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asp.net 邮件类库项目源码

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  • 开发语言:C#
  • 实例大小:0.04M
  • 下载次数:17
  • 浏览次数:208
  • 发布时间:2016-07-28
  • 实例类别:C#语言基础
  • 发 布 人:2355785606
  • 文件格式:.rar
  • 所需积分:6
 相关标签: 邮件

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using System;
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Collections;
using System.Runtime .InteropServices ;
using System.Windows.Forms ;
//正则表达式需要用到的命名空间(本程序中主要用于切割字符串)
using System.Text .RegularExpressions ;
namespace MailSend
{
    public class SmtpMail
    {
        public SmtpMail()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }
 
        //用来接收调用程序传来的附件路径
        private string []FilePath;
         
//      [DllImport("User32.dll")]
//      public static extern int MessageBox(int h, string m, string c, int type); 
//
 
        /// <summary>
        /// 重载的构造函数,以便把相关的附件信息传入
        /// </summary>
        /// <param name="array"></param>
        public SmtpMail(ArrayList array)
        {
            //在重载构造函数的同时,将FiilePath初始化
            FilePath=new string [array.Count ];
            Attachments = new System.Collections.ArrayList();
            for(int i=0;i<array.Count ;i  )
            {
                FilePath[i]=array[i].ToString ();
            }
                 
            if(FilePath!=null)
            {
                AddAttachment(FilePath);
            }
        }
 
             
 
        private string enter="\r\n";
 
        /// <summary>
        /// 设定语言代码,默认设定为GB2312,如不需要可设置为""
        /// </summary>
        private string _charset="GB2312";
 
        /// <summary>
        /// 发件人地址
        /// </summary>
        private string _from="";
 
        /// <summary>
        /// 发件人姓名
        /// </summary>
        private string _fromName="";
 
        /// <summary>
        /// 回复邮件地址
        /// </summary>
        ///public string ReplyTo="";
 
        /// <summary>
        /// 收件人列表
        /// </summary>
        private string Recipient;
 
        /// <summary>
        /// 邮件服务器域名
        /// </summary>
        private string mailserver="";
 
        /// <summary>
        /// 邮件服务器端口号
        /// </summary>
        private int mailserverport=25;
 
        /// <summary>
        /// SMTP认证时使用的用户名
        /// </summary>
        private string username="";
 
        /// <summary>
        /// SMTP认证时使用的密码
        /// </summary>
        private string password="";
 
        /// <summary>
        /// 是否需要SMTP验证
        /// </summary>
        private bool ESmtp=false;
 
        /// <summary>
        /// 是否Html邮件
        /// </summary>
        private bool _html=false;
 
 
        /// <summary>
        /// 邮件附件列表
        /// </summary>
        private IList Attachments;
 
        /// <summary>
        /// 邮件发送优先级,可设置为"High","Normal","Low"或"1","3","5"
        /// </summary>
        private string priority="Normal";
 
        /// <summary>
        /// 邮件主题
        /// </summary>
        private string _subject;
 
        /// <summary>
        /// 邮件正文
        /// </summary>
        private string _body;
     
 
        /// <summary>
        /// 错误消息反馈
        /// </summary>
        private string errmsg;
 
        /// <summary>
        /// TcpClient对象,用于连接服务器
        /// </summary>
        private TcpClient tc;
 
        /// <summary>
        /// NetworkStream对象
        /// </summary>
        private NetworkStream ns;
 
        /// <summary>
        /// SMTP错误代码哈希表
        /// </summary>
        private Hashtable ErrCodeHT = new Hashtable();
 
        /// <summary>
        /// SMTP正确代码哈希表
        /// </summary>
        private Hashtable RightCodeHT = new Hashtable();
 
 
        /// <summary>
        /// 邮件主题
        /// </summary>
        public string Subject
        {
            get
            {
                return this._subject;
            }
            set
            {
                this._subject = value;
            }
        }
 
