/// <summary>
/// 获取待发邮件列表
/// </summary>
private void GetWaitSendMail()
{
List <UserMailViewEntity> mailList;
if (mailQueue.Count == 0 && !IsExistsMailCacheName())
{
lock (obj)
{
if (mailQueue.Count == 0 && !IsExistsMailCacheName())
{
LogUtilExpand.WriteLog("尝试从数据库提取待发邮件列表...");
mailList = bllMail.QueryViewWaitSendMailList();
if (mailList != null)
{
LogUtilExpand.WriteLog("从数据库取出" + mailList.Count + "封发邮件，成功放入邮件发送队列");
foreach (UserMailViewEntity entity in mailList)
{
mailQueue.Enqueue(entity);
}
}
else
{
LogUtilExpand.WriteLog("从数据库取出0封邮件");
SetAbsoluteExpirationCache(cacheTimeoutName, 1, cacheTimeoutMinute);
}
}
}
}
}
/// <summary>
/// 停止发送邮件
/// </summary>
public void Stop()
{
int stopThreadNum = 0;
if (mailSendThread != null && cts != null)
{
LogUtilExpand.WriteLog("邮件服务尝试终止...");
cts.Cancel();
for (int loop = 0; loop < mailSendThread.Length; loop++)
{
try
{
mailSendThread[loop].Wait();
}
catch (AggregateException ex)
{
ex.Handle(e => e is OperationCanceledException);
LogUtilExpand.WriteLog("线程" + (loop + 1) + "成功终止");
stopThreadNum++;
}
catch (Exception ex)
{
LogUtilExpand.WriteLog("线程" + (loop + 1) + "终止失败(失败原因如下：)");
LogUtilExpand.WriteLog(ex);
}
}
if (successMailNum > 0)
{
LogUtilExpand.WriteLog("邮件服务程序在终止前成功发送" + successMailNum + "封邮件");
}
if (stopThreadNum == mailSendThread.Length)
{
mailSendThread = null;
cts = null;
successMailNum = 0;
LogUtilExpand.WriteLog("线程已全部终止");
}
else
{
LogUtilExpand.WriteLog("成功终止" + stopThreadNum + "个线程，但有" + (mailSendThread.Length - stopThreadNum) + "个线程终止失败");
}
}
}
/// <summary>
/// 发送邮件方法
/// </summary>
/// <param name="ct"></param>
/// <param name="threadNum"></param>
/// <returns></returns>
private void StartSendEmail(CancellationToken ct, int threadNum)
{
UserMailViewEntity mailEntity;
while (true)
{
if (ct.IsCancellationRequested)
{
ct.ThrowIfCancellationRequested();
}
else
{
//如果邮件队列为空，休眠指定时间，尝试获取邮件列表
if (mailQueue.Count == 0)
{
if (successMailNum > 0)
{
int count = successMailNum;
Interlocked.Add(ref successMailNum, -count);
LogUtilExpand.WriteLog("邮件服务程序成功发送" + count + "封邮件");
}
//写这么多，主要是终止服务时，尽可能早的检测到
if (ct.IsCancellationRequested)
{
ct.ThrowIfCancellationRequested();
}
Thread.Sleep(sendIntervalMinute);
if (ct.IsCancellationRequested)
{
ct.ThrowIfCancellationRequested();
}
GetWaitSendMail();
}
if (ct.IsCancellationRequested)
{
ct.ThrowIfCancellationRequested();
}
if (mailQueue.TryDequeue(out mailEntity))
{
SendMailMessage(mailEntity, companyEmailAccountList[threadNum]);
}
}
}
}
/// <summary>
/// 开始发送邮件
/// </summary>
public void Start()
{
try
{
if (mailSendThread == null && cts == null)
{
InitMailThread();
}
for (int loop = 0; loop < mailSendThread.Length; loop++)
{
if (mailSendThread[loop].Status == TaskStatus.Created)
{
mailSendThread[loop].Start();
LogUtilExpand.WriteLog("线程" + (loop + 1) + "开始启动");
}
}
}
catch (Exception ex)
{
LogUtilExpand.WriteLog("邮件服务启动失败（异常信息如下)");
LogUtilExpand.WriteLog(ex.Message);
}
}
/// <summary>
/// 初始化邮件发送线程
/// </summary>
private void InitMailThread()
{
List <CompanyEmailAccountEntity> emailAccountList = this.GetCompanyEmailAccountList();
companyEmailAccountList = emailAccountList;
if (emailAccountList != null)
{
cts = new CancellationTokenSource();
int looptimes = emailAccountList.Count;
mailSendThread = new Task[looptimes];
for (int loop = 0; loop < looptimes; loop++)
{
