></param>
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/// <returns></returns>
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private static List<MailFileParameterInfo> GetEmailAttachments(IEnumerable<MimeEntity> attachments, string messageId)
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{
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var resultList = new List<MailFileParameterInfo>();
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foreach (var attachment in attachments)
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{
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if (attachment.IsAttachment)
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{
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var fileName = attachment.ContentDisposition?.FileName ?? attachment.ContentType.Name;
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var fileId = YitIdHelper.NextId().ToString() + "_" + fileName;
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var filePath = Path.Combine(mailFilePath, fileId);
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using (var stream = File.Create(filePath))
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{
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if (attachment is MessagePart rfc822)
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{
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rfc822.Message.WriteTo(stream);
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}
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else
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{
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var part = (MimePart)attachment;
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part.Content.DecodeTo(stream);
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}
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}
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var mailFileInfo = new FileInfo(filePath);
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resultList.Add(new MailFileParameterInfo { fileId = fileId, fileName = fileName, fileSize = FileHelper.ToFileSize(mailFileInfo.Length) });
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}
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}
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return resultList;
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}
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/// <summary>
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/// 转换为Base64.
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/// </summary>
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/// <param name="inputStr"></param>
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/// <param name="encoding"></param>
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/// <returns></returns>
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private static string ConvertToBase64(string inputStr, Encoding encoding)
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{
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return Convert.ToBase64String(encoding.GetBytes(inputStr));
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}
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/// <summary>
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/// 转换报头为Base64.
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/// </summary>
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/// <param name="inputStr"></param>
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/// <param name="encoding"></param>
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/// <returns></returns>
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private static string ConvertHeaderToBase64(string inputStr, Encoding encoding)
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{
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var encode = !string.IsNullOrEmpty(inputStr) && inputStr.Any(c => c > 127);
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if (encode)
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{
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return "=?" + encoding.WebName + "?B?" + ConvertToBase64(inputStr, encoding) + "?=";
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}
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return inputStr;
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}
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#endregion
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}
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