        /// <summary>
        /// 邮件正文
        /// </summary>
        public string Body
        {
            get
            {
                return this._body;
            }
            set
            {
                this._body = value;
            }
        }
 
 
        /// <summary>
        /// 发件人地址
        /// </summary>
        public string From
        {
            get
            {
                return _from;
            }
            set
            {
                this._from = value;
            }
        }
 
        /// <summary>
        /// 设定语言代码,默认设定为GB2312,如不需要可设置为""
        /// </summary>
        public string Charset
        {
            get
            {
                return this._charset;
            }
            set
            {
                this._charset = value;
            }
        }
 
        /// <summary>
        /// 发件人姓名
        /// </summary>
        public string FromName
        {
            get
            {
                return this._fromName;
            }
            set
            {
                this._fromName = value;
            }
        }
 
        /// <summary>
        /// 收件人姓名
        /// </summary>
        public string RecipientName
        {
            get
            {
                return this.Recipient;
            }
            set
            {
                this.Recipient = value;
            }
        }
 
        /// <summary>
        /// 邮件服务器域名和验证信息
        /// 形如:"user:pass@www.server.com:25",也可省略次要信息。如"user:pass@www.server.com"或"www.server.com"
        /// </summary>
        public string MailDomain
        {
            set
            {
                mailserver=value;
 
            }
 
                 
        }
 
 
 
        /// <summary>
        /// 邮件服务器端口号
        /// </summary>
        public int MailDomainPort
        {
            set
            {
                mailserverport=value;
            }
        }
 
 
 
        /// <summary>
        /// SMTP认证时使用的用户名
        /// </summary>
        public string MailServerUserName
        {
            set
            {
                if(value.Trim()!="")
                {
                    username=value.Trim();
                    ESmtp=true;
                }
                else
                {
                    username="";
                    ESmtp=false;
                }
            }
        }
 
        /// <summary>
        /// SMTP认证时使用的密码
        /// </summary>
        public string MailServerPassWord
        {
            set
            {
                password=value;
            }
        }
 
        /// <summary>
        /// 邮件发送优先级,可设置为"High","Normal","Low"或"1","3","5"
        /// </summary>
        public string Priority
        {
            set
            {
                switch(value.ToLower())
                {
                    case "high":
                        priority="High";
                        break;
 
                    case "1":
                        priority="High";
                        break;
 
                    case "normal":
                        priority="Normal";
                        break;
 
                    case "3":
                        priority="Normal";
                        break;
 
                    case "low":
                        priority="Low";
                        break;
 
                    case "5":
                        priority="Low";
                        break;
 
                    default:
                        priority="Normal";
                        break;
                }
            }
        }
 
        /// <summary>
        /// 是否Html邮件
        /// </summary>
        public bool Html
        {
            get
            {
                return this._html;
            }
            set
            {
                this._html = value;
            }
        }
 
 
        /// <summary>
        /// 错误消息反馈
        /// </summary>
        public string ErrorMessage
        {
            get
            {
                return errmsg;
            }
        }
     
 
        public bool eSmtp
        {
            get
            {
                return this.ESmtp;
            }
            set
            {
                this.ESmtp =value;
            }
        }
             
 
 
        /// <summary>
        /// 添加邮件附件
        /// </summary>
        /// <param name="FilePath">附件绝对路径</param>
        public void AddAttachment(params string[] FilePath)
        {
            try
            {
                if(FilePath==null)
                {
                    throw(new ArgumentNullException("FilePath"));
                }
                for(int i=0;i<FilePath.Length;i  )
                {
                    Attachments.Add(FilePath[i]);
                }
            }
            catch(Exception ex)
            {
                MessageBox.Show (ex.ToString ());
            }
        }
 
 
 
