CN103516592A - Mail attachment automatic previewing method and system based on IMAP protocol - Google Patents
Mail attachment automatic previewing method and system based on IMAP protocol Download PDFInfo
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- CN103516592A CN103516592A CN201310394258.XA CN201310394258A CN103516592A CN 103516592 A CN103516592 A CN 103516592A CN 201310394258 A CN201310394258 A CN 201310394258A CN 103516592 A CN103516592 A CN 103516592A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/07—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail characterised by the inclusion of specific contents
- H04L51/08—Annexed information, e.g. attachments
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Abstract
The embodiment of the invention discloses a mail attachment automatic previewing method. Content of a mail attachment is decoded by a mail server, converted into a picture format, inserted into an original mail again, sent to a client terminal and presented to a user. The embodiment of the invention further discloses a mail attachment automatic previewing system. According to the mail attachment automatic previewing method and system, the user can preview the content of the attachment without downloading the attachment and can completely get rid of limitation of a browser, and the mail attachment automatic previewing method and system are suitable for meeting the requirements for receiving, sending and previewing mails of various mobile terminals.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the automatic method for previewing of a kind of Email attachment based on IMAP agreement and system.
Background technology
Existing E-mail receiver/send is mainly by software client and two kinds of modes of web browser, and the latter is because its operation is convenient, user only need log in by conventional web browser the homepage of mail service provider, can carry out mail transmission/reception, and develop into the mail transmission/reception mode of customer volume maximum rapidly.And in business electronic mail field, because it requires real-time, multiple terminals is compatible, software client receiving and dispatching mail remains the main flow of business electronic mail transmission/reception, and the most frequently used mail transmission/reception agreement of software client is exactly IMAP agreement.
IMAP(Internet Mail Access Protocol, interactive email access agreement) be that Stanford University obtains agreement at a kind of mail of the research and development of exploitation in 1986.Mail Clients (for example MS Outlook Express) can obtain the information of mail from mail server by IMAP agreement, downloads mail etc.Current widely used IMAP agreement is the communication protocol that RFC3501 standard document mode is formulated, after client connection server, by shaking hands, then by command interaction, obtain the attribute of mailbox file, the attribute of mail, client can be obtained the information of mail.
But, IMAP agreement is the communication protocol for the mail on local mail client-access remote server, agreement is responsible for resolving the mail of MIME structure, do not need to understand in detail the annex in mail, and every kind of file has its specific structure, need specific software just can check its real content, how agreement not regulation checks attachment content, therefore by IMAP agreement, be, to check the Email attachment with labyrinth.When the mail obtaining comprises annex, if user need to check its content, must first download attachment content, and need corresponding reader just can open the attachment, if computer is not installed this reader, just must first download device, after installation, just can check annex.
In order to make up above deficiency, existing part mail server starts to provide Mail Preview function, and it is mainly for web browser user, and mail server calls corresponding decoder, the annex of mail is converted to html form, makes user can on browser, directly browse the content of annex.If annex is word document, mail server is converted into html form, and is presented at the relevant position of browser, and user does not need corresponding decoding software, can browse its content.But for the user who uses software client, its software client may be arranged in the terminals such as mobile phone or multimedia television, is subject to function to limit its software client and may have built-in browser function; And, for the larger annex of file volume, as video file etc., even if be decoded into the form that html browser can be play-overed, also need larger network traffics and buffer time, be unfavorable for the timely preview of software client user to attachment content.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, the automatic method for previewing of a kind of Email attachment based on IMAP agreement and system are provided, Email attachment can be converted to image file, and send to Mail Clients by IMAP agreement, described Mail Clients is presented to user by message body and annex preview picture, and its Mail Clients only needs extremely low hardware supports and network traffics can complete reception and the preview function of mail.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of Email attachment based on IMAP agreement automatic method for previewing, comprising:
S1, Mail Clients are communicated by letter with mail server by IMAP agreement, obtain the mandate of access respective mail account, and send the instruction of obtaining Mail Contents;
S2, described mail server detect the email account of described Mail Clients request, obtain mailbox folder attribute, mail attribute, message body content and Email attachment content;
S3, described Mail Clients send the request of obtaining a certain mail to described mail server by IMAP agreement;
S4, described mail server are converted to picture by the attachment content of the mail of step S3 appointment, and the picture after conversion are inserted into the position of corresponding annex in mail;
Mail after S5, described mail server are processed step S4 is sent to described Mail Clients;
The mail that S6, described Mail Clients receipt mail server send, and the attachment content snapshot that presents the text of mail and be converted to picture for user in described Mail Clients.
