C#实现邮件发送的功能-白红宇

C#实现邮件发送的功能

阅读量：5875 次

发布时间：2019-06-19

本文共 5770 字，大约阅读时间需要 19 分钟。

Ø 发送邮件所用的核心知识点

微软封装好的MailMessage类：主要处理发送邮件的内容（如：收发人地址、标题、主体、图片等等）

微软封装好的SmtpClient类：主要处理用smtp方式发送此邮件的配置信息（如：邮件服务器、发送端口号、验证方式等等）

SmtpClient主要进行了三层的封装：Socket --> TcpClient --> SmtpClient

Ø 具体代码请看如下所示：

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net.Mail; using System.Net.Mime; using System.IO; using System.Timers; using System.Xml; namespace MyEmailTest {
   class Program     {
   static void Main(string[] args)         {
   try             {
   //smtp.163.com                 string senderServerIp = "123.125.50.133"; //smtp.gmail.com //string senderServerIp = "74.125.127.109"; //smtp.qq.com //string senderServerIp = "58.251.149.147"; //string senderServerIp = "smtp.sina.com";                 string toMailAddress = "mingmingruyuedlut@163.com"; string fromMailAddress = "mingmingruyuedlut@163.com"; string subjectInfo = "Test sending e_mail"; string bodyInfo = "Hello Eric, This is my first testing e_mail"; string mailUsername = "mingmingruyuedlut"; string mailPassword = ".........."; //发送邮箱的密码（）                 string mailPort = "25"; string attachPath = "E:\\123123.txt; E:\\haha.pdf";                 MyEmail email = new MyEmail(senderServerIp, toMailAddress, fromMailAddress, subjectInfo, bodyInfo, mailUsername, mailPassword, mailPort, false, false);                 email.AddAttachments(attachPath);                 email.Send();             } catch (Exception ex)             {
                   Console.WriteLine(ex.ToString());             }         }     } public class MyEmail     {
   private MailMessage mMailMessage;   //主要处理发送邮件的内容（如：收发人地址、标题、主体、图片等等）         private SmtpClient mSmtpClient; //主要处理用smtp方式发送此邮件的配置信息（如：邮件服务器、发送端口号、验证方式等等）         private int mSenderPort;   //发送邮件所用的端口号（htmp协议默认为25）         private string mSenderServerHost;    //发件箱的邮件服务器地址（IP形式或字符串形式均可）         private string mSenderPassword;    //发件箱的密码         private string mSenderUsername;   //发件箱的用户名（即@符号前面的字符串，例如：hello@163.com，用户名为：hello）         private bool mEnableSsl;    //是否对邮件内容进行socket层加密传输         private bool mEnablePwdAuthentication;  //是否对发件人邮箱进行密码验证 /// /// 构造函数 ///
 ///发件箱的邮件服务器地址 ///收件人地址（可以是多个收件人，程序中是以“;"进行区分的） ///发件人地址 ///邮件标题 ///邮件内容（可以以html格式进行设计） ///发件箱的用户名（即@符号前面的字符串，例如：hello@163.com，用户名为：hello） ///发件人邮箱密码 ///发送邮件所用的端口号（htmp协议默认为25） ///true表示对邮件内容进行socket层加密传输，false表示不加密 ///true表示对发件人邮箱进行密码验证，false表示不对发件人邮箱进行密码验证         public MyEmail(string server, string toMail, string fromMail, string subject, string emailBody, string username, string password, string port, bool sslEnable, bool pwdCheckEnable)         {
   try             {
                   mMailMessage = new MailMessage();                 mMailMessage.To.Add(toMail);                 mMailMessage.From = new MailAddress(fromMail);                 mMailMessage.Subject = subject;                 mMailMessage.Body = emailBody;                 mMailMessage.IsBodyHtml = true;                 mMailMessage.BodyEncoding = System.Text.Encoding.UTF8;                 mMailMessage.Priority = MailPriority.Normal; this.mSenderServerHost = server; this.mSenderUsername = username; this.mSenderPassword = password; this.mSenderPort = Convert.ToInt32(port); this.mEnableSsl = sslEnable; this.mEnablePwdAuthentication = pwdCheckEnable;             } catch (Exception ex)             {
                   Console.WriteLine(ex.ToString());             }         } /// /// 添加附件 ///
 ///附件的路径集合，以分号分隔         public void AddAttachments(string attachmentsPath)         {
   try             {
   string[] path = attachmentsPath.Split(';'); //以什么符号分隔可以自定义                 Attachment data;                 ContentDisposition disposition; for (int i = 0; i < path.Length; i++)                 {
                       data = new Attachment(path[i], MediaTypeNames.Application.Octet);                     disposition = data.ContentDisposition;                     disposition.CreationDate = File.GetCreationTime(path[i]);                     disposition.ModificationDate = File.GetLastWriteTime(path[i]);                     disposition.ReadDate = File.GetLastAccessTime(path[i]);                     mMailMessage.Attachments.Add(data);                 }             } catch (Exception ex)             {
                   Console.WriteLine(ex.ToString());             }         } /// /// 邮件的发送 ///
         public void Send()         {
   try             {
   if (mMailMessage != null)                 {
                       mSmtpClient = new SmtpClient(); //mSmtpClient.Host = "smtp." + mMailMessage.From.Host;                     mSmtpClient.Host = this.mSenderServerHost;                     mSmtpClient.Port = this.mSenderPort;                     mSmtpClient.UseDefaultCredentials = false;                     mSmtpClient.EnableSsl = this.mEnableSsl; if (this.mEnablePwdAuthentication)                     {
                           System.Net.NetworkCredential nc = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword); //mSmtpClient.Credentials = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword); //NTLM: Secure Password Authentication in Microsoft Outlook Express                         mSmtpClient.Credentials = nc.GetCredential(mSmtpClient.Host, mSmtpClient.Port, "NTLM");                     } else                     {
                           mSmtpClient.Credentials = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);                     }                     mSmtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;                     mSmtpClient.Send(mMailMessage);                 }             } catch (Exception ex)             {
                   Console.WriteLine(ex.ToString());             }         }     } }