        /// <summary>
        /// 得到上传附件的文件流
        /// </summary>
        /// <param name="FilePath">附件的绝对路径</param>
        private string GetStream(string FilePath)
        {
            try
            {
                //建立文件流对象
                System.IO.FileStream FileStr=new System.IO.FileStream(FilePath,System.IO.FileMode.Open);
                byte[] by=new byte[System.Convert.ToInt32(FileStr.Length)];
                FileStr.Read(by,0,by.Length);
                FileStr.Close();
                return(System.Convert.ToBase64String(by));
            }
            catch
            {
                MessageBox.Show ("可能你要打开的文件的属性是只读的!","请检查权限");
                return null;
            }
        }
 
 
        /// <summary>
        /// 发送邮件方法,所有参数均通过属性设置。
        /// </summary>
        public bool Send()
        {
            if(mailserver.Trim()=="")
            {
                MessageBox.Show ("必须指定SMTP服务器");
                return false;
            }
 
            return SendEmail();
 
        }
 
 
        /// <summary>
        /// 发送邮件方法
        /// </summary>
        /// <param name="smtpserver">smtp服务器信息,如"username:password@www.smtpserver.com:25",也可去掉部分次要信
 
             
        public bool Send(string smtpserver)
        {
            MailDomain=smtpserver;
            return Send();
        }
 
 
        /// <summary>
        /// 发送邮件方法
        /// </summary>
        /// <param name="smtpserver">smtp服务器信息,如"username:password@www.smtpserver.com:25",也可去掉部分次要信
 
             
        /// <param name="from">发件人mail地址</param>
        /// <param name="fromname">发件人姓名</param>
        /// <param name="to">收件人地址</param>
        /// <param name="toname">收件人姓名</param>
        /// <param name="html">是否HTML邮件</param>
        /// <param name="subject">邮件主题</param>
        /// <param name="body">邮件正文</param>
        public bool Send(string smtpserver,string from,string fromname,string to,bool html,string
 
            subject,string body)
        {
            MailDomain=smtpserver;
            From=from;
            FromName=fromname;
            Recipient=to;
            Html=html;
            Subject=subject;
            Body=body;
            return Send();
        }
 
 
        void Dispose()
        {
            if(ns!=null)ns.Close();
            if(tc!=null)tc.Close();
        }
 
        /// <summary>
        /// SMTP回应代码哈希表
        /// </summary>
        private void SMTPCodeAdd()
        {
            ErrCodeHT.Add("500","邮箱地址错误");
            ErrCodeHT.Add("501","参数格式错误");
            ErrCodeHT.Add("502","命令不可实现");
            ErrCodeHT.Add("503","服务器需要SMTP验证");
            ErrCodeHT.Add("504","命令参数不可实现");
            ErrCodeHT.Add("421","服务未就绪,关闭传输信道");
            ErrCodeHT.Add("450","要求的邮件操作未完成,邮箱不可用(例如,邮箱忙)");
            ErrCodeHT.Add("550","要求的邮件操作未完成,邮箱不可用(例如,邮箱未找到,或不可访问)");
            ErrCodeHT.Add("451","放弃要求的操作;处理过程中出错");
            ErrCodeHT.Add("551","用户非本地,请尝试<forward-path>");
            ErrCodeHT.Add("452","系统存储不足,要求的操作未执行");
            ErrCodeHT.Add("552","过量的存储分配,要求的操作未执行");
            ErrCodeHT.Add("553","邮箱名不可用,要求的操作未执行(例如邮箱格式错误)");
            ErrCodeHT.Add("432","需要一个密码转换");
            ErrCodeHT.Add("534","认证机制过于简单");
            ErrCodeHT.Add("538","当前请求的认证机制需要加密");
            ErrCodeHT.Add("454","临时认证失败");
            ErrCodeHT.Add("530","需要认证");
 
            RightCodeHT.Add("220","服务就绪");
            RightCodeHT.Add("250","要求的邮件操作完成");
            RightCodeHT.Add("251","用户非本地,将转发向<forward-path>");
            RightCodeHT.Add("354","开始邮件输入,以<enter>.<enter>结束");
            RightCodeHT.Add("221","服务关闭传输信道");
            RightCodeHT.Add("334","服务器响应验证Base64字符串");
            RightCodeHT.Add("235","验证成功");
        }
 