As the improvement of such scheme, step S4 specifically comprises:
S41, described mail server are analyzed the annex of the mail of described client appointment, differentiate its file type;
S42, described mail server call corresponding parsing module according to the file type of described annex and decode, and the content of described annex is converted to picture format;
S43, described mail server are inserted into the annex of described picture format the position of corresponding annex in described mail.
As the improvement of such scheme, step S42 specifically comprises:
S421, described mail server are divided into text, image file, video file, executable file and unidentified file according to the file type of described annex by described annex;
S422, described mail server call the described annex that corresponding parsing module is text, image file, video file to type and decode;
S423, described mail server call interception module by decoded described annex according to the snapshot of annex described in certain interval acquiring;
S424, described mail server call image generating module by described snapshot generating pictures and sequentially sort according to the intercepting of described snapshot;
S425, described mail server call the described annex that executable file analysis module is executable file to type and analyze, and generate the executable file information snap picture that comprises version information, abbreviated functional description.
As the improvement of such scheme, step S5 specifically comprises:
The mail that S51, described Mail Clients receipt mail server send, its content comprises message body, described attachment content snapshot, the hyperlink of described annex;
S52, described Mail Clients answer message body and described attachment content snapshot described in position display at its interface phase, and in the relevant position of described Mail Contents snapshot, show the hyperlink of annex, for user, download described annex.
Correspondingly, the embodiment of the present invention also provides a kind of mail based on IMAP agreement automatic prebrowsing system, comprises Mail Clients, mail server and is located at the Mail Preview server in described mail server; Described Mail Clients comprises:
Mail acquisition module, for being set up and communicate by letter with described mail server by IMAP agreement, and safeguards the mail account on mail server, obtains the mail in the mail account on described mail server;
Mail display module, for showing body matter, attachment content snapshot and the attachment hyperlinks of the mail receiving from described mail server;
Described mail server comprises:
Communication module, for connecting by IMAP agreement and described Mail Clients, and responds the operational order of described Mail Clients, returns to the mail of its request to described Mail Clients;
Email storage module, for storing the mail of user account;
Mail treatment module, for the email account of described Mail Clients request is detected, obtain mailbox folder attribute, mail attribute, message body content and Email attachment content, from described email storage module, obtain the mail of described Mail Clients request, and the described mail extracting is sent to Mail Preview server processes, the mail through described mail Mail Preview server process is back to described Mail Clients through described communication module;
Described Mail Preview server is for carrying out file type identification to the annex of described mail, and call corresponding document analysis module and decode, the content of described annex is converted to picture format, and the annex of described picture format is inserted into the position of corresponding annex in described mail.
As the improvement of such scheme, described Mail Preview server comprises:
Mail Contents analysis module, for the annex of the mail of described client appointment is analyzed, differentiates its file type;
Annex parsing module, decodes for the file type according to described annex, and the content of described annex is converted to picture format;
Mail Contents integrate module, for being inserted into the annex of described picture format the position of the corresponding annex of described mail.
As the improvement of such scheme, described mail parsing module comprises:
Annex classifying module, for being divided into text, image file, video file, executable file and unidentified file according to the file type of described annex by described annex;
Annex decoder module, for being that the described annex of text, image file, video file is decoded to type;
Annex interception module, for by decoded described annex according to the snapshot of annex described in certain interval acquiring;
Annex image generating module, for by described snapshot generating pictures and sequentially sort according to the intercepting of described snapshot;
Executable file analysis module, analyzes for the described annex that is executable file to type, generates the executable file information snap picture that comprises version information, abbreviated functional description.
