最近要做一个发送邮件的功能,依稀记得曾经有做过相似的东西,翻看了以前保存的项目代码,果然有(虽然已经不记得是怎么完成的了)。
完整项目就不贴了,有个Helper.cs,把这个贴上来吧,实际业务需要,新增了添加附件的方法。
public class EmailHelper { 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:[email protected],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 ///<summary> /// 构造函数 ///</summary> ///<param name="server">发件箱的邮件服务器地址</param> ///<param name="toMail">收件人地址(可以是多个收件人,程序中是以“;"进行区分的)</param> ///<param name="fromMail">发件人地址</param> ///<param name="subject">邮件标题</param> ///<param name="emailBody">邮件内容(可以以html格式进行设计)</param> ///<param name="username">发件箱的用户名(即@符号前面的字符串,例如:[email protected],用户名为:hello)</param> ///<param name="password">发件人邮箱密码</param> ///<param name="port">发送邮件所用的端口号(htmp协议默认为25)</param> ///<param name="sslEnable">true表示对邮件内容进行socket层加密传输,false表示不加密</param> ///<param name="pwdCheckEnable">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</param> public EmailHelper(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()); } } ///<summary> /// 添加附件 ///</summary> ///<param name="attachmentsPath">附件的路径集合,以分号分隔</param> public void AddAttachments(string attachmentsPath) { try { string[] path = attachmentsPath.Split(\';\'); //分隔符号可以自定义 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()); } } ///<summary> /// 添加附件 ///</summary> ///<param name="stream">网络附件,上传Stream流</param> public void AddAttachments(Stream stream, string name) { try { //string[] path = attachmentsPath.Split(\';\'); //以什么符号分隔可以自定义 Attachment data; data = new Attachment(stream, name); mMailMessage.Attachments.Add(data); } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } ///<summary> /// 发送邮件 ///</summary> public void Send() { try { if (mMailMessage != null) { //建立发送对象client,验证邮件服务器,服务器端口,用户名,以及密码 mSmtpClient = new SmtpClient(); 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()); } } }
添加附件,分为绝对路径与网络路径两种
添加绝对路径很简单
//添加本地附件
emailHelper.AddAttachments("C:\\附件1.txt");
//发送邮件
emailHelper.Send();
网络路径则通过Steam流上传文件
string url = "https://pic.cnblogs.com/avatar/35695/20201013225735.png"; WebClient web = new WebClient();
//从网络路径下载资源作为 Byte 数组 byte[] a = web.DownloadData(url); Stream s = new MemoryStream(a); string name = url.Substring(url.LastIndexOf("."));
//通过Stream添加附件 emailHelper.AddAttachments(s, "博客园团队" + name);
//发送邮件
emailHelper.Send();
排坑:
1、腾讯企业邮箱,smtp发送服务器是 “smtp.exmail.qq.com”,官方给出的是465,我使用587端口,使用其他端口发布到服务器上,我这儿提示超时。具体587与465端口的区别,找到一个歪果仁的贴子自己看吧 https://stackoverflow.com/questions/15796530/what-is-the-difference-between-ports-465-and-587
2、网易邮箱,有个很带劲的操作,”授权密码“,网易需要自己新增一个“授权码”(是用于登录第三方邮件客户端的专用密码)
不以物喜,不以己悲。
静
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