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在啟明星helpdesk7.0版本里，新增了一個(gè)功能：郵件提交。所謂郵件提交就是用戶直接發(fā)送郵件到IT。當(dāng)然IT通常會公開一個(gè)公共郵件，例如support@dotnetcms.org.下面介紹一下啟明星Helpdesk郵件提交的功能介紹，稍后介紹實(shí)現(xiàn)原理。

1.用戶通過郵件發(fā)送郵件到 test@dotnetcms.org 提交問題。

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2.系統(tǒng)接收到郵件后，將會自動發(fā)出一封回復(fù)。回復(fù)的時(shí)間間隔最長10分鐘。郵件會提醒用戶您的郵件已經(jīng)收到。用戶可以直接回復(fù)郵件或點(diǎn)擊鏈接查看問題或補(bǔ)充。

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3.管理員/用戶也可以通過helpdesk直接回復(fù),這些回復(fù)會以郵件的形式告訴給用戶。

4.用戶也可以通過helpdesk查看提交的問題。

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技術(shù)實(shí)現(xiàn)：

在整個(gè)郵件提交過程中，核心部分是郵件的接收和發(fā)送。目前幾乎所有郵件都支持SMTP/POP協(xié)議。所有使用這個(gè)協(xié)議就可以獲取或者發(fā)送郵件。

另外，在我們實(shí)現(xiàn)的過程中，部分企業(yè)使用的是Exchange2007.對于微軟這個(gè)郵件服務(wù)器，許多企業(yè)默認(rèn)是不啟用SMTP/POP協(xié)議，微軟使用的Exchange

web service（EWS）接口發(fā)送或者接收郵件，所以我們提供了兩種方式：SMTP/POP方式和EWS方式。

（注：對于Exchange2003，微軟還支持webdav方式，但是在exchange2007不推薦使用該方式。所以我們沒有再考慮exchange2003情況，如果您使用的是exchange2003，可以開啟SMTP/POP協(xié)議）

SMTP發(fā)送郵件核心代碼：

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SmtpClient smtpClient = new SmtpClient();MailMessage message = new MailMessage();MailAddress fromAddress = new MailAddress(mail, friendlyname);smtpClient.Host = smtp;smtpClient.Port = int.Parse(smtp_port);NetworkCredential nc = new NetworkCredential(username, password);smtpClient.UseDefaultCredentials = false;smtpClient.Credentials = nc;smtpClient.EnableSsl = smtp_use_ssl;message.From = fromAddress;if (email != ""){message.To.Add(_email);}if (_sendto != ""){message.CC.Add(_sendto);}message.Subject = title;message.IsBodyHtml = true;message.Body = content;smtpClient.Send(message);

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SMTP接收郵件

接收郵件使用了OpenPOP.dll

http://files.cnblogs.com/mqingqing123/OpenPop.rar

using (Pop3Client client = new Pop3Client()){client.Connect(pop, int.Parse(pop_port), pop_use_ssl);client.Authenticate(username, password);int messageCount = client.GetMessageCount();List<OpenPop.Mime.Message> allMessages;if (messageCount > maxcount){allMessages = new List<OpenPop.Mime.Message>(maxcount);Max = maxcount;}else{allMessages = new List<OpenPop.Mime.Message>(messageCount);Max = messageCount;}

?處理郵件的代碼

public static void ProcessEmail(OpenPop.Mime.Message msg, DateTime baseTime){email = msg.Headers.From.Address;createdate = msg.Headers.DateSent.AddHours(timezone);title = msg.Headers.Subject;MessagePart html = msg.FindFirstHtmlVersion();if (html != null){contents = html.GetBodyAsText();}}