 
        /// <summary>
        /// 将字符串编码为Base64字符串
        /// </summary>
        /// <param name="str">要编码的字符串</param>
        private string Base64Encode(string str)
        {
            byte[] barray;
            barray=Encoding.Default.GetBytes(str);
            return Convert.ToBase64String(barray);
        }
 
 
        /// <summary>
        /// 将Base64字符串解码为普通字符串
        /// </summary>
        /// <param name="str">要解码的字符串</param>
        private string Base64Decode(string str)
        {
            byte[] barray;
            barray=Convert.FromBase64String(str);
            return Encoding.Default.GetString(barray);
        }
 
 
             
        /// <summary>
        /// 发送SMTP命令
        /// </summary>
        private bool SendCommand(string str)
        {
            byte[] WriteBuffer;
            if(str==null||str.Trim()==String.Empty)
            {
                return true;
            }
 
            WriteBuffer = Encoding.Default.GetBytes(str);
            try
            {
                ns.Write(WriteBuffer,0,WriteBuffer.Length);
            }
            catch
            {
                errmsg="网络连接错误";
                return false;
            }
            return true;
        }
 
        /// <summary>
        /// 接收SMTP服务器回应
        /// </summary>
        private string RecvResponse()
        {
            int StreamSize;
            string ReturnValue = String.Empty;
            byte[] ReadBuffer = new byte[1024] ;
            try
            {
                StreamSize=ns.Read(ReadBuffer,0,ReadBuffer.Length);
            }
            catch(Exception ex)
            {
                MessageBox.Show (ex.ToString ());
                return "false";
            }
 
            if (StreamSize==0)
            {
                return ReturnValue ;
            }
            else
            {
                ReturnValue = Encoding.Default.GetString(ReadBuffer).Substring(0,StreamSize);
                return ReturnValue;
            }
        }
 
        /// <summary>
        /// 与服务器交互,发送一条命令并接收回应。
        /// </summary>
        /// <param name="str">一个要发送的命令</param>
        /// <param name="errstr">如果错误,要反馈的信息</param>
        private bool Dialog(string str,string errstr)
        {
                 
            if(str==null||str.Trim()=="")
            {
                return true;
            }
            if(SendCommand(str))
            {
                string RR=RecvResponse();
                if(RR=="false")
                {
                    return false;
                }
                try
                {
                    string RRCode=RR.Substring(0,3);
                    if(RightCodeHT[RRCode]!=null)
                    {
                        return true;
                    }
                    else
                    {
                        if(ErrCodeHT[RRCode]!=null)
                        {
                            errmsg =(RRCode ErrCodeHT[RRCode].ToString());
                            errmsg =enter;
                        }
                        else
                        {
                            errmsg =RR;
                        }
                        errmsg =errstr;
                        return false;
                    }
                }
                catch
                {
                    MessageBox.Show ("发送的附件超过本服务器对个人软件的支持!","请检查附件的大小");
                    return false;
                }
            }
            else
            {
                return false;
            }
        }
                 
        /// <summary>
        /// 与服务器交互,发送一组命令并接收回应。
        /// </summary>
 
        private bool Dialog(string[] str,string errstr)
        {
            for(int i=0;i<str.Length;i  )
            {
                //如果在身份验证阶段有一个不成功,就返回错误标志位
                if(!Dialog(str[i],""))
                {
                    errmsg =enter;
                    errmsg =errstr;
                    return false;
                }
            }
 
            //身份验证全部正确的话,则返回正确标志位
            return true;
        }
 
        /// <summary>
        /// SendEmail
        /// </summary>
        /// <returns></returns>
        private bool SendEmail()
        {
            try
            {
                tc=new TcpClient(mailserver,mailserverport);
            }
            catch
            {
                MessageBox.Show ("连接失败","请确认");
                return false;
            }
 
            ns = tc.GetStream();
            SMTPCodeAdd();
 
