.Net Email操作类

  1 using System;
  2 using System.Text;
  3 using System.Net.Mail;
  4 using System.Net;
  5 using System.Linq;
  6 using System.Text.RegularExpressions;
  7 
  8 namespace Dos.ORM.Common.Helpers
  9 {
 10     /// <summary>
 11     /// 发送邮件帮助类
 12     /// </summary>
 13     public class EmailHelper
 14     {
 15 
 16         private readonly SmtpClient _smtp = new SmtpClient();
 17         private Encoding Encoding { get; set; }
 18         private bool IsHtml { get; set; }
 19         private string[] Cc { get; set; }
 20         private string[] Bcc { get; set; }
 21 
 22         /// <summary>
 23         /// 是否为腾讯企业邮箱
 24         /// </summary>
 25         private readonly bool _isExmailQq;
 26 
 27         /// <summary>
 28         /// 发件邮箱密码或授权码
 29         /// </summary>
 30         private string Password { get; set; }
 31 
 32         /// <summary>
 33         /// 获取发送结果，成功则为空
 34         /// </summary>
 35         public string Result { get; private set; }
 36 
 37         /// <summary>
 38         /// 设置邮件编码类型
 39         /// </summary>
 40         /// <param name="contentEncoding"></param>
 41         public void SetEncoding(Encoding contentEncoding)
 42         {
 43             Encoding = contentEncoding;
 44 
 45         }
 46         /// <summary>
 47         ///设置邮件正文是否为 Html 格式 
 48         /// </summary>
 49         /// <param name="isHtml"></param>
 50         public void SetIsHtml(bool isHtml)
 51         {
 52             IsHtml = isHtml;
 53         }
 54         /// <summary>
 55         /// 抄送
 56         /// </summary>
 57         /// <param name="cc"></param>
 58         public void SetCc(params string[] cc)
 59         {
 60             Cc = cc;
 61         }
 62 
 63         /// <summary>
 64         /// 暗送
 65         /// </summary>
 66         /// <param name="bc"></param>
 67         public void SetBc(params string[] bc)
 68         {
 69             Bcc = bc;
 70         }
 71         /// <summary>
 72         /// 是否ssl加密
 73         /// </summary>
 74         /// <param name="isSsl"></param>
 75         public void SetIsSsl(bool isSsl)
 76         {
 77             _smtp.EnableSsl = isSsl;
 78         }
 79 
 80         /// <summary>
 81         /// 构造函数
 82         /// </summary>
 83         /// <param name="host">SMTP事务的主机的名称或IP地址</param>
 84         /// <param name="sendUserAccName">发件人邮件账号名称（不包含@及后缀）</param>
 85         /// <param name="sendUserPwd">发件人邮箱密码</param>
 86         /// <param name="isExmailQq">是否为腾讯企业邮箱</param>
 87         /// <param name="port">端口号，默认为25</param>
 88         public EmailHelper(string host, string sendUserAccName, string sendUserPwd, bool isExmailQq = false, int port = 25)
 89         {
 90             _smtp.Host = host;
 91             Password = sendUserPwd;
 92             _isExmailQq = isExmailQq;
 93             _smtp.Port = port != 25 ? port : 0x19;
 94             _smtp.EnableSsl = false;
 95 
 96             IsHtml = true;
 97             Encoding = Encoding.UTF8;
 98 
 99             if (string.IsNullOrEmpty(sendUserAccName) || string.IsNullOrEmpty(sendUserPwd))
100             {
101                 _smtp.UseDefaultCredentials = false;
102             }
103             else
104             {
105                 _smtp.Credentials = new NetworkCredential(sendUserAccName, sendUserPwd);
106             }
107         }
108 
109         /// <summary>
110         /// 发送邮件
111         /// </summary>
112         /// <param name="fromAcc">发件人邮件地址</param>
113         /// <param name="fromUserNickname">发件人显示名称</param>
114         /// <param name="toUserAcc">收件人地址</param>
115         /// <param name="title">邮件标题</param>
116         /// <param name="body">邮件正文</param>
117         /// <param name="file">附件地址数组</param>
118         /// <returns>bool 是否成功 </returns>
119         public bool Send(string fromAcc, string fromUserNickname, string toUserAcc, string title, string body, params string[] file)
120         {
121             return Send(fromAcc, fromUserNickname, new string[] { toUserAcc }, title, body, file);
122         }
123 
124         /// <summary>
125         /// 发送邮件
126         /// </summary>
127         /// <param name="fromAcc">发件人邮件地址</param>
128         /// <param name="fromUserNickname">发件人显示名称</param>
129         /// <param name="toUserAcc">收件人地址</param>
130         /// <param name="title">邮件标题</param>
131         /// <param name="body">邮件正文</param>
132         /// <param name="file">附件地址数组</param>
133         /// <returns>bool 是否成功 </returns>
134         public bool Send(string fromAcc, string fromUserNickname, string[] toUserAcc, string title, string body, params string[] file)
135         {
