【helpdesk】启明星helpdesk7.0版本里，实现邮件提交功能介绍和原理

 

在启明星helpdesk7.0版本里，新增了一个功能：邮件提交。所谓邮件提交就是用户直接发送邮件到IT。当然IT通常会公开一个公共邮件，例如support@dotnetcms.org.下面介绍一下启明星Helpdesk邮件提交的功能介绍，稍后介绍实现原理。

1.用户通过邮件发送邮件到 test@dotnetcms.org 提交问题。

 

2.系统接收到邮件后，将会自动发出一封回复。回复的时间间隔最长10分钟。邮件会提醒用户您的邮件已经收到。用户可以直接回复邮件或点击链接查看问题或补充。

 

3.管理员/用户也可以通过helpdesk直接回复,这些回复会以邮件的形式告诉给用户。

4.用户也可以通过helpdesk查看提交的问题。

 

 

技术实现：

在整个邮件提交过程中，核心部分是邮件的接收和发送。目前几乎所有邮件都支持SMTP/POP协议。所有使用这个协议就可以获取或者发送邮件。

另外，在我们实现的过程中，部分企业使用的是Exchange2007.对于微软这个邮件服务器，许多企业默认是不启用SMTP/POP协议，微软使用的Exchange

web service（EWS）接口发送或者接收邮件，所以我们提供了两种方式：SMTP/POP方式和EWS方式。

（注：对于Exchange2003，微软还支持webdav方式，但是在exchange2007不推荐使用该方式。所以我们没有再考虑exchange2003情况，如果您使用的是exchange2003，可以开启SMTP/POP协议）

SMTP发送邮件核心代码：

 

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);

 

SMTP接收邮件

接收邮件使用了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;}

 处理邮件的代码

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();}}

 

 

 

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();获取邮件地址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++;}}

 最后处理获取的邮件

// 获取邮件的内容 //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发送邮件的核心代码

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()); }

 

转载于:https://www.cnblogs.com/mqingqing123/archive/2013/01/14/2859173.html

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