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采用EWS方式：

public static void GetOutlookEmail(){DateTime basicTime = DateTime.Now.AddMinutes(-10);string username = Helper.GetWebconfig("username");string password = Helper.GetWebconfig("password");string domain = Helper.GetWebconfig("domain");string url = Helper.GetWebconfig("exchangewebservice");int timezone = int.Parse(Helper.GetWebconfig("timezone"));int maxcount = int.Parse(Helper.GetWebconfig("every_time_fetch_max_count"));ExchangeServiceBinding esb = new ExchangeServiceBinding();esb.Credentials = new NetworkCredential(username, password, domain);esb.Url = url;FindItemType findItemRequest = new FindItemType();findItemRequest.Traversal = ItemQueryTraversalType.Shallow;ItemResponseShapeType itemProperties = new ItemResponseShapeType();獲取郵件地址PathToExtendedFieldType PidTagSenderSmtpAddress = new PathToExtendedFieldType();PidTagSenderSmtpAddress.PropertyTag = "0x5D01";PidTagSenderSmtpAddress.PropertyType = MapiPropertyTypeType.String;// Define which item properties are returned in the responseitemProperties.BaseShape = DefaultShapeNamesType.AllProperties;findItemRequest.ItemShape = itemProperties; // Add properties shape to requestitemProperties.AdditionalProperties = new BasePathToElementType[1];itemProperties.AdditionalProperties[0] = PidTagSenderSmtpAddress;// Identify which folders to search to find itemsDistinguishedFolderIdType[] folderIDArray = new DistinguishedFolderIdType[1];folderIDArray[0] = new DistinguishedFolderIdType();folderIDArray[0].Id = DistinguishedFolderIdNameType.inbox;// Add folders to requestfindItemRequest.ParentFolderIds = folderIDArray;//Create unread only restriction --------------------------RestrictionType restriction = new RestrictionType();IsEqualToType isEqualTo = new IsEqualToType();PathToUnindexedFieldType pathToFieldType = new PathToUnindexedFieldType();pathToFieldType.FieldURI = UnindexedFieldURIType.messageIsRead;FieldURIOrConstantType constantType = new FieldURIOrConstantType();ConstantValueType constantValueType = new ConstantValueType();constantValueType.Value = "0";constantType.Item = constantValueType;isEqualTo.Item = pathToFieldType;isEqualTo.FieldURIOrConstant = constantType;restriction.Item = isEqualTo;findItemRequest.Restriction = restriction;FindItemResponseType findItemResponse = esb.FindItem(findItemRequest);FindItemResponseMessageType folder = (FindItemResponseMessageType)findItemResponse.ResponseMessages.Items[0];ArrayOfRealItemsType folderContents = new ArrayOfRealItemsType();folderContents = (ArrayOfRealItemsType)folder.RootFolder.Item;ItemType[] items = folderContents.Items;int count = items.Length;int Max = 0;if (count > maxcount){Max=maxcount;}else{Max = count;}int c = 0;for (int i = Max; c < Max; i--){try{ProcessEmail(items[i-1], basicTime);}catch(Exception ex){WriteLog(ex.ToString());}c++;}}

?最后處理獲取的郵件

// 獲取郵件的內(nèi)容 //GetItemType g = new GetItemType(); g.ItemShape = new ItemResponseShapeType(); g.ItemShape.BaseShape = DefaultShapeNamesType.AllProperties;g.ItemIds = new BaseItemIdType[] { itemType.ItemId }; GetItemResponseType p_mailResponse = esb.GetItem(g); ArrayOfResponseMessagesType arrMail = p_mailResponse.ResponseMessages; ResponseMessageType[] responseMessages = arrMail.Items;foreach (ResponseMessageType respmsg in responseMessages){if (respmsg is ItemInfoResponseMessageType){ItemInfoResponseMessageType createItemResp = (respmsg as ItemInfoResponseMessageType);ArrayOfRealItemsType aorit = createItemResp.Items;foreach (MessageType myMessage in aorit.Items){if (myMessage.Body.BodyType1 == BodyTypeType.Text){contents = myMessage.Body.Value.Replace(Environment.NewLine, "<br />");}else{contents = myMessage.Body.Value;}if (myMessage.From != null){email = myMessage.From.Item.EmailAddress;}}}}

?采用EWS發(fā)送郵件的核心代碼

emailMessage.Subject = title; emailMessage.Body = new BodyType(); emailMessage.Body.BodyType1 = BodyTypeType.HTML; //specify HTML or plain emailMessage.Body.Value = contents;CreateItemType emailToSave = new CreateItemType(); emailToSave.Items = new NonEmptyArrayOfAllItemsType(); emailToSave.Items.Items = new ItemType[1]; emailToSave.Items.Items[0] = emailMessage; emailToSave.MessageDisposition = MessageDispositionType.SendAndSaveCopy; emailToSave.MessageDispositionSpecified = true;try{CreateItemResponseType response = esb.CreateItem(emailToSave);ResponseMessageType[] rmta = response.ResponseMessages.Items;}catch(Exception ex){WriteLog(ex.ToString()); }

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轉(zhuǎn)載于:https://www.cnblogs.com/mqingqing123/archive/2013/01/14/2859173.html

總結(jié)

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