mailSendThread[loop] = new Task(() => StartSendEmail(cts.Token, 1), cts.Token);
}
LogUtilExpand.WriteLog("从数据库获取" + emailAccountList.Count + "个公司邮箱账号,接下来将开启" + emailAccountList.Count + "个邮件发送线程，" + (sendIntervalMinute / 60 / 1000) + "分钟后将开始发送邮件");
}
else
{
LogUtilExpand.WriteLog("（异常）：未设置公司邮箱账号");
}
}
protected override void OnStop()
{
mailMgt.Stop();
LogUtilExpand.WriteLog("==============================邮件服务日志终止===============================");
LogUtil.WriteLog("");
}
protected override void OnStart(string[] args)
{
LogUtilExpand.WriteLog("==============================邮件服务日志启动===============================");
mailMgt.Start();
}
/// <summary>
/// 发送邮件
/// </summary>
/// <param name="content"></param>
/// <param name="attachmentPath"></param>
/// <param name="email"></param>
public void SendMailMessage(UserMailViewEntity mailEntity, CompanyEmailAccountEntity emailAccountEntity)
{
string remark = string.Empty;
#region 发送前错误判断 (提前判断错误，会很大提升性能)
if (string.IsNullOrEmpty(mailEntity.EMail))
{
remark = "当前用户没有填写邮箱";
bllMail.UpdateSendStatus(mailEntity.MailID, remark, UserMailStatus.SendFail);
return;
}
if (!mailFormatReg.IsMatch(mailEntity.EMail))
{
remark = "当前用户邮箱格式错误";
bllMail.UpdateSendStatus(mailEntity.MailID, remark, UserMailStatus.SendFail);
return;
}
if (string.IsNullOrEmpty(mailEntity.BookListPath))
{
remark = "当前所属文章附件没有设置文件路径";
bllMail.UpdateSendStatus(mailEntity.MailID, remark, UserMailStatus.SendFail);
return;
}
#endregion
MailMessage message = null;
SmtpClient client = null;
Attachment myAttachment = null;
try
{
//设置 收件人和发件人地址
MailAddress from = new MailAddress(emailAccountEntity.EmailName, sendName);
MailAddress to = new MailAddress(mailEntity.EMail, mailEntity.LoginName);
message = new MailMessage(from, to);
string attachPath = attachDomain + mailEntity.BookListPath;
if (File.Exists(attachPath))
{
FileInfo fileInfo = new FileInfo(attachPath);
myAttachment = new Attachment(attachPath, MediaTypeNames.Application.Octet);
//MIME协议下的一个对象，用以设置附件的创建时间，修改时间以及读取时间
System.Net.Mime.ContentDisposition disposition = myAttachment.ContentDisposition;
disposition.CreationDate = File.GetCreationTime(attachPath);
disposition.ModificationDate = File.GetLastWriteTime(attachPath);
disposition.ReadDate = File.GetLastAccessTime(attachPath);
disposition.FileName = fileInfo.Name;;
}
else
{
remark = "该附件存在";
bllMail.UpdateSendStatus(mailEntity.MailID, remark, UserMailStatus.SendFail);
return;
}
message.Attachments.Add(myAttachment);
message.Subject = "开卷网络附带书单";
message.Body = "书单测试主体";
message.BodyEncoding = Encoding.GetEncoding("gb2312");
message.IsBodyHtml = true;
message.Priority = MailPriority.High;
client = new SmtpClient();
client.Timeout = 100000;
client.Host = emailAccountEntity.EmailSMTPHost;
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential(emailAccountEntity.EmailName, emailAccountEntity.EmailPassword);
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.Send(message);
remark = "发送成功";
bllMail.UpdateSendStatus(mailEntity.MailID, remark, UserMailStatus.SendSuccess);
Interlocked.Increment(ref successMailNum);
}
catch (Exception ex)
{
remark = "发送失败";
bllMail.UpdateSendStatus(mailEntity.MailID, remark, UserMailStatus.SendFail);
LogUtilExpand.WriteLog("邮件ID：" + mailEntity.MailID + "发送失败(异常信息如下：)");
LogUtilExpand.WriteLog(ex);
if (message != null)
{
message.Dispose();
}
if (client != null)
{
client.Dispose();
}
}
}
