POP收邮件方法

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private void ReceivEmail(MailAccount mailAccount)
{
#region 开始获取邮件

#region 获取账号信息
MailAccountManage mam = new MailAccountManage();
DataTable tb = mam.GetTable(mailAccount.id);
strlogin = tb.Rows[0]["EmailAccount"].ToString();
strpassword = mailAccount.EmailPass;

pophost = tb.Rows[0]["PopHost"].ToString();
intport = Convert.ToInt32(tb.Rows[0]["PopPort"]);
if (Convert.ToBoolean(tb.Rows[0]["PopSSL"]) == true)
pop3usessl = true;
else
pop3usessl = false;
#endregion

using (POP3_Client pop3 = new POP3_Client())
{
try
{
#region 与服务器进行身份验证
//与pop3服务器建立连接
pop3.Connect(pophost, intport, pop3usessl);
//验证身份,邮件如果太多，建议及时清理邮箱
pop3.Authenticate(strlogin, strpassword, false);
#endregion

#region 获得邮件基础信息列表
//获取邮件信息列表
POP3_ClientMessageCollection infos = pop3.Messages;
#endregion

#region 临时处理--仅仅允许查看最开始的100条记录
int endNums = 0;
if (infos.Count > 1000)
endNums = infos.Count - 1000;
#endregion

for (int index = infos.Count - 1; index > endNums; index--)
{

#region 判断邮件是否在数据库中已经存在
POP3_ClientMessage info = infos[index];
//每封email会有一个在pop3服务器范围内唯一的id,检查这个id是否存在就可以知道以前有没有接收过这封邮件
if (mM.JudgeEmailHasDownload(info.UID))
continue;
#endregion

#region 获取这封邮件的内容
//获取这封邮件的内容
byte[] bytes;
try
{
bytes = info.MessageToByte();
}
catch (Exception ex)
{
WriteLog("邮箱[" + strlogin + "]收取邮件里获取内容时发生错误！错误信息：[" + ex.ToString() + "]");
continue;
}
#endregion

#region 解析邮件内容并存入数据库中
Mail curMail = new Mail();
//解析从pop3服务器发送过来的邮件信息
Mime m;
try
{
m = Mime.Parse(bytes);
}
catch (Exception ex)
{
WriteLog("邮箱[" + strlogin + "]收取邮件解析邮件内容时发生错误！错误信息：[" + ex.ToString() + "]");
continue;
}
#endregion

int insertMailID = 0;

if (m != null)
{
#region 解析邮件内容并存入数据库中
string mailfrom = "";
string mailfromname = "";
if (m.MainEntity.From != null)
{
for (int i = 0; i < m.MainEntity.From.Mailboxes.Length; i++)
{
if (i == 0)
{
mailfrom = (m.MainEntity.From).Mailboxes[i].EmailAddress;
}
else
{
mailfrom += string.Format(",{0}", (m.MainEntity.From).Mailboxes[i].EmailAddress);
}
mailfromname = (m.MainEntity.From).Mailboxes[0].DisplayName != ""
? (m.MainEntity.From).Mailboxes[0].DisplayName
: (m.MainEntity.From).Mailboxes[0].LocalPart;
}
}
string mailto = "";
string mailtotocollection = "";
if (m.MainEntity.To != null)
{
mailtotocollection = m.MainEntity.To.ToAddressListString();

for (int i = 0; i < m.MainEntity.To.Mailboxes.Length; i++)
{
if (i == 0)
{
mailto = (m.MainEntity.To).Mailboxes[i].EmailAddress;
}
else
{
mailto += string.Format(",{0}", (m.MainEntity.To).Mailboxes[i].EmailAddress);
}

