asp.net基于windows服务实现定时发送邮件的方法

//定义组件private System.Timers.Timer time
public int nowhour
public int minutes
public string sendTime
public Thread th
public string isOpen
//是否启用定时发送public string strToEUser
public static int index = -1
public static ArrayList mulitaddress
//服务开始protected override void OnStart(string[] args)
{  time = new System.Timers.Timer()
  time.Enabled = true
  time.AutoReset = true
  //定时执行方法   time.Elapsed+=new System.Timers.ElapsedEventHandler(time_Elapsed)
    UserEmail toUser =new UserEmail()
    mulitaddress = GetMailAdressName()
   // LogHelper.SaveNote("当前索引的值" + index.ToString())
    Thread.Sleep(2000)
   time.Start()
}public class LogHelper
{  public static void SaveNote(string note)  
{    FileStream stream = new FileStream(GetLogDirectory("Common") + DateTime.Now.ToString("yyyy-MM-dd") + ".txt", FileMode.Append, FileAccess.Write, FileShare.Delete | FileShare.ReadWrite)
    StreamWriter writer = new StreamWriter(stream, Encoding.UTF8)
    writer.WriteLine("================================================================")
    writer.WriteLine(string.Format("Note:/t
{0}", note))
    writer.WriteLine(string.Format("DateTime:/t
{0}/r/n/r/n",DateTime.Now.ToString()))
    stream.Flush()
    writer.Close()
    stream.Close()
    stream.Dispose()
    writer.Dispose()
  }  public static void SaveNote(string note, string txtname)  
{    FileStream stream = new FileStream(GetLogDirectory(txtname) + DateTime.Now.ToString("yyyy-MM-dd") + ".txt", FileMode.Append, FileAccess.Write, FileShare.Delete | FileShare.ReadWrite)
    StreamWriter writer = new StreamWriter(stream, Encoding.GetEncoding("gb2312"))
    writer.WriteLine("================================================================")
    writer.WriteLine(string.Format("Note:/t
{0}", note))
    writer.WriteLine(string.Format("DateTime:/t
{0}/r/n/r/n", DateTime.Now.ToString("yyyyMMddHHmmss")))
    stream.Flush()
    writer.Close()
    stream.Close()
    stream.Dispose()
    writer.Dispose()
  }  public static void SaveException(Exception e)  
{    SaveException(e, string.Empty)
  }  public static void SaveException(Exception e, string memo)  
{    FileStream stream = new FileStream(GetLogDirectory("Common") + DateTime.Now.ToString("yyyy-MM-dd") + ".txt", FileMode.Append, FileAccess.Write, FileShare.Delete | FileShare.ReadWrite)
    StreamWriter writer = new StreamWriter(stream)
    writer.WriteLine("================================================================")
    writer.WriteLine(string.Format("Memo:/t
{0}", memo))
    writer.WriteLine(string.Format("DateTime:/t
{0}", DateTime.Now.ToShortTimeString()))
    writer.WriteLine(string.Format("Message:/t
{0}", e.Message))
    writer.WriteLine(string.Format("StackTrace:/r/n----------/r/n
{0}/r/n----------/r/n/r/n/r/n", e.StackTrace))
    stream.Flush()
    writer.Close()
    stream.Close()
    stream.Dispose()
    writer.Dispose()
  }  public static string GetLogDirectory(string category)  
{    string baseDirectory = string.Empty
    if ((HttpContext.Current != null) && (HttpContext.Current.Server != null))    
{      baseDirectory = HttpContext.Current.Server.MapPath("~")
    }    else    
{      baseDirectory = AppDomain.CurrentDomain.BaseDirectory
    }    if ((baseDirectory[baseDirectory.Length - 1] != &apos
/&apos
) && (baseDirectory[baseDirectory.Length - 1] != &apos
//&apos
))    
{      baseDirectory = baseDirectory + @"/"
    }    baseDirectory = string.Format(@"
{0}Log/
{1}/", baseDirectory, category)
    if (!Directory.Exists(baseDirectory))    
{      Directory.CreateDirectory(baseDirectory)
    }    return baseDirectory
  }}void time_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{  try  
{    if (mulitaddress != null)    
{      LogHelper.SaveNote("进入time_Elapsed")
      //获取定时发送时间      sendTime = Convert.ToString(GetConfigValue("sendTime"))
      LogHelper.SaveNote("sendTime" + sendTime)
      //是否开启定时发送功能      isOpen = GetConfigValue("isOpen")
      int sleeptime = Convert.ToInt32(GetConfigValue("SleepTime"))
      int stoptime = Convert.ToInt32(GetConfigValue("stoptime"))
      //LogHelper.SaveNote("数组长度" + mulitaddress.Count)