            //验证网络连接是否正确
            if(RightCodeHT[RecvResponse().Substring(0,3)]==null)
            {
                errmsg="网络连接失败";
                return false;
            }
 
 
            string[] SendBuffer;
            string SendBufferstr;
 
            //进行SMTP验证
            if(ESmtp)
            {
                SendBuffer=new String[4];
                SendBuffer[0]="EHLO "   mailserver   enter;
                SendBuffer[1]="AUTH LOGIN"   enter;
                SendBuffer[2]=Base64Encode(username)   enter;
                SendBuffer[3]=Base64Encode(password)   enter;
                if(!Dialog(SendBuffer,"SMTP服务器验证失败,请核对用户名和密码。"))
                {
                    MessageBox.Show ("SMTP服务器验证失败,请核对用户名和密码。");
                    return false;
                }
            }
            else
            {
                SendBufferstr="HELO "   mailserver   enter;
                if(!Dialog(SendBufferstr,""))
                    return false;
            }
 
            //
            SendBufferstr="MAIL FROM:<"   From   ">"   enter;
            if(!Dialog(SendBufferstr,"发件人地址错误,或不能为空"))
            {
                MessageBox.Show("发件人地址错误,或不能为空");
                return false;
            }
 
              
            //把传过来的收件人的地址分割然后提交给服务器
            string split=",";
            string []address=Regex.Split (RecipientName,split);
            SendBuffer=new string [address.Length];
            for(int i=0;i<SendBuffer.Length;i  )
            {
                SendBuffer[i]="RCPT TO:<"  address[i] ">"   enter;
            }
            if(!Dialog(SendBuffer,"收件人地址有误"))
            {
                MessageBox.Show("收件人地址有误");
                return false;
            }
 
                 
            SendBufferstr="DATA"   enter;
            if(!Dialog(SendBufferstr,""))
                return false;
 
            SendBufferstr="From:"   FromName   "<"   From  ">"  enter;
            SendBufferstr  = "To:<" RecipientName ">" enter;
             
             
 
            SendBufferstr =((Subject==String.Empty || Subject==null)?"Subject:":((Charset=="")?("Subject:"  
 
                Subject):("Subject:"   "=?"   Charset.ToUpper()   "?B?"   Base64Encode(Subject)  "?=")))   enter;
            SendBufferstr ="X-Priority:"   priority   enter;
            SendBufferstr ="X-Mailer: ArgentSwan Mail Sender"   enter;
            SendBufferstr ="MIME-Version: 1.0"   enter;
 
            //MIME定义了5个新的信头字段,可以与原有信头字段一样,用在RF822邮件的首部中。
            //1.MIME版本信头字段              格式:MIME-Version:1.0 <CRLF>
            //2.邮件唯一标识信头字段          格式:Content-ID:唯一标识信件的字符串  <CRLF>
            //3.邮件内容描述信头字段          格式:Content-Description:描述文本 <CRLF>
            //4.MIME邮件的内容类型信头字段     格式:Content-Type:主类别标识符/子类别标识符 [;参数列表]  <CRLF>
            //5.内容传送编码方式信头字段        格式:Content-Transfer-Encoding:编码方式标识符 <CRLF>
 
            if(Attachments.Count!=0)
            {
                //mixed  按照特定顺序的几个独立部分
                SendBufferstr ="Content-Type: multipart/mixed;"   enter;
                SendBufferstr  = " boundary=\"***" 
 
                    (Html?"001_yinhu19821115":"001_yinhu19831115") "***\"" enter enter;
            }
 
            if(Html)
            {
                if(Attachments.Count==0)
                {
                    //multipart多部分  alternative 不同格式的同一邮件
                    SendBufferstr  = "Content-Type: multipart/alternative;" enter;//内容格式和分隔符
                    SendBufferstr  = " boundary=\"***003_yinhu19821115***\"" enter enter;
 