As the improvement of such scheme, described mail display module comprises:
Text display module, for showing the body matter of the mail receiving from described mail server;
Annex display module, it comprises attachment content preview interface and annex download interface, described attachment content preview interface is for showing the attachment content snapshot of the mail receiving from described mail server, and described annex is downloaded interface and is used for showing attachment hyperlinks, for user, clicks download.
Implement the embodiment of the present invention, there is following beneficial effect: the automatic method for previewing of Email attachment and system that the embodiment of the present invention provides, mail server is decoded the attachment content of mail convert picture format to, reinsert again in former mail, user does not need to download annex and gets final product preview attachment content, and be completely free of the restriction of browser, adapt to the requirement of various mobile terminal mail transmission/receptions and preview.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of automatic method for previewing of Email attachment based on IMAP agreement of the present invention;
Fig. 2 is the general structure schematic diagram of a kind of automatic prebrowsing system of Email attachment based on IMAP agreement of the present invention;
Fig. 3 is the another structural representation of a kind of automatic prebrowsing system of Email attachment based on IMAP agreement of the present invention;
Fig. 4 is the annex parsing module structural representation of a kind of automatic prebrowsing system of Email attachment based on IMAP agreement of the present invention;
Fig. 5 is the mail display module structural representation of a kind of automatic prebrowsing system of Email attachment based on IMAP agreement of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
In conjunction with Fig. 1, the flow chart of a kind of automatic method for previewing of Email attachment based on IMAP agreement that first embodiment of the invention provides, the method comprises:
S1, Mail Clients are communicated by letter with mail server by IMAP agreement, obtain the mandate of access respective mail account, and send the instruction of obtaining Mail Contents;
S2, described mail server detect the email account of described Mail Clients request, obtain mailbox folder attribute, mail attribute, message body content and Email attachment content;
S3, described Mail Clients send the request of obtaining a certain mail to described mail server by IMAP agreement;
S4, described mail server are converted to picture by the attachment content of the mail of step S3 appointment, and the picture after conversion are inserted into the position of corresponding annex in mail;
Mail after S5, described mail server are processed step S4 is sent to described Mail Clients;
The mail that S6, described Mail Clients receipt mail server send, and the attachment content snapshot that presents the text of mail and be converted to picture for user in described Mail Clients.
Step S4 specifically comprises:
S41, described mail server are analyzed the annex of the mail of described client appointment, differentiate its file type;
S42, described mail server call corresponding parsing module according to the file type of described annex and decode, and the content of described annex is converted to picture format;
S43, described mail server are inserted into the annex of described picture format the position of corresponding annex in described mail.
Step S42 specifically comprises:
S421, described mail server are divided into text, image file, video file, executable file and unidentified file according to the file type of described annex by described annex;
S422, described mail server call the described annex that corresponding parsing module is text, image file, video file to type and decode;
S423, described mail server call interception module by decoded described annex according to the snapshot of annex described in certain interval acquiring;
Wherein, intercepting interval needs common decision by type of attachment, size and program, as texts such as word, intercepts its homepage, endpage and intermediate page and generates 3 preview pictures; Video file equidistantly intercepts 3-5 according to the time shaft of video file and opens preview picture, if video length is longer, the number of pictures of intercepting is corresponding increase also.
S424, described mail server call image generating module by described snapshot generating pictures and sequentially sort according to the intercepting of described snapshot;
S425, described mail server call the described annex that executable file analysis module is executable file to type and analyze, and generate the executable file information snap picture that comprises version information, abbreviated functional description.
Wherein, described mail server can also be introduced antivirus software executable file is scanned, and increases the security information of this file in executable file information snap picture.For Unidentified file, described mail server will not provide preview service.
Step S5 specifically comprises:
The mail that S51, described Mail Clients receipt mail server send, its content comprises message body, described attachment content snapshot, the hyperlink of described annex;
S52, described Mail Clients answer message body and described attachment content snapshot described in position display at its interface phase, and in the relevant position of described Mail Contents snapshot, show the hyperlink of annex, for user, download described annex.
The automatic method for previewing of Email attachment providing by first embodiment of the invention, mail server is decoded the attachment content of mail convert picture format to, reinsert again in former mail, user does not need to download annex and gets final product preview attachment content, and be completely free of the restriction of browser, adapt to the requirement of various mobile terminal mail transmission/receptions and preview.This method is not subject to the restriction of attachment files size, only by less network traffics and hardware resource, can know the content that represents annex.
