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在开发过程中，发送邮件是一个常用的功能模块。通过合理配置和调用相关类，可以实现邮件的发送功能。本文将详细介绍发送邮件所需的核心技术以及具体实现方法。
在开发过程中，发送邮件的核心类主要有 MyEmail 和 SmtpClient。这些类分别负责邮件内容的处理和邮件传输的配置。
MyEmail 类：主要处理邮件的内容配置，包括接收方、发件方地址、邮件标题、邮件正文等信息。同时，还支持添加附件文件。
SmtpClient 类：负责通过 SMTP 协议发送邮件。该类内部封装了 Socket、TcpClient 等低层通信组件，简化了邮件发送的开发过程。
在使用 SmtpClient 类进行邮件发送时，需要配置以下几项参数：
以下是基于 C# 语言实现的邮件发送功能代码示例：
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{ public class Program { public static void Main(string[] args) { try { string senderServerIp = "123.125.50.133"; // SMTP 服务器地址 string toMailAddress = "mingmingruyuedlut@163.com"; // 收件人地址 string fromMailAddress = "mingmingruyuedlut@163.com"; // 发件人地址 string subjectInfo = "Test sending e_mail"; // 邮件标题 string bodyInfo = "Hello Eric, This is my first testing e_mail"; // 邮件内容 string mailUsername = "mingmingruyuedlut"; // 发件箱用户名 string mailPassword = ".........."; // 发件箱密码 string mailPort = "25"; // 发件箱端口号 string attachPath = "E:\\123123.txt; E:\\haha.pdf"; // 附件路径 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; // 邮件内容配置 private SmtpClient mSmtpClient; // SMTP 传输配置 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; mSmtpClient = new SmtpClient(); mSmtpClient.Host = server; mSmtpClient.Port = Convert.ToInt32(port); mSmtpClient.UseDefaultCredentials = false; mSmtpClient.EnableSsl = sslEnable; if (pwdCheckEnable) { mSmtpClient.Credentials = new System.Net.NetworkCredential(username, password); } else { mSmtpClient.Credentials = new System.Net.NetworkCredential(username, password); } mSmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network; mSmtpClient.Send(mMailMessage); } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } public void AddAttachments(string attachmentsPath) { try { string[] path = attachmentsPath.Split(';'); 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()); } } public void Send() { try { if (mMailMessage != null) { mSmtpClient = new SmtpClient(); mSmtpClient.Host = mSenderServerHost; mSmtpClient.Port = mSenderPort; mSmtpClient.UseDefaultCredentials = false; mSmtpClient.EnableSsl = mEnableSsl; if (mEnablePwdAuthentication) { System.Net.NetworkCredential nc = new System.Net.NetworkCredential(mSenderUsername, mSenderPassword); mSmtpClient.Credentials = nc.GetCredential(mSmtpClient.Host, mSmtpClient.Port, "NTLM"); } else { mSmtpClient.Credentials = new System.Net.NetworkCredential(mSenderUsername, mSenderPassword); } mSmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network; mSmtpClient.Send(mMailMessage); } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } }} 通过上述代码示例，可以清晰地看到实现邮件发送功能所需的核心技术和配置步骤。MyEmail 类负责邮件内容的配置，而 SmtpClient 类则负责邮件的传输过程。通过合理配置相关参数，可以实现邮件的成功发送。
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