      // LogHelper.SaveNote("是否开启定时发送功能" + isOpen + "定时时间" + sendTime + "定时小时数:" + Convert.ToInt32(sendTime.Split(new char[] 
{ &apos
:&apos
 })[0]) + "定时分钟数:" + Convert.ToInt32(sendTime.Split(new char[] 
{ &apos
:&apos
 })[1]))
      if (isOpen == "true")      
{        //现在时间 小时        nowhour = Convert.ToInt32(DateTime.Now.Hour.ToString())
//10        //现在分钟        minutes = Convert.ToInt32(DateTime.Now.Minute.ToString())
//5        //获取发送小时        int sendhour = Convert.ToInt32(sendTime.Split(new char[] 
{ &apos
:&apos
 })[0])
        //获取发送的分钟        int sendMinute = Convert.ToInt32(sendTime.Split(new char[] 
{ &apos
:&apos
 })[1])
        LogHelper.SaveNote("进入定时发送邮件服务! 定时小时为:" + sendhour.ToString() + "定时分钟为:" + sendMinute.ToString() + "现在小时为:" + nowhour.ToString() + "现在定时的分钟为:" + minutes.ToString())
        LogHelper.SaveNote("当前索引的值" + index.ToString())
        if (nowhour == stoptime)        
{          LogHelper.SaveNote("停止时间点到了 邮件停止发送 ！！！")
          index = -1
        }        else        
{          //如果和当前的时间 小时相等 则定时发送邮件          if ((Convert.ToDateTime(DateTime.Now.ToShortTimeString()) >= Convert.ToDateTime(sendTime)) && index < mulitaddress.Count)          
{            index++
            if (index < mulitaddress.Count)            
{              SendEmail(((UserEmail)mulitaddress[index]))
            }            else            
{              LogHelper.SaveNote("发送完毕 当前的索引值为" + index.ToString())
            }          }        }      }      else      
{        //LogHelper.SaveNote("当前索引的值" + index.ToString())
        index++
        if (index < mulitaddress.Count)        
{          SendEmail(((UserEmail)mulitaddress[index]))
        }        else        
{          LogHelper.SaveNote("发送完毕 时间停止")
          time.Enabled = false
          time.Stop()
        }      }      Thread.Sleep(sleeptime)
    }    else      LogHelper.SaveNote("mulitaddress=null")
  }  catch (Exception ex)   
{    LogHelper.SaveNote(ex.ToString())
  }}public ArrayList GetMailAdressName()
{  ArrayList list = new ArrayList()
  string strSQL = "select b.mailAddress, a.mailtemplate,a.title from tg_product as a inner join tg_mailOrder as b on a.ccode=b.ccode where a.createtime=(select max(createtime) from tg_product)"
  SqlDataReader dr = SqlHelper.ExecuteReader(CommandType.Text, strSQL, null)
  if (dr.HasRows)  
{    while (dr.Read())    
{      UserEmail email = new UserEmail()
      email.Mailaddres = dr["mailAddress"].ToString()
      email.Title = dr["title"].ToString()
      email.Contents = dr["mailtemplate"].ToString()
      list.Add(email)
    }  }  return list
}/// 
/// 定义用户邮件 标题 内容 Email地址/// 
public class UserEmail 
{  private string title
  private string contents
  public string Contents  
{    get 
{ return contents
 }    set 
{ contents = value
 }  }  private string mailaddres
  public string Mailaddres  
{    get 
{ return mailaddres
 }    set 
{ mailaddres = value
 }  }  public string Title 
{   get
{return title
}    set 
{ title = value
 }  }}
#region 发送邮件/// 
/// 发送邮件/// 
public void SendEmail(UserEmail user)
{  try  
{    LogHelper.SaveNote("进入SendEmail!!!")
    //邮件服务器    string smtpserver = GetConfigValue("smtpserver")
    //发件人的邮箱名称    string emailuserName = GetConfigValue("emailuserName")
    //发件人的邮箱密码    string emailuserpwd = GetConfigValue("emailuserpwd")
    //邮箱地址    string emailfrom = GetConfigValue("emailfrom")
    int port = Convert.ToInt32(GetConfigValue("serverPort"))
    bool f = true
    //是否经过SSL加密    string isSSL = GetConfigValue("SSL")
    if (isSSL == "true")    
{      f = true
    }    else    
{      f = false
    }    LogHelper.SaveNote("发件人的邮箱名称" + emailuserName + "邮件地址(emailFrom)" + emailfrom + "收件人" + user.Mailaddres)
    SendEmailToUser(smtpserver, port, f, user.Mailaddres, null, emailuserName, emailuserpwd, emailfrom, user.Title,user.Contents)
    LogHelper.SaveNote("Send Mail Success")
  }  //获取异常信息  catch (Exception error)  
{    //写入异常信息    using (StreamWriter sw = new StreamWriter("F://MailErrorlog.txt", true, System.Text.Encoding.UTF8))    
{      sw.WriteLine(DateTime.Now.ToString() + "：")
      sw.WriteLine("Exception 异常信息如下.................")