Correspondingly, in conjunction with the general structure schematic diagram of a kind of automatic prebrowsing system of Email attachment based on IMAP agreement of Fig. 2 the present invention and the another structural representation of a kind of automatic prebrowsing system of Email attachment based on IMAP agreement of Fig. 3 the present invention.Second embodiment of the invention provides a kind of mail based on IMAP agreement automatic prebrowsing system, comprises Mail Clients 1, mail server 2 and is located at the Mail Preview server 3 in described mail server 2; Described Mail Clients 1 comprises:
Wherein, described mail display module 12 texts that needs are the most basic and image display functions, can be widely used the terminal loads such as computer, mobile phone and Digital Television with upper module.
Described mail server 2 comprises:
Described Mail Preview server 3 is for carrying out file type identification to the annex of described mail, and call corresponding document analysis module and decode, the content of described annex is converted to picture format, and the annex of described picture format is inserted into the position of corresponding annex in described mail.
Preferably, described Mail Preview server 3 comprises:
Mail Contents analysis module 24, for the annex of the mail of described client appointment is analyzed, differentiates its file type;
Mail Contents integrate module 26, for being inserted into the annex of described picture format the position of the corresponding annex of described mail.
Preferably, in conjunction with the annex parsing module structural representation of a kind of automatic prebrowsing system of Email attachment based on IMAP agreement of Fig. 4 the present invention,
Described annex parsing module 25 comprises:
Annex classifying module 251, for being divided into text, image file, video file, executable file and unidentified file according to the file type of described annex by described annex;
Annex image generating module 254, for by described snapshot generating pictures and sequentially sort according to the intercepting of described snapshot;
Executable file analysis module 255, analyzes for the described annex that is executable file to type, generates the executable file information snap picture that comprises version information, abbreviated functional description.
Preferably, in conjunction with the mail display module structural representation of a kind of automatic prebrowsing system of Email attachment based on IMAP agreement of Fig. 5 the present invention,
Described mail display module 12 comprises:
The automatic prebrowsing system of a kind of Email attachment based on IMAP agreement that uses the embodiment of the present invention to provide, can find new mail in time by the reception condition of 24 hours monitoring mails of client software, meets the requirement of business users to mail real-time.And its client can be arranged in the various terminals such as mobile phone, multimedia television or computer, especially adapt to popular now mobile terminal, described client software only need be supported IMAP agreement and text image Presentation Function, can realize mail transmission/reception and annex preview, user can understand the content of annex in time by preview picture, and only need lower hsrdware requirements and less network traffics and buffer time, greatly expanded mail applicable situation, promote user's experience, reduced the use threshold of mail transmission/reception and online reading function.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (8)
1. the automatic method for previewing of the Email attachment based on IMAP agreement, is characterized in that, comprising:
S1, Mail Clients are communicated by letter with mail server by IMAP agreement, obtain the mandate of access respective mail account, and send the instruction of obtaining Mail Contents;
S2, described mail server detect the email account of described Mail Clients request, obtain mailbox folder attribute, mail attribute, message body content and Email attachment content;
S3, described Mail Clients send the request of obtaining a certain mail to described mail server by IMAP agreement;
S4, described mail server are converted to picture by the attachment content of the mail of step S3 appointment, and the picture after conversion are inserted into the position of corresponding annex in mail;
Mail after S5, described mail server are processed step S4 is sent to described Mail Clients;
The mail that S6, described Mail Clients receipt mail server send, and the attachment content snapshot that presents the text of mail and be converted to picture for user in described Mail Clients.
2. the automatic method for previewing of mail as claimed in claim 1, is characterized in that, step S4 specifically comprises:
S41, described mail server are analyzed the annex of the mail of described client appointment, differentiate its file type;
S42, described mail server call corresponding parsing module according to the file type of described annex and decode, and the content of described annex is converted to picture format;
S43, described mail server are inserted into the annex of described picture format the position of corresponding annex in described mail.