}
}
curMail.MailUID = info.UID;
curMail.Title = m.MainEntity.Subject;
curMail.FromAddress = mailfrom;
curMail.ToAddress = strlogin;
//if (m.MainEntity.To == null)
// curMail.ToAddress = strlogin;
//else
// curMail.ToAddress = m.MainEntity.To.Mailboxes[0].EmailAddress;
if (m.MainEntity.Date.Year < 1753)
curMail.SenderDate = DateTime.Now;
else
curMail.SenderDate = m.MainEntity.Date;
curMail.Content = m.MimeEntities.Length;
if (m.BodyHtml != null)
{
curMail.Body = m.BodyHtml;
curMail.HTMLFormat = true;
}
else
{
curMail.Body = m.BodyText;
curMail.HTMLFormat = false;
}
if (m.Attachments.Length > 0)
{
curMail.AttachmentFlag = true;
}
curMail.ReaderFlag = false;
curMail.ReplyFlag = false;
curMail.FolderID = 1;
curMail.MailAccountId = Convert.ToInt32(tb.Rows[0]["id"]);
curMail.MailType = true;
insertMailID = mM.AddModif(curMail, true);
#endregion
}
if (insertMailID != -1)
{
#region 成功插入数据库后再获取附件
Attachments curAttchment = new Attachments();
//获取附件
foreach (MimeEntity entry in m.Attachments)
{
string attchmentFilename = entry.ContentDisposition_FileName; //获取文件名称
if (attchmentFilename == null || attchmentFilename == "")
continue;
//存储在服务器上的文件，避免名字冲突，采用格式化的命名规则
string serverFileName = DateTime.Now.ToString("yyyyMMddhhmmss ") + "." + GetExt(attchmentFilename);
string serverPhysicalPath = Config.ServerPhysicalPath;
string serverAttachmentsFloder = Config.ServerAttachmentsFloder;
string serverFileFloder = DateTime.Now.ToString("yyyyMM"); //存储到服务器上的文件夹
string serverFilePath = serverPhysicalPath + serverAttachmentsFloder + "\\" + serverFileFloder + "\\" + serverFileName;
//判断存储附件目录是否存在
if (!File.Exists(serverPhysicalPath + serverAttachmentsFloder))
{
try
{
Directory.CreateDirectory(serverPhysicalPath + serverAttachmentsFloder);
}
catch (Exception excreat)
{
WriteLog("邮箱[" + strlogin + "]创建附件目录时出错！错误信息：[" + excreat.ToString() + "]");
}
}
//判断存储当前邮件的目录是否存在
if (!File.Exists(serverPhysicalPath + serverAttachmentsFloder + "\\" + serverFileFloder))
{
try
{
Directory.CreateDirectory(serverPhysicalPath + serverAttachmentsFloder + "\\" + serverFileFloder);
}
catch (Exception excreat)
{
WriteLog("邮箱[" + strlogin + "]创建附件目录时出错！错误信息：[" + excreat.ToString() + "]");
}
}
byte[] data = entry.Data;
try
{
FileStream pfilestream = null;
pfilestream = new FileStream(serverFilePath, FileMode.Create);
pfilestream.Write(data, 0, data.Length);
pfilestream.Close();
}
catch (Exception excreat)
{
WriteLog("邮箱[" + strlogin + "]创建附件时出错！错误信息：[" + excreat.ToString() + "]");
}
curAttchment.MailID = insertMailID;
curAttchment.Url = serverAttachmentsFloder + "/" + serverFileFloder + "/" + serverFileName;
curAttchment.Name = attchmentFilename;
curAttchment.Content = entry.Data.Length;
curAttchment.Type = GetExt(attchmentFilename);
AttachmentsManage aM = new AttachmentsManage();
aM.AddModif(curAttchment, true);
}
#endregion
}
}
//WriteLog("接收邮件完成，共接收了邮件" + mailcount + ",完成时间为：【" + DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss ") + "】");
}
catch (POP3_ClientException ex)
{
WriteLog("邮箱[" + strlogin + "]接收失败！错误信息：[" + ex.ToString() + "]");
}
pop3.Dispose();
}

#endregion
}