      sw.WriteLine(error.ToString())
      sw.WriteLine("---------------------------------------------")
      sw.Close()
    }  }}
#endregion
#region 利用.Net自带类(SmtpClient) 发送邮件/// 
/// 利用.Net自带类(SmtpClient) 发送邮件/// 
/// 邮件服务器
/// 用户名(邮箱名称)
/// 密码
/// 是否经过SSL加密
/// 邮件服务器端口(没有加密 一般都是25)
/// 发件人
/// 收件人
/// 主题
/// 内容
/// 发送多人 收件人的邮箱地址以逗号隔开
/// 发送的附件名称 没有附件则为null or ""
public void SendEmailToUser(string stmpserver,int port,bool f, string Mulitaddress, string attachmentName, string username, string pwd, string strfrom, string subject, string body)
{  string ErrorLog = GetConfigValue("ErrorLog")
  SmtpClient smtp = new SmtpClient()
  //发送邮件的方式  smtp.DeliveryMethod = SmtpDeliveryMethod.Network
  //指定邮件服务器  smtp.Host = stmpserver
  //Gmail QQ stmp ssl加密使用的端口   smtp.Port = port
  smtp.EnableSsl = f
 
//true 经过ssl加密   //验证发件人的身份 用户名(邮件地址和密码)  smtp.Credentials = new System.Net.NetworkCredential(username, pwd)
  //初始化信息(来自 接收人)  MailMessage _mailmessage = new MailMessage()
  //_mailmessage.To = strto
  //发送多个人 接收人邮件地址以,隔开  _mailmessage.From = new MailAddress(strfrom)
  _mailmessage.To.Add(Mulitaddress)
  //如果发送失败，SMTP 服务器将发送 失败邮件通知  _mailmessage.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure
  //优先级  _mailmessage.Priority = MailPriority.High
  //发送主题  _mailmessage.Subject = subject
  //有附件则添加附件  if (!string.IsNullOrEmpty(attachmentName))  
{    System.Net.Mail.Attachment attch = new System.Net.Mail.Attachment(attachmentName)
    _mailmessage.Attachments.Add(attch)
  }  //邮件主题编码  _mailmessage.SubjectEncoding = System.Text.Encoding.UTF8
  //指定发送的格式 (Html)  _mailmessage.IsBodyHtml = true
  //指定发送邮件的编码  _mailmessage.BodyEncoding = System.Text.Encoding.UTF8
  //指定邮件内容  _mailmessage.Body = body
  //发送邮件  try  
{    smtp.Send(_mailmessage)
  }  catch (Exception ex)  
{    using (StreamWriter writer = new StreamWriter(ErrorLog+"://MailErrorlog.txt", true, System.Text.Encoding.UTF8))    
{      writer.WriteLine("---------------------------------------------")
      writer.WriteLine("SendEmail方法发送邮件错误日志................")
      writer.WriteLine(ex.ToString())
      writer.Flush()
      writer.Close()
    }  }}
#endregion
#region 获取邮件配置节点的值/// 
/// 加载相应配置文件 并按节点名称获取对应的值/// 
/// 当前节点的名称
/// 返回当前节点名称所对应的值
public string GetConfigValue(string target)
{  string configpath=System.Windows.Forms.Application.StartupPath.ToString() + "/Email.config"
  return GetConfigValue(configpath, target)
}/// 
/// 根据节点名称获取配置文件对应的值(邮件配置信息)/// 
/// 配置文件路径
/// 要获取配置节点的名称
/// 返回当前节点名称所对应的值
public string GetConfigValue(string configpath, string target)
{  XmlDocument doc = new XmlDocument()
  //加载文件路径s  doc.Load(configpath)
  //获取当前节点的根节点  XmlElement root = doc.DocumentElement
  //获取当前节点下所有匹配子节点元素  XmlNodeList xmlnode = root.GetElementsByTagName(target)
  //返回值  return xmlnode[0].InnerXml
}
#endregion//服务结束protected override void OnStop()
{  time.Enabled = false
}