localmailservice.cs

《征服Ajax》原书的例题源码

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net;
using System.Net.Mail;
using Db;
using System.Text;

namespace Mail
{
	/// <summary>
	/// Summary description for LocalMailService
	/// </summary>
	public class LocalMailService : MailService
	{
		private ServerSetting _smtp = new ServerSetting();
		private ServerSetting _pop3 = new ServerSetting();
		public LocalMailService(ServerSetting smtp, ServerSetting pop3)
		{
			this._smtp = smtp;
			this._pop3 = pop3;
		}

		#region MailService Members

		public bool SendMail(string from, string to, string subject, string body)
		{
			try
			{
				MailMessage msg = new MailMessage(from, to, subject, body);

				SmtpClient client = new SmtpClient(_smtp.Host);

				CredentialCache cache = new CredentialCache();
				cache.Add(_smtp.Host, _smtp.Port, "Basic", new NetworkCredential(_smtp.Username, _smtp.Password, _smtp.Host));
				client.Credentials = cache;

				msg.IsBodyHtml = true;
				msg.BodyEncoding = Encoding.UTF8;

				client.Send(msg);

                // TODO: 获取邮件大小
                int size = msg.Headers.ToString().Length + msg.Body.Length;
                size = (int)Math.Ceiling((double)(size / 1024));

				// 邮件信息存入数据库
				DbService dbService = new LocalDbService();
                dbService.InsertMail(msg.From.Address, msg.To[0].Address, msg.Subject, msg.Body, 3, size);

			}
			catch (Exception)
			{
				return false;
			}
			return true;
		}

		public bool Test()
		{
			Pop3MimeClient client = new Pop3MimeClient(_pop3.Host, _pop3.Port, false, _pop3.Username + "@" + _pop3.Host, _pop3.Password);
			client.ReadTimeout = 60000;

			try
			{
				client.Connect();
			}
			catch (Exception)
			{
				return false;
			}
			finally
			{
				try
				{
					client.Disconnect();
				}
				catch (Exception)
				{
					
				}
			}
			return true;
		}

		public bool ReceiveMail()
		{
			Pop3MimeClient client = new Pop3MimeClient(_pop3.Host, _pop3.Port, false, _pop3.Username + "@" + _pop3.Host, _pop3.Password);
			client.ReadTimeout = 60000;

			try
			{
				client.Connect();

				int numberOfMailsInMailbox, mailboxSize;
				client.GetMailboxStats(out numberOfMailsInMailbox, out mailboxSize);

				RxMailMessage msg;
				int downloadNumberOfEmails;
				int maxDownloadEmails = 99;
				if (numberOfMailsInMailbox < maxDownloadEmails)
				{
					downloadNumberOfEmails = numberOfMailsInMailbox;
				}
				else
				{
					downloadNumberOfEmails = maxDownloadEmails;
				}
				for (int i = 1; i <= downloadNumberOfEmails; i++)
				{
					client.GetEmail(i, out msg);
					if (msg != null)
					{
                        // 获取邮件大小
                        int size = client.GetEmailSize(i);
						size = (size + 512) / 1024;

						// 邮件信息存入数据库
						DbService dbService = new LocalDbService();
						dbService.InsertMail(msg.From.Address, msg.To[0].Address, msg.Subject, msg.Body, 0, size);

						// 从服务器上删除
						client.DeleteEmail(i);
					}
				}
			}
			catch (Exception)
			{
				return false;
			}
			finally
			{
				try
				{
					client.Disconnect();
				}
				catch (Exception)
				{					
				}
			}

			return true;
		}

		#endregion
	}
}