136             string mailReg = @"^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$";
137             if (toUserAcc == null)
138             {
139                 throw new ArgumentNullException("EmailHelper.Send.to");
140             }
141 
142             if (toUserAcc.Any(oit => !Regex.IsMatch(oit + "", mailReg)))
143             {
144                 Result = "收件人地址不合法";
145                 return false;
146             }
147             if (Bcc != null && Bcc.Length > 0)
148             {
149                 if (Bcc.Any(oit => !Regex.IsMatch(oit + "", mailReg)))
150                 {
151                     Result = "暗送人地址不合法";
152                     return false;
153                 }
154             }
155             if (Cc != null && Cc.Length > 0)
156             {
157                 if (Cc.Any(oit => !Regex.IsMatch(oit + "", mailReg)))
158                 {
159                     Result = "抄送人地址不合法";
160                     return false;
161                 }
162             }
163 
164             if (_isExmailQq)
165             {
166                 #region 检查是否为腾讯企业邮箱（注意这里有一个坑，腾旭企业邮箱需要单独进行以下设置）
167                 //此坑可参见：https://www.cnblogs.com/gxivwshjj/p/7562311.html
168 
169                 var mail = new System.Web.Mail.MailMessage();
170                 try
171                 {
172                     mail.To = string.Join(";", toUserAcc);
173                     mail.From = fromAcc;
174                     mail.Subject = title;
175                     mail.BodyFormat = System.Web.Mail.MailFormat.Html;
176                     mail.Body = body;
177 
178                     //设置基础身份验证为1
179                     mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");
180                     //设置发件邮箱地址
181                     mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", fromAcc);
182                     //设置发件邮箱密码
183                     mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", Password);
184                     //设置端口号为465
185                     mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", 465);
186                     //设置SSL为true
187                     mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "true");
188 
189                     //发送邮件的附件
190                     foreach (var r in file)
191                     {
192                         var objMailAttachment = new Attachment(r);
193                         mail.Attachments.Add(objMailAttachment);
194                     }
195 
196                     System.Web.Mail.SmtpMail.SmtpServer = _smtp.Host;
197                     System.Web.Mail.SmtpMail.Send(mail);
198 
199                     return true;
200                 }
201                 catch (Exception ex)
202                 {
203                     Result = ex.Message;
204                 }
205 
206                 #endregion
207             }
208             else
209             {
210                 MailMessage message = new MailMessage();
211 
212                 //创建一个附件对象
213                 foreach (var r in file)
214                 {
215                     //发送邮件的附件
216                     var objMailAttachment = new Attachment(r);
217                     message.Attachments.Add(objMailAttachment);
218                 }
219                 message.From = new MailAddress(fromAcc, fromUserNickname);
220                 message.Subject = title;
221                 message.SubjectEncoding = Encoding;
222                 message.Body = body;
223                 message.BodyEncoding = Encoding;
224                 message.IsBodyHtml = IsHtml;
225                 message.Priority = MailPriority.Normal;
226                 foreach (string str in toUserAcc)
227                 {
228                     message.To.Add(str);
229                 }
230                 if (Bcc != null && Bcc.Length > 0)
231                 {
232                     foreach (string b in Bcc)
233                     {
234                         message.Bcc.Add(b);
235                     }
236                 }
237                 if (Cc != null && Cc.Length > 0)
238                 {
239                     foreach (string c in Cc)
240                     {
241                         message.CC.Add(c);
242                     }
243                 }
244 
245                 try
246                 {
247                     _smtp.Send(message);
248                     return true;
249                 }
250                 catch (Exception ex)
251                 {
252                     Result = ex.Message;
253                 }
254             }
255 
256             return false;
257         }
258     }
259 }