3. the automatic method for previewing of mail as claimed in claim 2, is characterized in that, step S42 specifically comprises:
S421, described mail server are divided into text, image file, video file, executable file and unidentified file according to the file type of described annex by described annex;
S422, described mail server call the described annex that corresponding parsing module is text, image file, video file to type and decode;
S423, described mail server call interception module by decoded described annex according to the snapshot of annex described in certain interval acquiring;
S424, described mail server call image generating module by described snapshot generating pictures and sequentially sort according to the intercepting of described snapshot;
S425, described mail server call the described annex that executable file analysis module is executable file to type and analyze, and generate the executable file information snap picture that comprises version information, abbreviated functional description.
4. the automatic method for previewing of mail as claimed in claim 1, is characterized in that, step S5 specifically comprises:
The mail that S51, described Mail Clients receipt mail server send, its content comprises message body, described attachment content snapshot, the hyperlink of described annex;
S52, described Mail Clients answer message body and described attachment content snapshot described in position display at its interface phase, and in the relevant position of described Mail Contents snapshot, show the hyperlink of annex, for user, download described annex.
5. the automatic prebrowsing system of the mail based on IMAP agreement, is characterized in that, comprises Mail Clients, mail server and is located at the Mail Preview server in described mail server; Described Mail Clients comprises:
Mail acquisition module, for being set up and communicate by letter with described mail server by IMAP agreement, and safeguards the mail account on mail server, obtains the mail in the mail account on described mail server;
Mail display module, for showing body matter, attachment content snapshot and the attachment hyperlinks of the mail receiving from described mail server;
Described mail server comprises:
Communication module, for connecting by IMAP agreement and described Mail Clients, and responds the operational order of described Mail Clients, returns to the mail of its request to described Mail Clients;
Email storage module, for storing the mail of user account;
Mail treatment module, for the email account of described Mail Clients request is detected, obtain mailbox folder attribute, mail attribute, message body content and Email attachment content, from described email storage module, obtain the mail of described Mail Clients request, and the described mail extracting is sent to Mail Preview server processes, the mail through described mail Mail Preview server process is back to described Mail Clients through described communication module;
Described Mail Preview server is for carrying out file type identification to the annex of described mail, and call corresponding document analysis module and decode, the content of described annex is converted to picture format, and the annex of described picture format is inserted into the position of corresponding annex in described mail.
6. the automatic prebrowsing system of mail as claimed in claim 5, is characterized in that, described Mail Preview server comprises:
Mail Contents analysis module, for the annex of the mail of described client appointment is analyzed, differentiates its file type;
Annex parsing module, decodes for the file type according to described annex, and the content of described annex is converted to picture format;
Mail Contents integrate module, for being inserted into the annex of described picture format the position of the corresponding annex of described mail.
7. the automatic prebrowsing system of mail as claimed in claim 5, is characterized in that, described mail parsing module comprises:
Annex classifying module, for being divided into text, image file, video file, executable file and unidentified file according to the file type of described annex by described annex;
Annex decoder module, for being that the described annex of text, image file, video file is decoded to type;
Annex interception module, for by decoded described annex according to the snapshot of annex described in certain interval acquiring;
Annex image generating module, for by described snapshot generating pictures and sequentially sort according to the intercepting of described snapshot;
Executable file analysis module, analyzes for the described annex that is executable file to type, generates the executable file information snap picture that comprises version information, abbreviated functional description.
8. the automatic prebrowsing system of mail as claimed in claim 5, is characterized in that, described mail display module comprises:
Text display module, for showing the body matter of the mail receiving from described mail server;
Annex display module, it comprises attachment content preview interface and annex download interface, described attachment content preview interface is for showing the attachment content snapshot of the mail receiving from described mail server, and described annex is downloaded interface and is used for showing attachment hyperlinks, for user, clicks download.
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CN201310394258.XA CN103516592B (en) | 2013-09-03 | 2013-09-03 | A kind of automatic method for previewing of Email attachment based on IMAP protocol and system |
PCT/CN2013/086171 WO2015032122A1 (en) | 2013-09-03 | 2013-10-29 | Method and system for automatically previewing mail attachment based on imap protocol |
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