                    SendBufferstr  = "This is a multi-part message in MIME format." enter enter;
                }
                else
                {
                    SendBufferstr  ="This is a multi-part message in MIME format." enter enter;
                    SendBufferstr  = "--***001_yinhu19821115***" enter;
                    SendBufferstr  = "Content-Type: multipart/alternative;" enter;//内容格式和分隔符
                    SendBufferstr  = " boundary=\"***003_yinhu19821115***\"" enter enter;
 
 
                }
                SendBufferstr  = "--***003_yinhu19821115***" enter;
                SendBufferstr  = "Content-Type: text/plain;"  enter;
                SendBufferstr  = ((Charset=="")?(" charset=\"iso-8859-1\""):(" charset=\""  
 
                    Charset.ToLower()   "\""))   enter;
                SendBufferstr ="Content-Transfer-Encoding: base64"   enter   enter;
                SendBufferstr = Base64Encode("邮件内容为HTML格式,请选择HTML方式查看")   enter   enter;
 
                SendBufferstr  = "--***003_yinhu19821115***" enter;
 
 
 
                SendBufferstr ="Content-Type: text/html;"   enter;
                SendBufferstr =((Charset=="")?(" charset=\"iso-8859-1\""):(" charset=\""  
 
                    Charset.ToLower()   "\""))   enter;
                SendBufferstr ="Content-Transfer-Encoding: base64"   enter   enter;
                SendBufferstr =Base64Encode(Body)  enter   enter;
                SendBufferstr  = "--***003_yinhu19821115***--" enter;
            }
            else
            {
                if(Attachments.Count!=0)
                {
                    SendBufferstr  = "--***001_yinhu19831115***" enter;
                }
                SendBufferstr ="Content-Type: text/plain;"   enter;
                SendBufferstr =((Charset=="")?(" charset=\"iso-8859-1\""):(" charset=\""  
 
                    Charset.ToLower()   "\""))   enter;
                SendBufferstr ="Content-Transfer-Encoding: base64"   enter   enter;
                SendBufferstr = Base64Encode(Body)   enter;
            }
 
 
            if(Attachments.Count!=0)
            {
                for(int i=0;i<Attachments.Count;i  )
                {
                    string filepath = Attachments[i].ToString();
                    SendBufferstr  = "--***" 
 
                        (Html?"001_yinhu19821115":"001_yinhu19831115""***" enter;
                    //用于在电子邮件中传输一个含有任意数据的实体。内容是一个未解释的字节序列。
                    //当内容类型未知或者对数据没有具体定义媒体类别时,通常使用它描述
                    SendBufferstr  = "Content-Type: application/octet-stream" enter;
                    SendBufferstr  = " name=\"=?" Charset.ToUpper() "?B?" Base64Encode
 
                        (filepath.Substring(filepath.LastIndexOf("\\") 1)) "?=\"" enter;
                    SendBufferstr  = "Content-Transfer-Encoding: base64" enter;
                    SendBufferstr  = "Content-Disposition: attachment;" enter;
                    SendBufferstr  = " filename=\"=?" Charset.ToUpper() "?B?" Base64Encode
 
                        (filepath.Substring(filepath.LastIndexOf("\\") 1)) "?=\"" enter enter;
                    SendBufferstr  = GetStream(filepath) enter enter;
                }
                SendBufferstr  = "--***"  (Html?"001_yinhu19821115":"001_yinhu19831115")
 
                     "***--" enter enter;
            }
             
            SendBufferstr  = enter   "."   enter;
 
            if(!Dialog(SendBufferstr,"错误信件信息"))
                return false;
 
            SendBufferstr="QUIT"   enter;
            if(!Dialog(SendBufferstr,"断开连接时错误"))
                return false;
 
            ns.Close();
            tc.Close();
            return true;
        }
         
    }
}

标签: 邮件

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